L6920DB datasheet(1/16 Pages) STMICROELECTRONICS

部件名	L6920DB

功能描述	Synchronous rectifier step up converter

PDF	16 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

1 / 16 page

October 2006

Rev 5

1/16

16

L6920DB

Synchronous rectifier step up converter

General features

■ 0.8V start up input voltage

■ Up to 5.5V operating input voltage

■ Internal synchronous rectifier

■ Adjustable output voltage from 1.8V

■ 3.3V and 5V fixed output voltages

■ Low battery voltage detection

■ Reverse battery protection

■ 750mA input current limit

■ Switching frequency up to 1MHz

■ 1.23V reference voltage available

Applications

■ Conversion from 1 to 3 alkaline,

■ NiMH, NiCd battery cells or 1 lithium ION

■ PDA and handheld instruments

■ Digital cameras

■ Cellular phones

■ GPS

■ Distributed power

Description

The L6920DB is a high efficiency monolithic step

up switching converter IC especially designed for

battery powered application.

Package is MSOP8 in order to minimize PCB

space. It requires only three external components

to realize the conversion from the battery voltage

to the selected output voltage.

The minimum output voltage is 1.8V: suitable to

supply the most advanced ASIC and µP.

High switching frequency allows for a low profile,

small sized inductor and output capacitor to be

used.

Reference voltage, low battery detection and

Shutdown are provided together with over current.

MSOP8

www.st.com

Application circuit

L6920DB

3.3V

类似零件编号 - L6920DB

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STMicroelectronics	L6920D	238Kb / 13P	1V HIGH EFFICIENCY SYNCRONOUS STEP UP CONVERTER Rev. 2
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