LTC1157 查看數據表（PDF） - Linear Technology
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LTC1157 Datasheet PDF : 8 Pages
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LTC1157
U
TYPICAL APPLICATIO S
3.3V Ultra Low Voltage Drop Regulator with Optional Reverse
Battery Protection and 3µA Standby Current
+
3 TO 4
CELL
BATTERY
PACK
+
C1
10µF
Q1
IRLR024*
CONTROL
LOGIC
OR µP
VS
IN1
G1
LTC1157
R5
100k
IN2
G2
GND
R1
300Ω*
Q2
IRLR024
13
LT1431 8
56
R2
680Ω
C2
330pF
R3
3.3k
+
R4
10k
3.3V/1A
C3
220µF
*OPTIONAL REVERSE BATTERY PROTECTION. ADD R1 IN SERIES WITH THE
GROUND LEAD AND ADD Q1 IN SERIES WITH THE BATTERY AS SHOWN.
LTC1157 • TA08
U
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
0.300 – 0.320
(7.620 – 8.128)
N Package
8-Lead Plastic DIP
0.045 – 0.065
(1.143 – 1.651)
0.130 ± 0.005
(3.302 ± 0.127)
0.400
(10.160)
MAX
8
7
6
5
0.009 – 0.015
(0.229 – 0.381)
+0.025
0.325 –0.015
( ) 8.255
+0.635
–0.381
0.065
(1.651)
TYP
0.045 ± 0.015
(1.143 ± 0.381)
0.100 ± 0.010
(2.540 ± 0.254)
0.125
(3.175)
MIN
0.020
(0.508)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
0.250 ± 0.010
(6.350 ± 0.254)
12
34
N8 0392
0°– 8° TYP
0.010
(0.254
–
–
0.020
0.508)
×
45°
0.053 – 0.069
(1.346 – 1.752)
0.008 – 0.010
(0.203 – 0.254)
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
(408) 432-1900 q FAX: (408) 434-0507 q TELEX: 499-3977
S Package
8-Lead SOIC
0.189 – 0.197
(4.801 – 5.004)
8
7
6
5
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
0.228 – 0.244
(5.791 – 6.197)
0.150 – 0.157
(3.810 – 3.988)
SO8 0392
1
2
34
LT/GP 0193 10K REV 0
© LINEAR TECHNOLOGY CORPORATION 1993
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