DS04-27204-5E

FUJITSU SEMICONDUCTOR

DATA SHEET

Copyright©1994-2006 FUJITSU LIMITED All rights reserved

ASSP

BIPOLAR

SWITCHING REGULATOR

CONTROLLER

MB3775

■ LOW VOLTAGE DUAL PWM SWITCHING REGULATOR CONTROLLER

The MB3775 is a dual pulse-width-modulation control circuit. It contains the basic circuits required for two PWM

control circuits. Complete synchronization is obtained by using the same oscillator output waveform.

This IC can provide following types of output voltage: step down, step up, and inverter. Power consumption is low,

thus the MB3775 is ideal for use in high-efficiency portable equipment.

■ FEATURES

• Wide supply voltage range: 3.6 V to 18 V

• Low current consumption: 1.3 mA typical

• Wide oscillation frequency range: 1 kHz to 500 kHz

• On-chip timer latch short protection circuit

• On-chip under voltage lockout protection

• On-chip reference voltage: 1.28 V

• Variable dead time provides control over total operating range.

• Two types of packages (SOP-16pin : 1 type, SSOP-16pin : 1 type)

■ APPLICATIONS

• LCD monitor/panel

• Surveillance camera

etc.