G5803 Global Mixed-mode Technology 1A Single Cell Li-Ion Battery Linear Charger Features 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 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 No external power MOSFET, sense resistor and blocking 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 external resistor. After the final regulation voltage is reached and the charge current drops to 1/10th 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, automatic recharge, over temperature protection and a charge status indication pin. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) G5803T11U G5803F11U 5803x G5803 -40°C ~ +85°C -40°C ~ +85°C SOT-23-5 SOP-8 (FD) Note: T1: SOT-23-5 F1: SOP-8 (FD) 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit 500mA Single Cell Li-Ion Charger VIN 300Ω G5803 CHRG 1 GND BAT G5803 5 PROG NC 1 PROG 2 GND 3 VIN 4 2 4 3 SOT-23-5 VIN Thermal Pad 8 NC 7 CHRG 6 NC 5 BAT SOP-8 (FD) VIN 4.5V to 6.5V G5803 LED VIN CHRG 1µF BAT 1.5Ω* GND PROG Li-lon Battery 2k Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. *1.5Ω resistor in series with a ceramic capacitor will minimize the start-up voltage overshoot transients TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.2 Jun 18, 2013 1