MB3832A

FUJITSU SEMICONDUCTOR DATA SHEET DS04-27701-2E ASSP For Power Management Applications (Secondary battery) DC/DC Converter IC for Charging MB3832A s DESCRIPTION The MB3832A is a pulse width modulation (PWM) DC/DC converter IC, incorporating a current detector amplifier and error amplifiers (2 circuits) to control the output voltage and current independently. It is suitable for downconversion. With an on-chip reference voltage generator, the MB3832A is best suited for use in applications such as lithiumion battery (1-cell to 3-cell) chargers. s FEATURES High precision reference voltage source: 2.5 V ± 0.5% (+25°C) : 2.5 V ± 1.0% (–10°C to +85°C) High frequency operating capability: 500 kHz max. Wide operating supply voltage range: 3.6 V to 18 V On-chip current detector amplifier with wide in-phase input voltage range: 0 V to VCC On-chip standby function On-chip triangular waveform oscillator capable of operating in external synchronization On-chip, timer-latch short-circuit protection circuit Internal totem-pole output stage supporting P-channel MOS FETs and PNP transistors s PACKAGE 20-pin plastic SSOP (FPT-20P-M03) MB3832A s PIN ASSIGNMENT (TOP VIEW) VREF : 1 RT : 2 CT : 3 SYNC : 4 CSCP : 5 FB1 : 6 −IN1 : 7 +IN1 : 8 −INC : 9 +INC : 10 20 : VE 19 : OUT 18 : VCC 17 : CTL 16 : DTC 15 : FB2 14 : −IN2 13 : +IN2 12 : COUT 11 : GND (FPT-20P-M03) 2 MB3832A s PIN DESCRIPTION Pin no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pin name VREF RT CT SY...