ChipFind - документация

Электронный компонент: LD2980ABM18TR

Скачать:  PDF   ZIP
1/17
February 2003
s
STABLE WITH LOW ESR CERAMIC
CAPACITORS
s
ULTRA LOW DROPOUT VOLTAGE (0.12V
TYP. AT 50mA LOAD, 7mV TYP. AT 1mA
LOAD)
s
VERY LOW QUIESCENT CURRENT (80A
TYP. AT NO LOAD IN ON MODE; MAX 1A
IN OFF MODE)
s
GUARANTEED OUTPUT CURRENT UP TO
50mA
s
LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
s
OUTPUT VOLTAGE OF 1.5; 1.8; 2.5; 2.85;
3.0; 3.2; 3.3; 3.6; 3.8; 4.0; 4.7; 4.85; 5.0V
s
INTERNAL CURRENT AND THERMAL LIMIT
s
0.5% TOLERANCE OUTPUT VOLTAGE
AVAILABLE (A VERSION)
s
OUTPUT LOW NOISE VOLTAGE 160VRMS
s
TEMPERATURE RANGE: -40 TO 125C
s
SMALLEST PACKAGE SOT23-5L AND
SOT-89
s
FAST DYNAMIC RESPONSE TO LINE AND
LOAD CHANGES
DESCRIPTION
The LD2980 series are 50mA fixed-output voltage
regulator. The low drop-voltage and the ultra low
quiescent current make them suitable for low
noise, low power applications and in battery
powered systems.
The quiescent current in sleep mode is less than
1A when INHIBIT pin is pulled low. Shutdown
Logic Control function is available on pin n.3 (TTL
compatible). This means that when the device is
used as local regulator, it is possible to put a part
of the board in standby, decreasing the total
power consumption. The LD2980 is designed to
work with low ESR ceramic capacitor. Typical
applications are in cellular phone, palmtop/laptop
computer,
personal
digital
assistant
(PDA),
personal stereo, camcorder and camera.
LD2980
SERIES
ULTRA LOW DROP VOLTAGE REGULATORS WITH INHIBIT
LOW ESR OUTPUT CAPACITORS COMPATIBLE
SCHEMATIC DIAGRAM
SOT23-5L
SOT-89
LD2980 SERIES
2/17
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
THERMAL DATA
CONNECTION DIAGRAM (top view)
PIN DESCRIPTION
Symbol
Parameter
Value
Unit
V
I
DC Input Voltage
-0.3 to 16
V
V
INH
INHIBIT Input Voltage
-0.3 to 16
V
I
O
Output Current
Internally limited
P
D
Power Dissipation
Internally limited
T
STG
Storage Temperature Range
-55 to 150
C
T
OP
Operating Junction Temperature Range
-40 to 125
C
Symbol
Parameter
SOT23-5L
SOT-89
Unit
R
thj-case
Thermal Resistance Junction-case
81
15
C/W
R
thj-amb
Thermal Resistance Junction-ambient
255
110
C/W
Pin N
SOT23-5L
Pin N
SOT-89
Symbol
Name and Function
1
3
V
IN
Input Port
2
2
GND
Ground Pin
3
INHIBIT
Control switch ON/OFF. Inhibit is not internally pulled-up; it cannot be
left floating. Disable the device when connected to GND or to a
positive voltage less than 0.18V
4
NC
Not Connected
5
1
V
OUT
Output Port
SOT23-5L
SOT-89
LD2980 SERIES
3/17
ORDERING CODES
TYPICAL APPLICATION CIRCUIT
(*) Inhibit Pin is not internally pulled-up then it must not be left floating. Disable the device when connected to GND or to a positive voltage
less than 0.18V.
