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Электронный компонент: LM4041D12ILP

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www.ti.com
FEATURES
Adjustable . . . DBZ (SOT-23) PACKAGE
(TOP VIEW)
FB
CATHODE
ANODE
Adjustable . . . DCK (SC-70) PACKAGE
(TOP VIEW)
NC
NC
1
2
3
1
2
3
5
4
FB
CATHODE
ANODE
Adjustable . . . LP (TO-92/TO-226) PACKAGE
(TOP VIEW)
NC - No internal connection
1.2 V . . . DBZ (SOT-23) PACKAGE
(TOP VIEW)
CATHODE
ANODE
*
1.2 V . . . DCK (SC-70) PACKAGE
(TOP VIEW)
ANODE
NC
1
2
3
1
2
3
5
4
NC
CATHODE
ANODE
1.2 V . . . LP (TO-92/TO-226) PACKAGE
(TOP VIEW)
NC - No internal connection
* Pin 2 must be connected to
ANODE or left open.
* Pin 3 must be connected to
ANODE or left open.
NC - No internal connection
FB
ANODE
CATHODE
NC
CATHODE
*
DESCRIPTION/ORDERING INFORMATION
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
Applications
1.225-V Fixed and Adjustable Outputs
Data-Acquisition Systems
(1.225 V to 10 V)
Power Supplies and Power-Supply Monitors
Tight Output Tolerances and Low
Instrumentation and Test Equipment
Temperature Coefficient
Process Control
Max 0.1%, 100 ppm/
C A Grade
Precision Audio
Max 0.2%, 100 ppm/
C B Grade
Automotive Electronics
Max 0.5%, 100 ppm/
C C Grade
Energy Management/Metering
Max 1.0%, 150 ppm/
C D Grade
Battery-Powered Equipment
Low Output Noise . . . 20
V
RMS
(Typ)
Wide Operating Current Range . . .
45
A (Typ) to 12 mA
Stable With All Capacitive Loads; No Output
Capacitor Required
Available in
Industrial Temperature: 40
C to 85
C
Extended Temperature: 40
C to 125
C
The LM4041 series of shunt voltage references are versatile, easy-to-use references suitable for a wide array of
applications. They require no external capacitors for operation and are stable with all capacitive loads.
Additionally, the reference offers low dynamic impedance, low noise, and a low temperature coefficient to ensure
a stable output voltage over a wide range of operating currents and temperatures. The LM4041 uses fuse and
Zener-zap reverse breakdown voltage trim during wafer sort to offer four output voltage tolerances, ranging from
0.1% (max) for the A grade to 1% (max) for the D grade. Thus, a great deal of flexibility is offered to designers in
choosing the best cost-to-performance ratio for their applications. The LM4041 is available in a fixed (1.225 V
nominal) or an adjustable version (which requires an external resistor divider to set the output to a value between
1.225 V and 10 V).
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright 2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
www.ti.com
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
Packaged in space-saving SC-70 and SOT-23-3 and requiring a minimum current of 45
A (typ), the LM4041
also is ideal for portable applications. The TO-92 package also is available for through-hole packaging needs.
The LM4041xI is characterized for operation over an ambient temperature range of 40
C to 85
C. The
LM4041xQ is characterized for operation over an ambient temperature range of 40
C to 125
C.
