Single-cell Li-Ion charger with USB input — what it does
The Texas Instruments BQ24027DRCTG4 is a linear charger IC from the bqTINY™-II series, designed for single-cell Lithium-Ion or Lithium-Polymer battery packs. It accepts a USB bus input and delivers a programmable constant charge current up to 500 mA, terminating at a regulated 4.2 V battery voltage. The part includes over-temperature fault protection and programmable charge-current and timer settings, making it a self-contained charge-management solution for portable devices.
Package and temperature — design-in constraints
Housed in a 10-VFDFN exposed-pad package (3x3 mm VSON), the BQ24027DRCTG4 requires a surface-mount assembly process with a thermal pad connection for heat dissipation.
Obsolete — sourcing reality
The BQ24027DRCTG4 carries an Obsolete product status.
