MB39A112 Ver la hoja de datos (PDF) - Fujitsu

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MB39A112

3-ch DC/DC Converter IC

Fujitsu 

FUJITSU SEMICONDUCTOR

DATA SHEET

DS04-27239-1E

ASSP For Power Supply Applications

(General-Purpose DC/DC Converter)

3-ch DC/DC Converter IC

MB39A112

s DESCRIPTION

The MB39A112 is a 3-channel DC/DC converter IC using pulse width modulation (PWM) , and the MB39A112 is

suitable for down-conversion.

3-channel is built in TSSOP-20P package. Each channel can be controlled and soft-start.

The MB39A112 contains a constant voltage bias circuit for output block, capable of implementing an efficient

high-frequency DC/DC converter. It is ideal for built-in power supply such as ADSL modems.

s REATURES

• Supports for down-conversion (CH1 to CH3)

• Power supply voltage range : 7 V to 25 V

• Error amplifier threshold voltage : 1.00 V ± 1% (CH1)

: 1.23 V ± 1% (CH2, CH3)

• Oscillation frequency range : 250 kHz to 2.6 MHz

• Built-in soft-start circuit independent of loads

• Built-in timer-latch short-circuit protection circuit

• Built-in totem-pole type output for P-channel MOS FET devices

• Built-in constant voltage (VCCO − 5 V) bias circuit for output block

s PACKAGE

20-pin plastic TSSOP

(FPT-20P-M06)

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