·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 Charge Voltage with ±1% Accuracy TMI4056D: 4.2V TMI4056DH: 4.35V
·Automatically Recharge
·Charge Statue Indication Pin
·DFN3x3-6 Package
The TMI4056D and TMI4056DH 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 TMI4056D and 4.35V for TMI4056DH, 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, TMI4056D and TMI4056DH automatically terminates the charge cycle with charging current becomes to 0 and CHAG pin status changes. 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 TMI4056D and TMI4056DH automatically enters low current state with less 1μA current dropping from battery side. Its DFN3x3-6 package and less external components make TMI4056D and TMI4056DH suited for portable applications.
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