ORDERING INFORMATION
ORDERABLE
TOP-SIDE
T
A
DEVICE GRADE
V
Z
PACKAGE
(1)
PART NUMBER
MARKING
(2)
A grade:
SC-70 (DCK)
Reel of 3000
LM4041A12IDCKR
MK_
0.1% initial
Reel of 3000
LM4041A12IDBZR
accuracy
SOT-23-3 (DBZ)
4MK_
Reel of 250
LM4041A12IDBZT
and
1.2 V
100 ppm/
C
Bulk of 1000
LM4041A12ILP
temperature
TO-92/TO-226 (LP)
PREVIEW
Reel of 2000
LM4041A12ILPR
coefficient
Reel of 3000
LM4041BIDCKR
SC-70 (DCK)
MG_
Reel of 250
LM4041BIDCKT
Reel of 3000
LM4041BIDBZR
ADJ
SOT-23-3 (DBZ)
4MG_
B grade:
Reel of 250
LM4041BIDBZT
0.2% initial
Bulk of 1000
LM4041BILP
accuracy
TO-92/TO-226 (LP)
PREVIEW
and
Reel of 2000
LM4041BILPR
100 ppm/
C
SC-70 (DCK)
Reel of 3000
LM4041B12IDCKR
ML_
temperature
Reel of 3000
LM4041B12IDBZR
coefficient
SOT-23-3 (DBZ)
4ML_
1.2 V
Reel of 250
LM4041B12IDBZT
Bulk of 1000
LM4041B12ILP
TO-92/TO-226 (LP)
PREVIEW
Reel of 2000
LM4041B12ILPR
Reel of 3000
LM4041CIDCKR
SC-70 (DCK)
MH_
Reel of 250
LM4041CIDCKT
Reel of 3000
LM4041CIDBZR
40
C to 85
C
ADJ
SOT-23-3 (DBZ)
4MH_
C grade:
Reel of 250
LM4041CIDBZT
0.5% initial
Bulk of 1000
LM4041CILP
accuracy
TO-92/TO-226 (LP)
PREVIEW
and
Reel of 2000
LM4041CILPR
100 ppm/
C
SC-70 (DCK)
Reel of 3000
LM4041C12IDCKR
MM_
temperature
Reel of 3000
LM4041C12IDBZR
coefficient
SOT-23-3 (DBZ)
4MM_
1.2 V
Reel of 250
LM4041C12IDBZT
Bulk of 1000
LM4041C12ILP
TO-92/TO-226 (LP)
PREVIEW
Reel of 2000
LM4041C12ILPR
Reel of 3000
LM4041DIDCKR
SC-70 (DCK)
MJ_
Reel of 250
LM4041DIDCKT
Reel of 3000
LM4041DIDBZR
ADJ
SOT-23-3 (DBZ)
4MJ_
D grade:
Reel of 250
LM4041DIDBZT
1.0% initial
Bulk of 1000
LM4041DILP
accuracy
TO-92/TO-226 (LP)
PREVIEW
and
Reel of 2000
LM4041DILPR
150 ppm/
C
SC-70 (DCK)
Reel of 3000
LM4041D12IDCKR
MN_
temperature
Reel of 3000
LM4041D12IDBZR
coefficient
SOT-23-3 (DBZ)
4MN_
1.2 V
Reel of 250
LM4041D12IDBZT
Bulk of 1000
LM4041D12ILP
TO-92/TO-226 (LP)
PREVIEW
Reel of 2000
LM4041D12ILPR
(1)
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
(2)
DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
2
www.ti.com
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
ORDERING INFORMATION
ORDERABLE
TOP-SIDE
T
A
DEVICE GRADE
V
Z
PACKAGE
(1)
PART NUMBER
MARKING
(2)
C grade:
Reel of 3000
LM4041CQDBZR
ADJ
SOT-23-3 (DBZ)
4MP_
0.5% initial
Reel of 250
LM4041CQDBZT
accuracy
Reel of 3000
LM4041C12QDBZR
and
100 ppm/
C
1.2 V
SOT-23-3 (DBZ)
4MS_
temperature
Reel of 250
LM4041C12QDBZT
coefficient
40
C to 125
C
D grade:
Reel of 3000
LM4041DQDBZR
ADJ
SOT-23-3 (DBZ)
4MR_
1.0% initial
Reel of 250
LM4041DQDBZT
accuracy
Reel of 3000
LM4041D12QDBZR
and
150 ppm/
C
1.2 V
SOT-23-3 (DBZ)
4MT_
temperature
Reel of 250
LM4041D12QDBZT
coefficient
(1)
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
(2)
DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
3
www.ti.com
CATHODE
ANODE
_
+
FB
(1)
(1) LM4041x (ADJ) only
(2) LM4041x12 only
V
REF
(1)
(2)
(2)
Absolute Maximum Ratings
(1)
Recommended Operating Conditions
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
FUNCTIONAL BLOCK DIAGRAM
over free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
V
Z
Continuous cathode voltage
15
V
I
Z
Continuous cathode current
10
25
mA
DBZ package
206
JA
Package thermal impedance
(2) (3)
DCK package
252
C/W
LP package
156
T
J
Operating virtual junction temperature
150
C
T
stg
Storage temperature range
65
150
C
(1)
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)
Maximum power dissipation is a function of T
J
(max),
JA
, and T
A
. The maximum allowable power dissipation at any allowable ambient
temperature is P
D
= (T
J
(max) T
A
)/
JA
. Operating at the absolute maximum T
J
of 150
C can affect reliability.
