EUP8051A

EUP8051A Low Cost 1A Linear Battery Charge Controllers DESCRIPTION The EUP8051A is a single Lithium-Ion (Li-Ion) and Lithium–Polymer (Li-Pol) linear charge management controller for use in cost sensitive and portable applications. It combines high accuracy constant-current and constant-voltage regulation, cell preconditioning, temperature monitoring, automatic charge termination, charge-status indication, in a space-saving MSOP-8 package. The EUP8051A applies a constant current up to 1A to the battery and the charge current can be programmed externally with a sense-resistor. The EUP8051A 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 EUP8051A 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. VÛm w`R yÑb € 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 (4.2V) 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 Automa...