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| LP3855-ADJ Datasheet, PDF (5/16 Pages) National Semiconductor (TI) – 1.5A Fast Response Ultra Low Dropout Linear Regulators | |||
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
Lead Temperature
(Soldering, 5 sec.)
ESD Rating (Note 3)
Power Dissipation (Note 2)
Input Supply Voltage (Survival)
Shutdown Input Voltage
(Survival)
Output Voltage (Survival), (Note
6), (Note 7)
â65ËC to +150ËC
260ËC
2 kV
Internally Limited
â0.3V to +7.5V
â0.3V to 7.5V
â0.3V to +6.0V
IOUT (Survival)
Short Circuit Protected
Operating Ratings
Input Supply Voltage (Operating),
(Note 10)
Shutdown Input Voltage
(Operating)
Maximum Operating Current (DC)
Operating Junction Temp. Range
2.5V to 7.0V
â0.3V to 7.0V
1.5A
â40ËC to +125ËC
Electrical Characteristics
LP3855-ADJ
Limits in standard typeface are for TJ = 25ËC, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 10 mA, COUT = 10µF, VSD = 2V.
Symbol
Parameter
Conditions
Typ
LP3855-ADJ (Note 5)
Units
(Note 4)
Min
Max
VADJ
Adjust Pin Voltage
VOUT +1V ⤠VIN⤠7V
10 mA ⤠IL ⤠1.5A
1.198
1.234
1.216
V
1.180
1.253
IADJ
Adjust Pin Input Current
VOUT +1V ⤠VIN⤠7V
10 mA ⤠IL ⤠1.5A
10
100
nA
âV OL
Output Voltage Line
VOUT +1V ⤠VIN ⤠7.0V
0.02
%
Regulation (Note 8)
0.06
âVO/ âIOUT Output Voltage Load
10 mA ⤠IL ⤠1.5A
0.06
%
Regulation
0.12
(Note 8)
VIN - VOUT
Dropout Voltage
IL = 150 mA
24
TO-263 and TO-220
(Note 9)
IL = 1.5A
240
35
45
310
mV
420
Dropout Voltage
IL = 150 mA
26
35
45
SOT 223
(Note 9), (Note 11)
IL = 1.5A
260
320
435
IL = 150 mA
3
Ground Pin Current In
IGND
Normal Operation Mode
IL = 1.5A
3
9
10
mA
9
10
IGND
Ground Pin Current In
Shutdown Mode
IO(PK)
Peak Output Current
Short Circuit Protection
VSD ⤠0.3V
-40ËC ⤠TJ ⤠85ËC
VO ⥠VO(NOM) - 4%
0.01
1.8
10
µA
50
A
ISC
Short Circuit Current
3.2
A
5
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