Datasheet > AIC1628CS

AIC1628CS

更新时间： 2024-09-30 22:47:43

品牌	Logo	应用领域
沛亨 - AIC		转换器
页数	文件大小	规格书
7页	258K
描述
3-Cell, High-Efficiency, Step-Up DC/DC Converter

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中文翻译

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AIC1628CS 数据手册

AIC1628

3-Cell, High-Efficiency, Step-Up DC/DC Converter

FEATURES

DESCRIPTION

ꢀ

4V to 24V Input Voltage Operation.

Adjustable Output Voltage.

The AIC1628 is a high performance step-up

DC/DC converter, designed to drive an external

power switch to generate programmable posi-

tive voltages. In the particularly suitable LCD

contrast bias and flash memory programming

power supply applications, typical full-load effi-

ciencies are 85% to 95%. 4V to 24V input op-

eration range allows the AIC1628 to be powered

directly by the battery pack in the most battery-

operated applications for greater efficiency.

Output voltage can be scaled to 40V or greater

by two external resistors. A Pulse-Frequency

Modulation scheme is employed to maintain

high efficiency conversion under wide input

voltage range. Quiescent current is about

100µA and can be reduced to 8µA in shutdown

mode. Switching frequency being around 90KHz

to 250KHz range, small size switching compo-

nents are ideal for battery powered portable

equipments, like notebook and palmtop com-

puters.

ꢀ

Low Quiescent Current at 100µA.

Pulse-Skipping and Pulse-Frequency Modulation

Maintain High Efficiency (max. 95%).

90KHz to 250KHz Oscillator Frequency.

Power-Saving Shutdown Mode (8µA Typical).

Push-Pull Driver Output.

ꢀ

APPLICATIONS

ꢀ

Flash Memory Programming Power Supply.

Positive LCD Contrast Bias for Notebook &

ꢀ

Palmtop Computers.

Step-Up DC/DC Converter Module.

Telecom Power Supply.

ꢀ

TYPICAL APPLICATION CIRCUIT

ꢀ

+5V ~ 24V

V^IN

*Fuse

120µF

V_IN=13V

V_IN=5V

60m

Ω

DHI

VIN

V_IN=18V

V_IN=9V

**L1

VREF

SHDN

68µH

+36V

DLOW

GND

1N5819

V^OUT

>50mA

2SK940

220µF

AIC1628

0.1µF

V_OUT=36V

100

Load Current (mA)

150

200

0.01µF

16.5K

*Buss Fuse MCR-2A

**Sumida CDR105

0.033

µF

470K

Color LCD Contrast Bias^CS⁴upply

Efficiency vs. Output Current

Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC

DS-1628-00 TEL: 886-3-5772500 FAX: 886-3-5772510

www.analog.com.tw

12 3 4 5 6 7

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