MB39A103

FUJITSU SEMICONDUCTOR DATA SHEET DS04-27230-3E ASSP For Power Manegement Applications (DC/DC Converter for DSC/Camcorder) 4-ch DC/DC Converter IC for low voltage MB39A103 ■ DESCRIPTION The MB39A103 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. Achievement of low voltage start-up (1.7 V or more) enables operation from low voltage. 4ch is built in TSSOP-30P/package. 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) Supports for up-conversion and up/down Sepic conversion (CH2 to CH4) Low voltage start-up (CH4): 1.7 V Power supply voltage range : 2.5 V to 11 V Reference voltage : 2.0 V ± 1 % Error amplifier threshold voltage : 1.24 V ± 1.5 % Built-in totem-pole type output for MOS FET Built-in soft-start circuit independent of loads High-frequency operation capability: 1.5 MHz (Max) External short-circuit detection capability by −INS terminal ■ PACKAGES 30-pin plastic TSSOP 32-pad plastic BCC (FPT-30P-M04) (LCC-32P-M15) www.DataSheet4U.com www.DataSheet4U.com MB39A103 ■ PIN ASSIGNMENTS (TOP VIEW) CS2 −INE2 FB2 DTC2 VCC CTL VREF RT CT GND CSCP DTC3 FB3 −INE3 CS3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 2...