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| LP3961 Datasheet, PDF (7/20 Pages) National Semiconductor (TI) – 800mA Fast 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 VIN+0.3V
â0.3V to +7.5V
IOUT (Survival)
Maximum Voltage for ERROR Pin
Maximum Voltage for SENSE Pin
Short Circuit Protected
VIN+0.3V
VOUT+0.3V
Operating Ratings
Input Supply Voltage (Operating)
Shutdown Input Voltage
(Operating)
Maximum Operating Current
(DC)
Operating Junction Temp. Range
2.5V to 7.0V
â0.3V to VIN+0.3V
0.8A
â40ËC to +125ËC
Electrical Characteristics
LP3961/LP3964
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 = VIN-0.3V.
Symbol
VO
âV OL
âVO/
âIOUT
Parameter
Output Voltage
Tolerance
(Note 8)
Output Voltage Line
Regulation (Note 8)
Output Voltage Load
Regulation
(Note 8)
Conditions
VOUT+1V<VIN<7.0V
10 mA < IL < 800 mA
3.135 ⤠VIN ⤠7.0 for
VOUT = 2.5V
VOUT+1V<VIN<7.0V,
10 mA < IL < 800 mA
Typ(Note
4)
0
0.02
0.06
0.02
0.08
LP3961/4 (Note 5)
Min
Max
-1.5
+1.5
-3.0
+3.0
Units
%
%
%
VIN -
IL = 80 mA
24
VOUT
Dropout Voltage
(Note 10)
IL = 800 mA
240
30
35
mV
300
350
Ground Pin Current In
IL = 80 mA
3
IGND
Normal Operation
Mode
IL = 800 mA
4
9
10
mA
14
15
IGND
Ground Pin Current In
VSD ⤠0.2V
15
Shutdown Mode
(Note 11)
25
µA
75
IO(PK)
Peak Output Current
(Note 2)
1.5
1.2
A
1.1
SHORT CIRCUIT PROTECTION
ISC
Short Circuit Current
OVER TEMPERATURE PROTECTION
2.8
A
Tsh(t)
Shutdown Threshold
165
ËC
Tsh(h)
Thermal Shutdown
Hysteresis
10
ËC
SHUTDOWN INPUT
VSDT
Shutdown Threshold
Output = High
Output = Low
VIN
VINâ0.3
V
0
0.2
TdOFF
Turn-off delay
IL = 800 mA
20
µs
TdON
Turn-on delay
IL = 800 mA
25
µs
ISD
SD Input Current
VSD = VIN
1
nA
7
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