AB VERSION
C VERSION
OUTPUT
VOLTAGES
SOT23-5L
SOT-89
SOT23-5L
SOT-89
LD2980ABM15TR
LD2980ABU15TR
LD2980CM15TR
LD2980CU15TR
1.5 V
LD2980ABM18TR
LD2980ABU18TR
LD2980CM18TR
LD2980CU18TR
1.8 V
LD2980ABM25TR
LD2980ABU25TR
LD2980CM25TR
LD2980CU25TR
2.5 V
LD2980ABM28TR
LD2980ABU28TR
LD2980CM28TR
LD2980CU28TR
2.85 V
LD2980ABM30TR
LD2980ABU30TR
LD2980CM30TR
LD2980CU30TR
3.0 V
LD2980ABM32TR
LD2980ABU32TR
LD2980CM32TR
LD2980CU32TR
3.2 V
LD2980ABM33TR
LD2980ABU33TR
LD2980CM33TR
LD2980CU33TR
3.3 V
LD2980ABM36TR
LD2980ABU36TR
LD2980CM36TR
LD2980CU36TR
3.6 V
LD2980ABM38TR
LD2980ABU38TR
LD2980CM38TR
LD2980CU38TR
3.8 V
LD2980ABM40TR
LD2980ABU40TR
LD2980CM40TR
LD2980CU40TR
4.0 V
LD2980ABM47TR
LD2980ABU47TR
LD2980CM47TR
LD2980CU47TR
4.7 V
LD2980ABM48TR
LD2980ABU48TR
LD2980CM48TR
LD2980CU48TR
4.85 V
LD2980ABM50TR
LD2980ABU50TR
LD2980CM50TR
LD2980CU50TR
5.0 V
LD2980 SERIES
4/17
ELECTRICAL CHARACTERISTICS FOR LD2980AB (T
j
= 25C, V
I
= V
O(NOM)
+1V, C
I
= 1
F(X7R),
C
O
= 2.2
F(X7R), I
O
= 1mA, V
INH
= 2V, unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
OP
Operating Input Voltage
2.5
16
V
V
O
Output Voltage
I
O
= 1 mA
1.492
1.5
1.508
V
I
O
= 1 to 50 mA
1.489
1.511
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
1.462
1.538
V
O
Output Voltage
I
O
= 1 mA
1.791
1.8
1.809
V
I
O
= 1 to 50 mA
1.786
1.814
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
1.755
1.845
V
O
Output Voltage
I
O
= 1 mA
2.487
2.5
2.513
V
I
O
= 1 to 50 mA
2.481
2.519
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
2.437
2.562
V
O
Output Voltage
I
O
= 1 mA
2.835
2.85
2.864
V
I
O
= 1 to 50 mA
2.828
2.871
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
2.779
2.921
V
O
Output Voltage
I
O
= 1 mA
2.985
3
3.015
V
I
O
= 1 to 50 mA
2.978
3.023
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
2.925
3.075
V
O
Output Voltage
I
O
= 1 mA
3.184
3.2
3.216
V
I
O
= 1 to 50 mA
3.176
3.224
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
3.12
3.28
V
O
Output Voltage
I
O
= 1 mA
3.284
3.3
3.317
V
I
O
= 1 to 50 mA
3.275
3.325
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
3.217
3.383
V
O
Output Voltage
I
O
= 1 mA
3.582
3.6
3.618
V
I
O
= 1 to 50 mA
3.573
3.627
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
3.51
3.690
V
O
Output Voltage
I
O
= 1 mA
3.781
3.8
3.819
V
I
O
= 1 to 50 mA
3.772
3.829
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
3.705
3.895
V
O
Output Voltage
I
O
= 1 mA
3.98
4
4.02
V
I
O
= 1 to 50 mA
3.97
4.03
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
3.9
4.1
V
O
Output Voltage
I
O
= 1 mA
4.677
4.7
4.724
V
I
O
= 1 to 50 mA
4.665
4.735
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
4.582
4.818
V
O
Output Voltage
I
O
= 1 mA
4.826
4.85
4.874
V
I
O
= 1 to 50 mA
4.814
4.886
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
4.729
4.971
V
O
Output Voltage
I
O
= 1 mA
4.975
5
5.025
V
I
O
= 1 to 50 mA
4.963
5.038
I
O
= 1 to 50 mA
T
J
= -40 to 125
C
4.875
5.125
LD2980 SERIES
5/17
(NOTE 1): For Vo < 2.5V dropout voltage can be calculated according to the minimum input voltage in full temperature range.
V
O
Line Regulation
V
O(NOM)
+ 1 < V
IN
< 16 V
I
O
= 1 mA
0.003
0.014
%/V
T
J
= -40 to 125
C
0.032
I
Q
Quiescent Current
ON MODE
I
O
= 0
80
100
A
I
O
= 0
T
J
= -40 to 125
C
150
I
O
= 1 mA
100
150
I
O
= 1 mA
T
J
= -40 to 125
C
200
I
O
= 10 mA
175
250
I
O
= 10 mA
T
J
= -40 to 125
C
450
I
O
= 50 mA
500
700
I
O
= 50 mA
T
J
= -40 to 125
C
1200
OFF MODE
V
INH
< 0.18 V
0
V
INH
< 0.18 V
T
J
= -40 to 125
C
1
V
DROP
Dropout Voltage (NOTE 1)
I
O
= 0
1
3
mV
I
O
= 0
T
J
= -40 to 125
C
5
I
O
= 1mA
7
10
I
O
= 1mA
T
J
= -40 to 125
C
15
I
O
= 10mA
40
60
I
O
= 10mA
T
J
= -40 to 125
C
90
I
O
= 50mA
120
150
I
O
= 50mA
T
J
= -40 to 125
C
225
I
SC
Short Circuit Current
R
L
= 0
150
300
mA
SVR
Supply Voltage Rejection
C
O
= 10
F
f = 1KHz
63
dB
V
INH
Inhibit Input Logic Low
LOW = Output OFF
T
J
= -40 to 125
C
0.8
0.18
V
V
INL
Inhibit Input Logic High
HIGH = Output ON
T
J
= -40 to 125
C
1.6
1.3
V
I
INH
Inhibit Input Current
V
INH
= 0V
T
J
= -40 to 125
C
0
-1
A
V
INH
= 5V
T
J
= -40 to 125
C
5
15
e
N
Output Noise Voltage
B
W
= 300 Hz to 50 KHz
C
O
= 10
F
160
V
RMS
T
SHDN
Thermal Shutdown
170
C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit