MB39A108中文資料富士通數(shù)據(jù)手冊PDF規(guī)格書

ASSP for Power Supply Applications

(DC/DC converter for DSC/camcorder)

■ DESCRIPTION

The MB39A108 is 5-channel DC/DC converter IC using pulse width modulation (PWM), and is suitable for up conversion, down conversion, and up/down conversion. The MB39A108 is built in 5 channels into TSSOP-38P/BCC-40P package and operates at 2 MHz maximum. Each channel can be controlled with soft-start.

The MB39A108 is suitable for power supply of high performance portable instruments such as DSC.

■ FEATURES

? Supports for down-conversion with synchronous rectification (CH1)

? Supports for down-conversion and up/down Zeta conversion (CH2, CH3)

? Supports for up-conversion and up/down Sepic conversion (CH4, CH5)

? Low voltage start-up (CH4, CH5) : 1.7 V

? Power supply voltage range : 2.5 V to 11 V

? Reference voltage : 2.0 V ± 1

? Error amplifier threshold voltage : 1.00 V ± 1 (CH1), 1.23 V ± 1 (CH2 to CH5)

? Oscillation frequency range : 200 kHz to 2.0 MHz

? 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)

? Two types of package (TSSOP-38 pin : 1 type, BCC-40 pin : 1 type)

■ APPLICATIONS

? Digital still camera (DSC)

? Digital video camera (DVC)

? Surveillance camera etc.