Micropower
Voltage Reference Diode
CLM285-2.5 / CLM385-2.5
FEATURES
Operating Current . . . . . . . . . . . . . . . . . . . 20
A - 20mA
Dynamic Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Low Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . 2.5V
PRODUCT DESCRIPTION
The CLM285 / 385 - 2.5 are 2 terminal band-gap voltage
regulator diodes. Operating over a 20
A to 20mA current range.
The devices provide good temperature stability and exceptionally
low dynamic impedance. Designed for applications in portable
meters, regulators or general purpose circuitry.
ORDERING INFORMATION
Part
Package Max Tempco (ppm) Temp Range
CLM285Y2
SOIC
100
-40
o
C to +85
o
C
CLM385T2
TO-46
100
0
o
C to +70
o
C
CLM385N2
TO-92
100
0
o
C to +70
o
C
CLM385Y2
SOIC
100
0
o
C to +70
o
C
PIN CONFIGURATIONS
CORPORATION
TO-92
TO-92 (N-SUFFIX)
BOTTOM VIEW
1
2
3
8
7
6
5
1
2
3
4
NC
NC
NC
+
NC
NC
-
NC
SO PACKAGE
(Y-SUFFIX)
BOTTOM VIEW
SO-8
ABSOLUTE MAXIMUM RATINGS (Note 1)
Reverse Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
Forward Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Operating Temperature Range (Note 3)
CLM185-2.5 . . . . . . . . . . . . . . . . . . . . . . . -55
o
C to +125
o
C
CLM285-2.5 . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to +85
o
C
CLM385-2.5 . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to +70
o
C
Storage Temperature . . . . . . . . . . . . . . . . . . -55
o
C to +150
o
C
Soldering Information
TO-92 Package (10 sec.). . . . . . . . . . . . . . . . . . . . . 260
o
C
TO-46 Package (10 sec.). . . . . . . . . . . . . . . . . . . . . 300
o
C
SO Package: Vapor Phase (60 sec.) . . . . . . . . . . 215
o
C
Infrared (15 sec.) . . . . . . . . . . . . . . 220
o
C
ELECTRICAL CHARACTERISTICS (Continued) (Note 3)
PARAMETER
TYP
CLM285-2.5
CLM385-2.5
UNITS
(LIMITS)
CONDITIONS
TESTED
LIMIT
(NOTE 4)
DESIGN
LIMIT
(NOTE 5)
TESTED
LIMIT
(NOTE 4)
DESIGN
LIMIT
(NOTE 5)
Reverse Breakdown
Voltage
2.5
2.460
2.535
2.470
2.530
V(min)
V(max)
T
A
= 25
o
C,
20
A
I
R
20mA
Minimum Operating Current
13
18
20
20
20
A(Max)
Reverse Breakdown Voltage
Change with Current
1
1.5
2.0
1.5
mV(Max)
20
A
I
R
1mA
10
20
20
25
mV(Max)
1mA
I
R
20mA
Reverse Dynamic Impedance
1
I
R
= 100
A, f = 20Hz
Wideband Noise (rms)
120
V
I
R
= 100
A
10Hz
f
10kHz
Long Term
Stability
20
ppm
I
R
= 100
A, T = 1000Hr,
T
A
= 25
o
C
.0.1
o
C
Average Temperature
Coefficient (Note 6)
50
100
100
ppm/
o
C(Max)
I
R
= 100
A
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions,
see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed.
Note 2: For elevated temperature operation, T
j
max is:
CLM285 125
o
C
CLM385 100
o
C
Thermal Resistance
TO-92
SO-8
ja
(Junction to Ambient)
180
o
C/W (0.4" Leads)
170
o
C/W (0.125" Leads)
165
o
C/W
jc
(Junction to Case)
N/A
N/A
Note 3: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at T
A
= T
J
= 25
o
C.
Note 4: Guaranteed and 100% production tested.
Note 5: Guaranteed, but not 100% production tested. These limits are not used to calculate average outgoing quality levels.
Note 6: The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between
the operating T
MAX
and T
MIN
, divided by T
MAX
-T
MIN
. The measured temperatures are -55
o
C, -40
o
C, 0
o
C, 25
o
C, 70
o
C, 85
o
C, 125
o
C.
CLM285-2.5 / CLM385-2.5
CORPORATION
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