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MB39A110EVB

4-ch DC/DC Converter IC with Synchronous Rectification

Fujitsu 

FUJITSU SEMICONDUCTOR

DATA SHEET

DS04-27236-3E

ASSP For Power Supply Applications

(DC/DC Converter for DSC/Camcorder)

4-ch DC/DC Converter IC

with Synchronous Rectification

MB39A110

■ DESCRIPTION

The MB39A110 is a 4-channel DC/DC converter IC using pulse width modulation (PWM). This IC is ideal for up

conversion, down conversion, and up/down conversion.

This is built-in 4 ch in TSSOP-38P package and operates at 2 MHz Max. Each channel can be controlled, and

soft-start.

This is an ideal power supply for high-performance portable devices such as digital still cameras.

This product is covered by US Patent Number 6,147,477.

■ FEATURES

• Supports for down-conversion and up/down Zeta conversion (CH1 to CH3)

• Supports for up-conversion and up/down Sepic conversion (CH4)

• For synchronous rectification (CH1, CH2)

• Power supply voltage range : 2.5 V to 11 V

• Reference voltage : 2.0 V ± 1 %

• Error amplifier threshold voltage : 1.23 V ± 1%

• High-frequency operation capability: 2 MHz (Max)

• Standby current : 0 µA (Typ)

• Built-in soft-start circuit independent of loads

• Built-in totem-pole type output for MOS FET

• Short-circuit detection capability by external signal (−INS terminal)

• One type of package (TSSOP-38 pin : 1 type)

■ APPLICATIONS

• Digital still camera(DSC)

• Digital video camera(DVC)

• Surveillance camera

etc.

Copyright©2002-2006 FUJITSU LIMITED All rights reserved

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