(3)
The package thermal impedance is calculated in accordance with JESD 51-7.
MIN
MAX
UNIT
I
Z
Cathode current
(1)
12
mA
V
Z
Reverse breakdown voltage (adjustable version)
10
V
LM4041 (I temperature)
40
85
T
A
Free-air temperature
C
LM4041 (Q temperature)
40
125
(1)
See parametric tables
4
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LM4041x12I Electrical Characteristics
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
full-range T
A
= 40
C to 85
C (unless otherwise noted)
LM4041A12I
LM4041B12I
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
Reverse breakdown
V
Z
I
Z
= 100
A
25
C
1.225
1.225
V
voltage
25
C
1.2
1.2
2.4
2.4
Reverse breakdown
I
Z
= 100
A
mV
voltage tolerance
Full range
9.2
9.2
10.4
10.4
25
C
45
75
45
75
Minimum cathode
I
Z,min
A
current
Full range
80
80
I
Z
= 10 mA
25
C
20
20
Average temperature
25
C
15
15
VZ
coefficient of reverse
I
Z
= 1 mA
ppm/
C
Full range
100
100
breakdown voltage
I
Z
= 100
A
25
C
15
15
25
C
0.7
1.5
0.7
1.5
I
Z,min
< I
Z
< 1 mA
Reverse breakdown
Full range
2
2
V
Z
/
I
Z
voltage change with
mV
25
C
4
6
4
6
cathode current change
1 mA < I
Z
< 12 mA
Full range
8
8
Reverse dynamic
I
Z
= 1 mA, f = 120 Hz,
Z
Z
25
C
0.5
1.5
0.5
1.5
impedance
I
AC
= 0.1 I
Z
I
Z
= 100
A,
e
N
Wideband noise
25
C
20
20
V
RMS
10 Hz
f
10 kHz
Long-term stability of
t = 1000 h,
reverse breakdown
T
A
= 25
C
0.1
C,
25
C
120
120
ppm
voltage
I
Z
= 100
A
5
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LM4041x12I Electrical Characteristics
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
full-range T
A
= 40
C to 85
C (unless otherwise noted)
LM4041C12I
LM4041D12I
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
Reverse breakdown
V
Z
I
Z
= 100
A
25
C
1.225
1.225
V
voltage
25
C
6
6
12
12
Reverse breakdown
I
Z
= 100
A
mV
voltage tolerance
Full range
14
14
24
24
25
C
45
75
45
75
Minimum cathode
I
Z,min
A
current
Full range
80
80
I
Z
= 10 mA
25
C
20
20
Average temperature
25
C
15
15
VZ
coefficient of reverse
I
Z
= 1 mA
ppm/
C
Full range
100
150
breakdown voltage
I
Z
= 100
A
25
C
15
15
25
C
0.7
1.5
0.7
2
I
Z,min
< I
Z
< 1 mA
Reverse breakdown
Full range
2
2.5
V
Z
/
I
Z
voltage change with
mV
25
C
2.5
6
2.5
8
cathode current change
1 mA < I
Z
< 12 mA
Full range
8
10
Reverse dynamic
I
Z
= 1 mA, f = 120 Hz,
Z
Z
25
C
0.5
1.5
0.5
2
impedance
I
AC
= 0.1 I
Z
I
Z
= 100
A,
e
N
Wideband noise
25
C
20
20
V
RMS
10 Hz
f
10 kHz
Long-term stability of
t = 1000 h,
reverse breakdown
T
A
= 25
C
0.1
C,
25
C
120
120
ppm
voltage
I
Z
= 100
A
6
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LM4041x12Q Electrical Characteristics
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
full-range T
A
= 40
C to 125
C (unless otherwise noted)
LM4041C12Q
LM4041D12Q
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
Reverse breakdown
V
Z
I
Z
= 100
A
25
C
1.225
1.225
V
voltage
25
C
6
6
12
12
Reverse breakdown
I
Z
= 100
A
mV
voltage tolerance
Full range
18.4
18.4
31
31
25
C
45
75
45
75
Minimum cathode
I
Z,min
A
current
Full range
80
80
I
Z
= 10 mA
25
C
20
20
Average temperature
25
C
15
15
VZ
coefficient of reverse
I
Z
= 1 mA
ppm/
C
Full range
100
150
breakdown voltage
I
Z
= 100
A
25
C
15
15
25
C
0.7
1.5
0.7
2
I
Z,min
< I
Z
< 1 mA
Reverse breakdown
Full range
2
2.5
V
Z
/
I
Z
voltage change with
mV
25
C
2.5
6
2.5
8
cathode current change
1 mA < I
Z
< 12 mA
Full range
8
10
25
C
0.5
0.5
Reverse dynamic
I
Z
= 1 mA, f = 120 Hz,
Z
Z
impedance
I
AC
= 0.1 I
Z
Full range
1.5
2
I
Z
= 100
A,
e
N
Wideband noise
25
C
20
20
V
RMS
10 Hz
f
10 kHz
Long-term stability of
t = 1000 h,
reverse breakdown
T
A
= 25
C
0.1
C,
25
C
120
120
ppm
voltage
I
Z
= 100
A
7
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LM4041xI (Adjustable Version) Electrical Characteristics
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
full-range T
A
= 40
C to 85
C (unless otherwise noted)
LM4041BI
LM4041CI
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
V
REF
Reference voltage
I
Z
= 100
A, V
Z
= 5 V
25
C
1.233
1.233
V
25
C
2.5
2.5
6.2
6.2
Reference voltage
I
Z
= 100
A, V
Z
= 5 V
mV
tolerance
(1)
Full range
10.5
10.5
14
14
25
C
45
75
45
75
Minimum cathode
I
Z,min
A
current
Full range
80
80
25
C
0.7
1.5
0.7
1.5
I
Z,min
< I
Z
< 1 mA
Reference voltage
Full range
2
2
V
REF
/
I
Z
change with cathode
mV
25
C
2
4
2
4
current change
1 mA < I
Z
< 12 mA
Full range
6
6
Reference voltage
25
C
1.55
2
1.55
2
V
REF
/
V
KA
change with output
I
Z
= 1 mA
mV/V
Full range
2.5
2.5
voltage change
25
C
60
100
60
100
I
FB
Feedback current
nA
Full range
120
120
I
Z
= 10 mA, V
Z
= 5 V
25
C
20
20
Average temperature
25
C
15
15
V
REF
coefficient of
I
Z
= 1 mA, V
Z
= 5 V
ppm/
C
Full range
100
100
reference voltage
(1)
I
Z
= 100
A, V
Z
= 5 V
25
C
15
15
I
Z
= 1 mA, f = 120 Hz,
25
C
0.3
0.3
I
AC
= 0.1 I
Z
, V
Z
= V
REF
Reverse dynamic
Z
Z
impedance
I
Z
= 1 mA, f = 120 Hz,
25
C
2
2
I
AC
= 0.1 I
Z
, V
Z
= 10 V
I
Z
= 100
A, V
Z
= V
REF
,
e
N
Wideband noise
25
C
20
20
V
RMS
10 Hz
f
10 kHz
Long-term stability of
t = 1000 h,
reverse breakdown
T
A
= 25
C
0.1
C,
25
C
120
120
ppm
voltage
I
Z
= 100
A
(1)
Reference voltage tolerance and average temperature coefficient change with output voltage (V
Z
). See Typical Characteristics.
