AIC1611 데이터 시트보기 (PDF) - Analog Intergrations

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AIC1611

High Efficiency Synchronous Step-Up DC/DC Converter

Analog Intergrations 

AIC1610/AIC1611

High Efficiency Synchronous Step-Up DC/DC

Converter

FEATURES

High Efficiency (9 3 % when VIN=2.4V,

VOUT=3.3V, IOUT=200mA)

Output Current up to 500mA. (AIC1610 at

VIN=2.4V and VOUT=3.3V)

20µA Quiescent Supply Current.

Power-Saving Shutdown Mode (0.1µA typical).

Internal Synchronous Rectifier (No External Di-

ode Required).

On-Chip Low Battery Detector.

Low Battery Hysteresis

Space-Saving Package: MSOP-8

APPLICATIONS

Palmtop & Notebook Computers.

PDAs

Wireless Phones

Pocket Organizers.

Digital Cameras.

Hand-Held Devices with 1 to 3-Cell of

NiMH/NiCd Batteries.

DESCRIPTION

The AIC1610/AIC1611 are high efficiency

step up DC-DC converters. The start-up volt-

age is as low as 0.8V with operating voltage

down to 0.7V. Simply consuming 20µA of qui-

escent current. These devices offer a built-in

synchronous rectifier that reduces size and

cost by eliminating the need for an external

Schottky diode and improves overall effi-

ciency by minimizing losses.

The switching frequency can range up to

500KHz depending on the load and input volt-

age. The output voltage can be easily set by

two external resistors from 1.8V to 5.5V,

connecting FB to OUT to get 3.3V, or con-

necting to GND to get 5.0V. The peak current

of the internal switch is fixed at 1.0A (AIC1610)

or 0.65A (AIC1611) for design flexibility.

TYPICAL APPLICATION CIRCUIT

VIN

+

47µF

ON

OFF

Low Battery

Detection

SHDN

LX

AIC1610 OUT

AIC1611

LBI

LBO

REF GND FB

0.1µF

22µH

Output 3.3V, 5.0V

or Adj. (1.8V to 5.5V)

+

up to 300mA

47µF

Low-battery

Detect Out

Analog Integrations Corporation

Si-Soft Research Center

3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.

TEL: 886-3-5772500

FAX: 886-3-5772510 www.analog.com.tw

DS-1610P-03 010405

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