Datasheet > AIC1639-27CX

AIC1639-27CX

更新时间： 2024-02-28 23:29:07

品牌	Logo	应用领域
沛亨 - AIC		转换器
页数	文件大小	规格书
11页	147K
描述
3-PIN ONE-CELL STEP-UP DC/DC CONVERTER

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中文翻译

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数据手册

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AIC1639-27CX 数据手册

AIC1639

3-PIN ONE-CELL STEP-UP DC/DC CONVERTER

SPEC NO: DS-1639-00 05/26/00

■

FEATURES

DESCRIPTION

l Guaranteed Start-Up from Below 0.9 V.

The AIC1639 is a high efficiency step-up DC/DC

converter for applications using 1 to 4 battery cells.

Only three external components are required to de-

liver a fixed output voltage of 2.7, 3.0V, 3.3V, or 5V.

The AIC1639 starts up from below 0.9V input with

1mA load. Pulse Frequency Modulation scheme

brings optimized performance for applications with

light output loading and low input voltages. The out-

put ripple and noise are lower compared with the

circuits operating in PSM mode.

l High Efficiency.

l Low Quiescent Current.

l Few Number of External Components needed.

l Low Ripple and Low Noise.

l Fixed Output Voltage: 2.7, 3.0V, 3.3V, and 5V.

l Driver for External Transistor.

l Space Saving SOT-89 and TO-92 Packages.

■

APPLICATIONS

l Pagers.

The PFM control circuit operating in 100KHz (max.)

switching rate results in smaller passive compo-

nents. The space saving SOT-89 and TO-92 pack-

ages make the AIC1639 an ideal choice of DC/DC

converter for space conscious applications, like

pagers, electronic cameras, and wireless micro-

phones.

l Cameras.

l Wireless Microphones.

l Pocket Organizers.

l Battery Backup Suppliers.

l Portable Instruments.

Provided with an external transistor driver pin (EXT),

the AIC1639 is recommended for applications re-

quiring current as large as several tens to several

hundreds of milli-amperes.

■

TYPICAL APPLICATION CIRCUIT

OUT

33 H

47 F

AIC1639-27

AIC1639-30

AIC1639-3 3

AIC1639-50

R1 300

VOUT

EXT

2SD1803

100 F

10nF

GND

100mA Load Current Step-Up Converter

ANALOG INTEGRATIONS CORPORATION

www.analog.com.tw

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

4F, 9IndustryE. 9thRoad, Science-basedIndustrialPark, Hsinchu, Taiwan, R.O.C.

12 3 4 5 6 7...11

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