8
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LM4041xI (Adjustable Version) Electrical Characteristics
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
full-range T
A
= 40
C to 85
C (unless otherwise noted)
LM4041DI
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
MAX
V
REF
Reference voltage
I
Z
= 100
A, V
Z
= 5 V
25
C
1.233
V
25
C
12
12
Reference voltage tolerance
(1)
I
Z
= 100
A, V
Z
= 5 V
mV
Full range
24
24
25
C
45
75
I
Z,min
Minimum cathode current
A
Full range
80
25
C
0.7
2
I
Z,min
< I
Z
< 1 mA
Full range
2.5
Reference voltage change
V
REF
/
I
Z
mV
with cathode current change
25
C
2
6
1 mA < I
Z
< 12 mA
Full range
8
25
C
1.55
2
Reference voltage change
V
REF
/
V
KA
I
Z
= 1 mA
mV/V
with output voltage change
Full range
3
25
C
60
150
I
FB
Feedback current
nA
Full range
200
I
Z
= 10 mA, V
Z
= 5 V
25
C
20
25
C
15
Average temperature coefficient
V
REF
I
Z
= 1 mA, V
Z
= 5 V
ppm/
C
of reference voltage
(1)
Full range
150
I
Z
= 100
A, V
Z
= 5 V
25
C
15
I
Z
= 1 mA, f = 120 Hz,
25
C
0.3
I
AC
= 0.1 I
Z
, V
Z
= V
REF
Z
Z
Reverse dynamic impedance
I
Z
= 1 mA, f = 120 Hz,
25
C
2
I
AC
= 0.1 I
Z
, V
Z
= 10 V
I
Z
= 100
A, V
Z
= V
REF
,
e
N
Wideband noise
25
C
20
V
RMS
10 Hz
f
10 kHz
t = 1000 h,
Long-term stability
T
A
= 25
C
0.1
C,
25
C
120
ppm
of reverse breakdown voltage
I
Z
= 100
A
(1)
Reference voltage tolerance and average temperature coefficient change with output voltage (V
Z
). See Typical Characteristics.
9
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LM4041xQ (Adjustable Version) Electrical Characteristics
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
full-range T
A
= 40
C to 125
C (unless otherwise noted)
LM4041CQ
LM4041DQ
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
V
REF
Reference voltage
I
Z
= 100
A, V
Z
= 5 V
25
C
1.233
1.233
V
25
C
6.2
6.2
12
12
Reference voltage
I
Z
= 100
A, V
Z
= 5 V
mV
tolerance
(1)
Full range
18
18
30
30
25
C
45
75
45
75
Minimum cathode
I
Z,min
A
current
Full range
80
80
25
C
0.7
1.5
0.7
2
I
Z,min
< I
Z
< 1 mA
Reference voltage
Full range
2
2.5
V
REF
/
I
Z
change with cathode
mV
25
C
2
4
2
6
current change
1 mA < I
Z
< 12 mA
Full range
8
10
Reference voltage
25
C
1.55
2
1.55
2.5
V
REF
/
V
KA
change with output
I
Z
= 1 mA
mV/V
Full range
3
4
voltage change
25
C
60
100
60
150
I
FB
Feedback current
nA
Full range
120
200
I
Z
= 10 mA, V
Z
= 5 V
25
C
20
20
Average temperature
25
C
15
15
V
REF
coefficient of
I
Z
= 1 mA, V
Z
= 5 V
ppm/
C
Full range
100
150
reference voltage
(1)
I
Z
= 100
A, V
Z
= 5 V
25
C
15
15
I
Z
= 1 mA, f = 120 Hz,
25
C
0.3
0.3
I
AC
= 0.1 I
Z
, V
Z
= V
REF
Reverse dynamic
Z
Z
impedance
I
Z
= 1 mA, f = 120 Hz,
25
C
2
2
I
AC
= 0.1 I
Z
, V
Z
= 10 V
I
Z
= 100
A, V
Z
= V
REF
,
e
N
Wideband noise
25
C
20
20
V
RMS
10 Hz
f
10 kHz
Long-term stability of
t = 1000 h,
reverse breakdown
T
A
= 25
C
0.1
C,
25
C
120
120
ppm
voltage
I
Z
= 100
A
(1)
Reference voltage tolerance and average temperature coefficient change with output voltage (V
Z
). See Typical Characteristics.
