AIC1638 데이터 시트보기 (PDF) - Analog Intergrations

부품명

상세내역

제조사

AIC1638

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

Analog Intergrations 

FEATURES

! Guaranteed Start-Up from below 0.9 V.

! High Efficiency.

! Low Quiescent Current.

! Few Number of External Components needed.

! Low Ripple and Low Noise.

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

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

APPLICATIONS

! Pagers.

! Cameras.

! Wireless Microphones.

! Pocket Organizers.

! Battery Backup Suppliers.

! Portable Instruments.

AIC1638

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

SPEC NO: DS-1638-00 03/01/00

DESCRIPTION

The AIC1638 is a high efficiency step-up DC/DC

converter for applications using 1 to 4 NiMH battery

cells. Only three external components are required to

deliver a fixed output voltage of 2.7V, 3.0V, 3.3V, or

5V. The AIC1638 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 output

ripple and noise are lower compared with the circuits

operating in PSM mode.

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

switching rate results in smaller passive

components. The space saving SOT-89 and TO-92

packages make the AIC1638 an ideal choice of

DC/DC converter

for space conscious

applications, like pagers, electronic cameras, and

wireless microphones

TYPICAL APPLICATION CIRCUIT

VIN

+ C2

47µF

L1

88µH

D1

VOUT

AIC1638-27

SW

AIC1638-30

AIC1638-33

AIC1638-50

GND

VOUT

+

C1

22µF

One Cell Step-Up DC/DC Converter

ANALOG INTEGRATIONS CORPORATION

www.analog.com.tw

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

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

1

Share Link: