Datasheet

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 −65˚C to +150˚C
Lead Temperature
(Soldering, 5 sec.) 260˚C
ESD Rating (Note 3) 2 kV
Power Dissipation (Note 2) Internally Limited
Input Supply Voltage (Survival) −0.3V to +7.5V
Shutdown Input Voltage
(Survival) −0.3V to 7.5V
Output Voltage (Survival), (Note
6), (Note 7) −0.3V to +6.0V
I
OUT
(Survival) Short Circuit Protected
Maximum Voltage for ERROR
Pin V
IN
Maximum Voltage for SENSE Pin V
OUT
Operating Ratings
Input Supply Voltage (Note 11) 2.5V to 7.0V
Shutdown Input Voltage −0.3V to 7.0V
Maximum Operating Current (DC) 0.8A
Junction Temperature −40˚C to +125˚C
Electrical Characteristics
LP3871/LP3874
Limits in standard typeface are for T
J
= 25˚C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: V
IN
=V
O(NOM)
+ 1V, I
L
= 10 mA, C
OUT
= 10µF, V
SD
= 2V.
Symbol Parameter Conditions Typ
(Note 4)
LP3871/4 (Note 5) Units
Min Max
V
O
Output Voltage
Tolerance
(Note 8)
V
OUT
+1V ≤ V
IN
≤ 7.0V
10 mA ≤ I
L
≤ 0.8A 0
-1.5
-3.0
+1.5
+3.0
%
∆V
OL
Output Voltage Line
Regulation (Note 8)
V
OUT
+1V≤ V
IN
≤ 7.0V 0.02
0.06
%
∆V
O
/ ∆I
OUT
Output Voltage Load
Regulation
(Note 8)
10 mA ≤ I
L
≤ 0.8A 0.04
0.1
%
V
IN
-V
OUT
Dropout Voltage
(Note 10)
I
L
=80mA 24 35
40
mV
I
L
= 0.8A 240 300
350
I
GND
Ground Pin Current In
Normal Operation Mode
I
L
=80mA 5 9
10
mA
I
L
= 0.8A 6 14
15
I
GND
Ground Pin Current In
Shutdown Mode
V
SD
≤ 0.3V 0.01 10 µA
-40˚C ≤ T
J
≤ 85˚C 50
I
O(PK)
Peak Output Current V
O
≥ V
O(NOM)
-4% 1 A
Short Circuit Protection
I
SC
Short Circuit Current 2.3 A
LP3871/LP3874
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