10
www.ti.com
TYPICAL CHARACTERISTICS
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-40
Temperature (
/
C)
Reference Voltage (V)
I
Z
= 150
D
A
V
REF
= 1.2 V
-9.9 ppm/
/
C
2.7 ppm/
/
C
21 ppm/
/
C
-20
0
20
40
60
80
100
0
200
400
600
800
1000
Frequency (Hz)
Noise V
oltage (nV/
/
Hz
)
1
10
100
1k
10k
-0.5
0
0.5
1
1.5
2
2.5
3
-2
Time (
D
s)
-20
-15
-10
-5
0
5
10
15
V
IN
(V)
V
Z
V
IN
2
6
10
14
18
22
26
V
Z
(V)
1.2305
1.231
1.2315
1.232
1.2325
1.233
1.2335
1.234
1.2345
1.235
Reverse (Output) Voltage (V)
Reference Voltage (V)
0
2
4
6
8
10
LM4041 (Adj)
I
Z
= 1 mA
125
/
C
85
/
C
-40
/
C
25
/
C
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
Figure 1. Temperature Drift for Different Average
Figure 2. Noise Voltage vs Frequency
Temperature Coefficients
<br/>
Figure 3. Start-Up Characteristics
Figure 4. Reference Voltage vs Reverse (Output) Voltage
<br/>
(for Different Temperatures)
11
www.ti.com
TYPICAL CHARACTERISTICS
1.2305
1.231
1.2315
1.232
1.2325
1.233
1.2335
1.234
1.2345
1.235
Temperature (
/
C)
Reference Voltage (V)
-40
-20
0
20
40
60
80
100
LM4041 (Adj)
I
Z
= 1 mA
V
REF
5 V
10 V
0
10
20
30
40
50
60
70
80
90
100
Reverse (Output) Voltage (V)
Feedback Current (nA)
LM4041 (Adj)
I
Z
= 1 mA
0
2
4
6
8
10
125
/
C
85
/
C
25
/
C
-40
/
C
0.1
1
10
100
1000
Frequency (Hz)
1k
100
10k
100k
1M
Impedance (
W
)
LM4041 (Adj)
I
Z
= 1 mA
D
I
Z
= 0.1 I
Z
T
j
= 25
/
C
C
L
= 1 F
C
L
= 0 F
Capacitor
Line
1.23 V
2.5 V
5 V
10 V
0.1
1
10
100
1000
LM4041 (Adj)
I
Z
= 150
W
A
D
I
Z
= 0.1 I
Z
T
j
= 25
C
1k
100
10k
100k
1M
Frequency (Hz)
Impedance (
)
C
L
= 1
W
F
C
L
= 0
W
F
Capacitor
Line
1.23 V
2.5 V
5 V
10 V
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
Figure 5. Reference Voltage vs Temperature
Figure 6. Feedback Current vs Reverse (Output) Voltage
(for Different Reverse Voltages)
(for Different Temperatures)
Figure 7. Output Impedance vs Frequency
Figure 8. Output Impedance vs Frequency
12
www.ti.com
TYPICAL CHARACTERISTICS
0
10
20
30
40
50
60
70
80
90
100
Reverse (Output) Voltage (V)
Reverse Current (
D
A)
FB Steps (V)
(see Figure 12)
LM4041 (Adj)
I
Z
= 1 mA
0
1
2
3
4
5
6
7
8
9
10
0
2
4
6
8
0
10
20
30
40
50
60
70
80
90
100
Reverse (Output) Voltage (V)
Reverse Current (
D
A)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
LM4041 (Adj)
V
Z
= 1.23 V (nominal)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Output Current (mA)
Output Saturation (V)
LM4041 (Adj)
V
Adj
= V
REF
+ 5 mV
11
-40
/
C
25
/
C
85
/
C
125
/
C
12
1
0
2
3
4
5
6
7
8
9
10
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
Figure 9. Reverse Characteristics
Figure 10. Reverse Characteristics and Minumum
<br/>
Operating Current
Figure 11. Output Saturation vs Output Current
13
www.ti.com
APPLICATION INFORMATION
1-Hz rate
V
Z
LM4041-1.2
R
S
30 k
D
V
IN
I
R
(+)
(-)
V
2 V/step
LM4041 (Adj)
Output Capacitor
SOT-23 and SC-70 Pin Connections
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
Figure 12. Startup Characteristics Test Circuit
Figure 13. Reverse Characteristics Test Circuit
The LM4041 does not require an output capacitor across CATHODE and ANODE for stability. However, if an
output bypass capacitor is desired, the LM4041 is designed to be stable with all capacitive loads.
