STBC08PMR

STBC08PMR is a constant current/constant voltage charger for single-cell Li-Ion batteries. Neither external sense resistor nor blocking diode are required. The STBC08 is designed to work within USB power specifications. An internal block regulates the current when the junction temperature increases, 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, which flows to the battery, is 1/10 of the programmed value. If the external adapter is removed, the STBC08 turns off and a 2μA current can flow from the battery to the device. The device can be in shutdown mode, reducing the supply current to 25μA. Typical applications include cellular phones, PDAs, Bluetooth® applications and battery-powered devices.

• 800mA standalone linear Li-Ion battery charger with thermal regulation
• No external MOSFET, sense resistors or blocking diode are required
• Two charge status output pins
• Charge single-cell Li-Ion batteries directly from USB port
• Preset 4.2 V charge voltage with 1% accuracy
• Charge current monitor for gas gauge
• Automatic recharge and undervoltage lockout
• Low battery voltage detection for pre-charge setting
• Soft-start feature limits inrush current
• Available in a 6 pin DFN (3 x 3 mm) package