EUP8057 Datasheet | Eutech Microelectronics

«ç Advanced 1A Linear Charge Management Controllers DESCRIPTION The EUP8057 is a highly advanced Lithium-Ion (Li-Ion) and Lithium- Polymer (Li-Pol) linear charge management controller for use in cost sensitive and portable applications. It bines high accuracy constant-current and constant-voltage regulation, cell preconditioning, temperature monitoring, automatic charge termination, charge-status indication, in a space-saving MSOP-8, TSSOP-8 package. .. The EUP8057 applies a constant current up to 1A to the battery and the charge current can be programmed externally with a sense-resistor. The EUP8057 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 EUP8057 automatically enters a low-power sleep mode. 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 4.5V-15V Wide Input Voltage Range Ideal for Single Cell (4.1V or 4.2V) and Dual-Cell (8.2V or 8.4V) Li-Ion or Li-Pol Batteries Preset Charge Voltage with ±1% Accuracy Programmable Charge Current up to 1A Constant-Current/Constant Voltage Operation Preconditioning of Low Voltage Cells Optional Cell-Temperature Monitoring Before and During Charge Charge Status Output for Single of Dual Led or Host Processor Interface Automatic Battery Recharge Charge Termination by Minimum Current Automatic Low-Power Sleep Mode When Input Power is Removed Available in TSSOP-8, MSOP-8 and SOP-8 Package Ro HS pliant and 100% Lead (Pb)-Free APPLICATIONS z z Cellular Phones / PDAs/ MP3 Players/DSC Handheld Instruments DS8057 Ver 1.8 Nov. 2006 Typical Application Circuit .. DS8057 Ver 1.8 Nov. 2006 Pin Configurations Part...