8

LTC1157

© LINEAR TECHNOLOGY CORPORATION 1993

LT/GP 0193 10K REV 0

TYPICAL APPLICATIO S

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

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

87

6

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 3

µA Standby Current

+

GND

G2

G1

IN2

IN1

LTC1157

CONTROL

LOGIC

OR

µP

C1

10

µF

LTC1157 • TA08

+

3 TO 4

CELL

BATTERY

PACK

R1

300

Ω*

R5

100k

Q1

IRLR024*

LT1431

R2

680

Ω

C2

330pF

R3

3.3k

+

C3

220

µF

3.3V/1A

Q2

IRLR024

13

8

6

5

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