·Programmable Charge Current Up to 1A
·No MOSFET, Sense Resistor or Blocking Diode Required
·Charge Single Cell Li-Ion Battery Directly from USB Port
·Trickle Current, Constant Current and Constant Voltage Operation with Thermal Regulation to Maximize Charge Rate without Overheating
·<1µA Battery Quiescent Current
·Preset Battery Charging Voltage with ±1% Accuracy TMI4056E: 4.2V TMI4056EH: 4.35V
·Automatically Recharge
·Charge Statue Indication Pins
·ESOP8 Package
The TMI4056E and TMI4056EH are complete constant-current and constant-voltage linear charger for single cell Li-ion battery application.
The default battery charge voltage is fixed at 4.2V for TMI4056E and 4.35V for TMI4056EH, and the charging current can be programmed by external resistor on PROG pin. The charging current could be programmed up to 1A with good system thermal design. When the charging current drops to 1/10 programmed charging current value after the BAT voltage reaching battery charge voltage, TMI4056E and TMI4056EH automatically terminate the charge cycle with charging current becomes to 0 and CHAG and STDBY pins status change. Thermal regulation function can regulate charging current to limit the die temperature during high power condition or high ambient temperature application.
When the input supply is removed, the TMI4056E and TMI4056EH automatically enter low current state with less 1μA current dropping from battery side. The ESOP8 package and less external components make TMI4056E and TMI4056EH suited for portable applications.
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