DESCRIPTION
The EUP8051 automatically terminates the charge cycle when the charge current drops to the charge termination threshold (ITERM) after the charge-regulation voltage is reached. When the input supply is removed, the EUP8051 automatically enters a low-power sleep mode, dropping the battery drain current to less than 1µA. A battery charge state output pin is provided to indicate battery charge status through a display LED. The battery charge status output is a serial interface which may also be read by a system microcontroller. FEATURES
z z z z z z z z z z z z z Programmable Charge Current up to 1A 4.5V-7V Input Voltage Range Ideal for Single Cell (4.1V or 4.2V) Li-Ion or Li-Pol Batteries Preset Charge Voltage with ±1% Accuracy Constant-Current/Constant Voltage Operation Preconditioning of Low Voltage Cells Optional Cell-Temperature Monitoring Before and During Charge Charge Status Indication Automatic Battery Recharge Charge Termination by Minimum Current Automatic Low-Power S...