There is a parasitic Schottky diode connected between pins 2 and 3 of the SOT-23 packaged device. Thus, pin 3
of the SOT-23 package must be left floating or connected to pin 2. Similarly, pin 2 of the SC-70 package also
must be left floating or connected to pin 1.
14
www.ti.com
APPLICATION INFORMATION
Adjustable Version
R
S
LM4041
(Adjustable)
V
S
R1
R2
V
Z
= V
REF
*
1
)
R2
R1
+
+
V
REF
-
Cathode and Load Currents
R
S
+
V
S
*
V
Z
(I
L
)
I
Z
)
(1)
LM4041
I
Z
+ I
L
I
L
I
Z
V
S
V
Z
R
S
LM4041
PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
SLCS146D FEBRUARY 2005 REVISED DECEMBER 2005
The adjustable version allows V
Z
to be set by a user-defined resistor divider. The output voltage, V
Z
, is set
according to the equation shown in
Figure 14
.
Figure 14. Adjustable Shunt Regulator
In a typical shunt regulator configuration (see
Figure 15
), an external resistor, R
S
, is connected between the
supply and the cathode of the LM4041. R
S
must be set properly, as it sets the total current available to supply
the load (I
L
) and bias the LM4041 (I
Z
). In all cases, I
Z
must stay within a specified range for proper operation of
the reference. Taking into consideration one extreme in the variation of the load and supply voltage (maximum I
L
and minimum V
S
), R
S
must be small enough to supply the minimum I
Z
required for operation of the regulator, as
given by data sheet parameters. At the other extreme, maximum V
S
and minimum I
L
, R
S
must be large enough to
limit I
Z
to less than its maximum recommended rating of 12 mA.
R
S
is calculated as shown in
Equation 1
.
