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EUP8057 Datasheet(PDF) 1 Page - Eutech Microelectronics Inc |
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EUP8057 Datasheet(HTML) 1 Page - Eutech Microelectronics Inc |
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1 / 16 page  EUP8057 DS8057 Ver 1.8 Nov. 2006 1 怎 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 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, 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 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 RoHS Compliant and 100% Lead (Pb)-Free APPLICATIONS Cellular Phones / PDAs/ MP3 Players/DSC Handheld Instruments |
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