TOLL TMI4054
800mA Li-ion Linear Charger
FEATURES
● 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 4.2V Battery Charge Voltage with ±1% Accuracy
● Automatically Recharge
● Charge Statue Indication Pin
● SOT23-5 Package
APPLICATIONS
● Portable Devices● Power Bank
● Charging Docks and Cradles
● Bluetooth
APPLICATIONS
GENERAL DESCRIPTION
The TMI4054 is a 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, and the charging current can be programmed by external resistor on PROG pin. The charging current could be programmed up to 800mA with good system thermal design. When the charging current drops to 1/10 programmed charging current value after the...