800mA Standalone linear Li-Ion Battery charger with thermal regulation

Description
The STBC08 is a constant current/constant voltage charger for single cell Li-Ion batteries. No external sense resistor or blocking diode is required.
The STBC08 is designed to work within USB power specifications. An internal block regulates the current when the junction temperature increases, in order to protect the device when it operates in high power or high ambient temperature conditions.
The charge voltage is fixed at 4.2V, and current limitation can be programmed using a single resistor connected between PROG pin and GND.
The charge cycle is automatically terminated when the current flowing to the battery is 1/10 of the programmed value. If the external adaptor is removed, the STBC08 turns off and a 2µA current can flow from the battery to the device. The device can be put into Shutdown Mode, reducing the supply current to 25µA. The device also has a charge current monitor, under voltage lockout, automatic recharge. The charge termination and input voltage presence are indicated by two separate status pins.

Feature summary
■ Programmable charge current up to 800mA
■ No external MOSFET, sense resistors or blocking diode required
■ Complete linear charger for single cell lithiumion batteries
■ Constant current / constant voltage operation with thermal regulation to maximize charge rate without risk of overheating
■ Two charge status output pins
■ Charges single cell li-ion batteries directly from USB port
■ Preset 4.2V charge voltage with 1% accuracy
■ Charge current monitor for gas gauging
■ Automatic recharge
■ Under-voltage lockout
■ C/10 Charge termination
■ 25µA supply current in shutdown mode
■ Low battery voltage detect for precharge setting
■ Soft-start feature limits inrush current
■ DFN6 (3x3mm) package (for better power dissipation)

Applications
■ Cellular telephones
■ PDAs
■ Bluetooth applications
■ Battery-powered devices