EUP8057-1A Linear Charge Management Controllers

EUP8057-Advanced 1A Linear Charge Management Controllers DataSheet

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
• RoHS Compliant and 100% Lead (Pb)-Free

APPLICATIONS
• Cellular Phones / PDAs/ MP3 Players/DSC
• Handheld Instruments