MB3882

FUJITSU SEMICONDUCTOR DATA SHEET DS04-27226-1E ASSP For Power Management Applications 2-channel DC/DC Converter IC with Synchronous Rectifier MB3882 s DESCRIPTION The MB3882 is a 2-channel DC/DC converter IC using pulse width modulation (PWM) and synchronous rectification, designed for down conversion applications. This device is a power supply with high output drive capacity. Synchronous rectification also provides for high efficiency. In addition, a 5 V regulator is built in to reduce the number of system components. The result is an ideal built-in power supply for driving products with high speed CPU’s such as home TV game devices and notebook PC’s. s FEATURES Synchronous rectification for high efficiency Supply voltage range : 5.5 V to 18 V High-precision reference voltage : 2.5 V ± 1% Error Amp. threshold voltage : 1.25 V ± 1% (0 °C to 85 °C) Oscillator frequency range : 10 kHz to 500 kHz Built-in soft start circuit with error Amp. input control Totem pole type output for N-ch MOSFET s PACKAGE 24-pin Plastic SSOP (FPT-24P-M03) MB3882 s PIN ASSIGNMENTS (TOP VIEW) CT : 1 RT : 2 SGND : 3 CS1 : 4 −INE1 : 5 FB1 : 6 +INC1 : 7 OUT1-1 : 8 VS1 : 9 CB1 : 10 OUT2-1 : 11 PGND : 12 24 : VREF 23 : VCC 22 : CSCP 21 : CS2 20 : −INE2 19 : FB2 18 : +INC2 17 : OUT1-2 16 : VS2 15 : CB2 14 : OUT2-2 13 : VB (FPT-24P-M03) 2 MB3882 s PIN DESCRIPTIONS Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Symbol CT RT SGND CS1 −INE1 FB1 +INC1 OUT1-1 VS...