MB3833A

FUJITSU SEMICONDUCTOR DATA SHEET DS04-27700-3E ASSP For Power Management Applications (Secondary battery) Lithium Ion Battery Charger DC/DC Converter IC (High Precision with Constant-current Function) MB3813A/MB3833A/MB3843 s DESCRIPTION The FUJITSU MB3813A/33A/43 are pulse width modulation (PWM) DC/DC converter ICs with independent output voltage and current setting capability. The use of on-chip output setting resistance enables high precision output voltage control. Also, an output voltage switching feature for use with either graphite-electrode or coke-electrode lithium-ion batteries makes this IC ideal for internal battery chargers in notebook personal computers and similar applications. Cell count 3-cell 2-cell 1-cell 8.4 V/8.2 V 4.2 V/4.1 V Output voltage 12.6 V/12.3 V MB3813A MB3833A MB3843 Part number s FEATURES Output setting resistance is on-chip for high precision output voltage: ±1.0% SEL pin enables output voltage selection High precision reference voltage source: 2.5 V ± 1.0% High frequency operating capability: max. 500 kHz On-chip current detector amplifier with wide in-phase input voltage range: 0 V to VCC (Continued) s PACKAGE 16-pin plastic SSOP (FPT-16P-M05) MB3813A/MB3833A/MB3843 (Continued) On-chip standby function On-chip input voltage detector circuit On-chip soft start control circuit On-chip output overshoot protection circuit for rapid load changes On-chip totem-pole output circuits for P-ch. MOS FET devices 2 MB3813A...