Datasheet

8
LTC1157
 LINEAR TECHNOLOGY CORPORATION 1993
LT/GP 0193 10K REV 0
TYPICAL APPLICATIO S
U
S Package
8-Lead SOIC
0.010 – 0.020
(0.254 – 0.508)
0.016 – 0.050
0.406 – 1.270
× 45°
0°– 8° TYP
0.008 – 0.010
(0.203 – 0.254)
1
2
3
4
0.150 – 0.157
(3.810 – 3.988)
8
7
6
5
0.189 – 0.197
(4.801 – 5.004)
0.228 – 0.244
(5.791 – 6.197)
SO8 0392
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
PACKAGE DESCRIPTIO
U
Dimensions in inches (millimeters) unless otherwise noted.
N Package
8-Lead Plastic DIP
N8 0392
0.045 ± 0.015
(1.143 ± 0.381)
0.100 ± 0.010
(2.540 ± 0.254)
0.065
(1.651)
TYP
0.045 – 0.065
(1.143 – 1.651)
0.130 ± 0.005
(3.302 ± 0.127)
0.020
(0.508)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
0.125
(3.175)
MIN

12
3
4
876
5
0.250 ± 0.010
(6.350 ± 0.254)


0.400
(10.160)
MAX
0.009 – 0.015
(0.229 – 0.381)
0.300 – 0.320
(7.620 – 8.128)
0.325
+0.025
–0.015
+0.635
–0.381
8.255
()
3.3V Ultra Low Voltage Drop Regulator with Optional Reverse
Battery Protection and 3µA Standby Current
+
V
S
GND
G2
G1
IN2
IN1
LTC1157
CONTROL
LOGIC
OR µP
C1
10µF
LTC1157 • TA08
+
3 TO 4
CELL 
BATTERY 
PACK
R1
300Ω*
R5
100k
Q1
IRLR024*
LT1431
R2
680Ω
C2
330pF
R3
3.3k
+
C3
220µF

3.3V/1A
Q2
IRLR024
13
8
65
R4
10k
*OPTIONAL REVERSE BATTERY PROTECTION. ADD R1 IN SERIES WITH THE
GROUND LEAD AND ADD Q1 IN SERIES WITH THE BATTERY AS SHOWN.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
[phone]
●
FAX : [phone]
●
TELEX : 499-3977