Figure 15. Shunt Regulator
15
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
(2)
Lead/Ball Finish
MSL Peak Temp
(3)
LM4041A12IDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12IDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12IDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12IDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12IDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12IDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041A12ILP
PREVIEW
TO-92
LP
3
1000
TBD
Call TI
Call TI
LM4041B12IDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12IDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12IDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12IDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12IDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12IDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041B12ILP
PREVIEW
TO-92
LP
3
1000
TBD
Call TI
Call TI
LM4041BIDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDCKT
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BIDCKTE4
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041BILP
PREVIEW
TO-92
LP
3
1000
TBD
Call TI
Call TI
LM4041BILPR
PREVIEW
TO-92
LP
3
2000
TBD
Call TI
Call TI
LM4041C12IDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12IDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12IDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
CU NIPDAU
Level-1-260C-UNLIM
PACKAGE OPTION ADDENDUM
www.ti.com
2-Dec-2005
Addendum-Page 1
Orderable Device
Status
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
(2)
Lead/Ball Finish
MSL Peak Temp
(3)
no Sb/Br)
LM4041C12IDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12IDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12IDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12ILP
PREVIEW
TO-92
LP
3
1000
TBD
Call TI
Call TI
LM4041C12QDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12QDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12QDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041C12QDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDCKT
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CIDCKTE4
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CILP
PREVIEW
TO-92
LP
3
1000
TBD
Call TI
Call TI
LM4041CILPR
PREVIEW
TO-92
LP
3
2000
TBD
Call TI
Call TI
LM4041CQDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CQDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CQDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041CQDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12IDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12IDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12IDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12IDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12IDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
CU NIPDAU
Level-1-260C-UNLIM
PACKAGE OPTION ADDENDUM
www.ti.com
2-Dec-2005
Addendum-Page 2
Orderable Device
Status
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
(2)
Lead/Ball Finish
MSL Peak Temp
(3)
no Sb/Br)
LM4041D12IDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12QDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12QDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12QDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041D12QDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDCKR
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDCKRE4
ACTIVE
SC70
DCK
5
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDCKT
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DIDCKTE4
ACTIVE
SC70
DCK
5
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DILP
PREVIEW
TO-92
LP
3
1000
TBD
Call TI
Call TI
LM4041DILPR
PREVIEW
TO-92
LP
3
2000
TBD
Call TI
Call TI
LM4041DQDBZR
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DQDBZRG4
ACTIVE
SOT-23
DBZ
3
3000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DQDBZT
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
LM4041DQDBZTG4
ACTIVE
SOT-23
DBZ
3
250
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco
Plan
-
The
planned
eco-friendly
classification:
Pb-Free
(RoHS)
or
Green
(RoHS
&
no
Sb/Br)
-
please
check
http://www.ti.com/productcontent
for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
PACKAGE OPTION ADDENDUM
www.ti.com
2-Dec-2005
Addendum-Page 3
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
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provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
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PACKAGE OPTION ADDENDUM
www.ti.com
2-Dec-2005
Addendum-Page 4
MECHANICAL DATA

MSOT002A OCTOBER 1994 REVISED NOVEMBER 2001
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
LP (O-PBCY-W3)
PLASTIC CYLINDRICAL PACKAGE
4040001-2 /C 10/01
STRAIGHT LEAD OPTION
0.016 (0,41)
0.014 (0,35)
0.157 (4,00) MAX
FORMED LEAD OPTION
0.104 (2,65)
0.210 (5,34)
0.170 (4,32)
0.050 (1,27)
0.016 (0,41)
0.022 (0,56)
0.500 (12,70) MIN
Seating
Plane
0.175 (4,44)
0.205 (5,21)
0.165 (4,19)
0.125 (3,17)
DIA
D
C
0.105 (2,67)
0.095 (2,41)
0.135 (3,43) MIN
0.080 (2,03)
0.055 (1,40)
0.045 (1,14)
1
0.105 (2,67)
2
3
0.080 (2,03)
0.105 (2,67)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Lead dimensions are not controlled within this area
D. FAlls within JEDEC TO -226 Variation AA (TO-226 replaces TO-92)
E. Shipping Method:
Straight lead option available in bulk pack only.
Formed lead option available in tape & reel or ammo pack.
MECHANICAL DATA

MSOT002A OCTOBER 1994 REVISED NOVEMBER 2001
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
LP (O-PBCY-W3)
PLASTIC CYLINDRICAL PACKAGE
4040001-3 /C 10/01
0.094 (2,40)
0.114 (2,90)
0.460 (11,70)
0.539 (13,70)
TAPE & REEL
0.335 (8,50)
0.384 (9,75)
0.020 (0,50) MIN
0.217 (5,50)
0.748 (19,00)
0.748 (19,00)
0.689 (17,50)
0.098 (2,50)
0.433 (11,00)
0.335 (8,50)
0.610 (15,50)
0.650 (16,50)
1.260 (32,00)
0.905 (23,00)
0.234 (5,95)
0.266 (6,75)
0.512 (13,00)
0.488 (12,40)
0.114 (2,90)
0.094 (2,40)
0.146 (3,70)
0.169 (4,30)
DIA
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Tape and Reel information for the Format Lead Option package.
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