Datasheet > AIC1652

AIC1652

更新时间： 2024-09-15 22:53:43

品牌	Logo	应用领域
沛亨 - AIC		转换器
页数	文件大小	规格书
6页	61K
描述
MICROPOWER INVERTING DC/DC CONVERTER

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AIC1652 数据手册

AIC1652

MICROPOWER INVERTING DC/DC CONVERTER

SPEC NO: DS-1652-02 DEC 27, 00

n ^FEATURES

n ^DESCRIPTION

The AIC1652 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 con-

trast application, efficiency of 87% can be

achieved with low cost PNP bipolar transistor driv-

ers. Output voltage can be scaled to -40V or

greater by two external resistors. A pulse frequen-

cy modulation scheme is employed to maintain

high efficiency conversion under wide input voltage

range. Quiescent current is about 80mA and can

be reduced to 0.7mA in shutdown mode. Switching

frequency being around 70KHz to 160KHz range,

small size switching components are ideal for bat-

tery powered portable equipments, like notebook

and palmtop computers.

2.4V to 7V Input Voltage Operation.

Adjustable Output Voltage up to -40V.

Low Quiescent Current at 80mA.

Pulse Frequency Modulation Maintains High

Efficiency (87%).

70KHz to 160KHz Switching Frequency.

Power-Saving Shutdown Mode (0.7mA Typical).

High Efficiency with Low Cost External PNP

Bipolar Transistor.

n ^APPLICATIONS

l Negative LCD Contrast Bias for

1. Notebook & Palmtop Computers.

2. Pen-Based Data System.

3. Portable Data Collection Terminals.

4. Personal Digital Assistants.

l Negative Voltage Supply.

n ^{TYPICAL APPLICATION CIRCUIT}

V_IN

2.4V ~ 7V

VIN

DHI

100 F

9012

VREF

AIC1652

D1 1N5819

SHDN

DLOW

470~1.8K

VOUT

-12V~ -40V

-10mA

GND

150 H

100 F

0.047 F

Sumida CD-54 Series

V_OUT= -1.22V x R1/R2

100K

10nF

Negative LCD Contrast Bias Power Supply

n ^{ORDERING INFORMATION}

AIC1652 XX

PIN CONFIGURATION

ORDER NUMBER

TOP VIEW

PACKAGE TYPE

N: PLASTIC DIP

S: SMALL OUTLINE

AIC1652CN

(PLASTIC DIP)

VIN

DHI

VREF

DLOW

GND

SHDN

TEMPERATURE RANGE

AIC1652CS

(PLASTIC SO)

C=0 C~+70 C

ANALOG INTEGRATIONS CORPORATION

www.analog.com.tw

TEL: (8863)577-2500 FAX:(8863)577-2510

4F, 9 Industry E. 9th Road, Science-based IndustrialPark, Hsinchu, Taiwan, R.O.C.

12 3 4 5 6

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