L6924U Datasheet, PDF (1/38 Pages) STMicroelectronics – USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer

L6924U
USB compatible battery charger system
with integrated power switch for Li-Ion/Li-Polymer
Features
■ Fully integrated solution, with power MOSFET,
reverse blocking diode, sense resistor, and
thermal protection
■ Charges single-cell Li-Ion batteries from
selectable AC adapter or USB Input
■ Programmable charge current up to 1 A in AC
adapter mode
■ Programmable charging current in USB mode
for both high power and low power inputs
■ 4.2 V output voltage with ± 1 % accuracy
■ Linear or quasi-pulse operating mode
■ Closed loop thermal control
■ Programmable end-of-charge current
■ Programmable charge timer
■ (NTC) or (PTC) thermistor interface for battery
temperature monitoring and protection
■ Status outputs to drive LEDs or to interface
with a host processor
■ Small VFQFPN 16-leads package
(3 mm x 3 mm)
VFQFPN16
Applications
■ PDAs, GPS and MP3 players
■ USB powered devices
■ Cellular phones
■ Digital still cameras
■ Standalone chargers
■ Wireless appliances
Table 1. Device summary
Order codes
L6924U
L6924U013TR
Package
VFQFPN16
Packaging
Tube
Tape and reel
May 2008
Rev 1
1/38
www.st.com
38