16

LT1511

1511fb LT/TP 0399 REV B 2K • PRINTED IN USA

©LINEAR TECHNOLOGY CORPORATION 1995

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

PART NUMBER

DESCRIPTION

COMMENTS

LTC

Microprocessor-Controlled Battery Management System

Can Charge, Discharge and Gas Gauge NiCd and Lead-Acid

Batteries with Software Charging Profiles

LT1372/LT1377

500kHz/1MHz Step-Up Switching Regulators

High Frequency, Small Inductor, High Efficiency Switchers, 1.5A Switch

LT1376

500kHz Step-Down Switching Regulator

High Frequency, Small Inductor, High Efficiency Switcher, 1.5A Switch

LT1505

High Current, High Efficiency Battery Charger

94% Efficiency, Synchronous Current Mode PWM

LT1510

Constant-Voltage/Constant-Current Battery Charger

Up to 1.5A Charge Current for Lithium-Ion, NiCd and NiMH Batteries

LT1512

SEPIC Battery Charger

LT1769

Constant-Voltage/Constant-Current Battery Charger

Up to 2A Charge Current for Lithium-Ion, NiCd and NiMH Batteries

RELATED PARTS

S24 (WIDE) 0996

NOTE 1

0.598 – 0.614*

(15.190 – 15.600)

22

21

20

19

18

17

16

15

1

23

4

5

6

78

0.394 – 0.419

(10.007 – 10.643)

910

13

14

11

12

23

24

0.037 – 0.045

(0.940 – 1.143)

0.004 – 0.012

(0.102 – 0.305)

0.093 – 0.104

(2.362 – 2.642)

0.050

(1.270)

TYP

0.014 – 0.019

(0.356 – 0.482)

TYP

0

° – 8° TYP

NOTE 1

0.009 – 0.013

(0.229 – 0.330)

0.016 – 0.050

(0.406 – 1.270)

0.291 – 0.299**

(7.391 – 7.595)

× 45°

0.010 – 0.029

(0.254 – 0.737)

NOTE:

1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.

THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS

DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

*

**

Figure 14. Critical Electrical and Thermal Path Layout

Dimensions in inches (millimeters) unless otherwise noted.

SW Package

24-Lead Plastic Small Outline (Wide 0.300)

(LTC DWG # 05-08-1620)

D1

L1

GND

GND

LT1511 • F14

TO

GND

TO

GND

GND

SW

GND

GND

GND

GND

GND

GND

NOTE: CONNECT ALL GND PINS TO EXPANDED PC LANDS FOR PROPER HEAT SINKING