SC1650CSTR

更新时间： 2024-10-01 12:58:55

品牌	Logo	应用领域
商升特 - SEMTECH		转换器 DC-DC转换器
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4页	93K
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SC1650CSTR 数据手册

HIGH-VOLTAGE INVERTING

DC-DC CONVERTER

SC1650

TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com

January 29, 1998

DESCRIPTION

FEATURES

The SC1650 is a high performance inverting DC-DC

converter, designed to drive an external power switch

to generate programmable negative voltages. In the

particularly suitable LCD bias contrast application,

maximum efficiency of 90% can be achieved with low

cost PNP bipolar transistor drivers. The 4V to 24V

input operation range allows the SC1650 to be

powered directly by the battery pack in most battery-

operated applications for greater efficiency. The output

voltage can be scaled to -40V by two external

•

4V to 24V input voltage operation

Adjustable output voltage up to -40V

Low quiescent current at 100µA

Pulse frequency modulation maintains high

efficiency (max 90%)

100kHz to 320kHz switching frequency

Power-Saving shutdown mode (8µA typical)

High efficiency with low cost external PNP bipolar

transistor

•

resistors. A pulse frequency modulation scheme is

employed to maintain high efficiency conversion under

wide input voltage ranges. Quiescent current is about

100µA and can be reduced to 8µA in shutdown mode.

With a switching frequency range of 100kHz to

320kHz, small size switching components may be

used, which is ideal for battery powered portable

equipment such as notebook and palmtop computers.

APPLICATIONS

•

Negative LCD contrast bias for

1. Notebook & palmtop computers

2. Pen-based data systems

3. Portable data collection terminals

4. Personal digital assistants

Negative voltage supplies

•

BLOCK DIAGRAM

ORDERING INFORMATION

DEVICE⁽¹⁾

V_OUT

PACKAGE

SC1650CS

Adj

SO-8

Note:

(1) Add suffix ‘TR’ for tape and reel.

ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol Maximum Units

V⁺

Supply Voltage

SHDN Voltage

V_SHDN

PIN CONFIGURATION

Operating

Temperature

Range

T_A

0 to 70

°C

Storage

Temperature

Range

T_STG

-65 to 125

°C

652 MITCHELL ROAD NEWBURY PARK CA 91320

12 3 4

中文翻译

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