LTC1142CG(RevC) 查看數據表（PDF） - Linear Technology

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LTC1142CG
(Rev.:RevC)

Dual High Efficiency Synchronous Step-Down Switching Regulators

Linear Technology 

LTC1142/LTC1142L/LTC1142HV

TYPICAL APPLICATIONS N

1400

1200

1000

800

600

400

200

0

0

1

2

3

4

SET RESISTANCE (kΩ)

1142 F16

Figure 16. LTC1142HV-ADJ Output Current vs Trickle Charge Set Resistance

(RX) for the Circuit in Figure 15 Using a 0.1Ω Current Sense Resistor RSENSE1

Note: For additional high efficiency circuits, see Application Note 54.

U

PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.

0.205 – 0.212**

(5.20 – 5.38)

G Package

28-Lead Plastic SSOP (0.209)

(LTC DWG # 05-08-1640)

0.068 – 0.078

(1.73 – 1.99)

0.397 – 0.407*

(10.07 – 10.33)

28 27 26 25 24 23 22 21 20 19 18 17 16 15

0° – 8°

0.005 – 0.009

(0.13 – 0.22)

0.022 – 0.037

(0.55 – 0.95)

0.0256

(0.65)

BSC

*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH

SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

0.010 – 0.015

(0.25 – 0.38)

**DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD

FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

0.002 – 0.008

(0.05 – 0.21)

0.301 – 0.311

(7.65 – 7.90)

1 2 3 4 5 6 7 8 9 10 11 12 13 14

G28 SSOP 0694

RELATED PARTS

PART NUMBER

LTC1143

LTC1147

LTC1148

LTC1149

LTC1159

LTC1174

LTC1265

LTC1266

LTC1267

LTC1574

DESCRIPTION

Dual Step-Down Switching Regulator Controller

Step-Down Switching Regulator Controller

Step-Down Switching Regulator Controller

Step-Down Switching Regulator Controller

Step-Down Switching Regulator Controller

Step-Down Switching Regulator with Internal 0.5A Switch

Step-Down Switching Regulator with Internal 1.2A Switch

Step-Up/Down Switching Regulator Controller

Dual High Efficiency Synchronous Switching Regulator

Step-Down Switching Regulator with Internal 0.5A Switch

and Schottky Diode

COMMENTS

Dual Version of LTC1147

Nonsynchronous, 8-Pin, VIN ≤ 16V

Synchronous, VIN ≤ 20V

Synchronous, VIN ≤ 48V, for Standard Threshold FETs

Synchronous, VIN ≤ 40V, for Logic Level FETs

VIN ≤ 18.5V, Comparator/Low Battery Detector

VIN ≤ 13V, Comparator/Low Battery Detector

Synchronous N- or P-Channel FETs, Comparator/Low Battery Detector

VIN to 40V

VIN ≤ 18.5V, Comparator

20 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 q FAX: (408) 434-0507 q TELEX: 499-3977

LT/GP 1196 5K REV C • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 1995

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