ver: 0.2 jun 18, 2013 tel: 886-3-5788833 http://www.gmt.com.tw 1 G5803 global mixed-mode technology 1a single cell li-ion battery linear charger features ? no external power mosfet, sense resistor or blocking diode required ? 1% regulation voltage accuracy ? programmable constant charge current limit up to 1a ? automatic recharge ? complete pre-charge, constant current, constant voltage and charge termination charge procedure ? support for 5v power supply voltage ? internal thermal protection circuit ? sot-23-5 & sop-8 (fd) package general description the G5803 is a standalone linear li-ion battery charger with a complete pre-charge, constant-current and constant-voltage charge loop. no external power mosfet, sense resistor and block- ing diode is required due to internal power mosfet architecture. the charge voltage is regulated at 4.2v, and the charge current is programmable by an exter- nal resistor. after the final regulation voltage is reached and the charge current drops to 1/10 th the programmed charge current, the open drain nmos chrg pin would be turn off automatically without terminating the charge loop. other features include under voltage lockout, auto- matic recharge, over temperature protection and a charge status indication pin. ordering information order number marking temp. range package (green) G5803t11u 5803x -40 c ~ +85 c sot-23-5 G5803f11u G5803 -40 c ~ +85 c sop-8 (fd) note: t1: sot-23-5 f1: sop-8 (fd) 1: bonding code u: tape & reel pin configuration typical application circuit bat prog gnd G5803 2k v in 4.5v to 6.5v 1 f 500ma single cell li-ion charger li-lon battery vin chrg 300 v in led 1.5 * * 1.5 resistor in series with a ceramic capacitor will minimize the start-up voltage overshoot transients prog sot-23-5 5 4 1 chrg 2 3 gnd bat G5803 vin note: recommend connecting the thermal pad to the ground for excellent power dissipation. sop-8 (fd) G5803 gnd 8 6 5 1 2 3 4 nc prog vin nc chrg nc bat 7 thermal pad bat prog gnd G5803 2k v in 4.5v to 6.5v 1 f 500ma single cell li-ion charger li-lon battery vin chrg 300 v in led 1.5 * * 1.5 resistor in series with a ceramic capacitor will minimize the start-up voltage overshoot transients prog sot-23-5 5 4 1 chrg 2 3 gnd bat G5803 vin note: recommend connecting the thermal pad to the ground for excellent power dissipation. sop-8 (fd) G5803 gnd 8 6 5 1 2 3 4 nc prog vin nc chrg nc bat 7 thermal pad
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