STBC08 Datasheet, PDF (1/17 Pages) STMicroelectronics – 800mA Standalone linear Li-Ion Battery charger with thermal regulation

STBC08
800mA Standalone linear Li-Ion
Battery charger with thermal regulation
Feature summary
■ Programmable charge current up to 800mA
■ No external MOSFET, sense resistors or
blocking diode required
■ Complete linear charger for single cell lithium-
ion 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
DFN6 (3x3mm)
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.
Order code
Part number
STBC08PMR
September 2006
Package
QFN6 (3mm x 3mm)
Rev. 1
Packaging
4500 parts per reel
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www.st.com
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