L6924D Datasheet, PDF (1/5 Pages) STMicroelectronics – Li-Ion/Li-Polymer Battery Charger System with Integrated Power Switch

L6924D
Li-Ion/Li-Polymer Battery Charger System with
Integrated Power Switch
DATA BRIEF
Features
■ Fully integrated solution with Power pass
MOSFET, reverse blocking diode, sense
resistor and thermal protection
■ Ideal for Coke and Graphite anode Single cell
Li-Ion packs
■ Both Linear and Quasi Pulse operation
■ Programmable charge current
■ Programmable Pre-Charge voltage threshold
■ ±1% output voltage accuracy
■ Status outputs to drive LEDs or Host Processor
interface
■ Programmable charge timer and charge end
current
■ Small VFQFPN package (3mm x 3mm)
■ Low thermal resistance: 80°C/W
■ Charge current thermal loop
Applications
■ PDA's
■ Handheld Devices
■ Cellular Phones
■ Digital Cameras
■ Stand-alone Chargers
■ Usb Powered Chargers
■ Mp3 Players
VFQFPN 16
Description
The L6924D is a fully monolithic linear battery
charger, ideal for coke and graphite anode single
cell Li-Ion packs that allows a charge
management system in a very compact
application.
It is the ideal way for space limited applications,
like PDA's, hand held, cellular phones and digital
cameras. It is realized in BCD6 technology and, in
a small VFQFPN 3x3 16 pins package, that
integrates all the power elements (the Power pass
MOSFET, the reverse blocking diode and the
sense resistor).
The maximum application flexibility of the L6924D,
is given by the possibility of programming all the
features (like pre-charging current, charging
current, the pre-charging voltage threshold, the
end of charge current threshold and the charging
time). When a real basic external wall adapter is
used, the L6924D works in Linear Mode and
charges the battery in a CC/CV (Constant current/
Constant voltage) profile.
Order codes
Part number
L6924D
Package
VFQFPN 16
Packing
Tube
July 2005
CD00061067
For further information contact your local STMicroelectronics sales office.
Rev 1
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www.st.com
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