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STEVAL-ISA076V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Both linear and quasi-pulse operation | |||
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STEVAL-ISA076V1
Battery charger demonstration board with integrated power switch
for Li-Ion/Li-Polymer batteries based on the L6924D
Data brief
Features
â Operating input voltage up to 12 V
â Fully integrated solution with power MOSFET,
reverse blocking diode, sense resistor, and
thermal control
â Both linear and quasi-pulse operation
â Programmable charge current both in fast
charge (up to 1 A) and in pre-charge mode
â Selectable 4.1 V and 4.2 V output voltage (±1%
accuracy)
â Programmable termination current
â Programmable pre-charge mode voltage
threshold
â Programmable charge timer
â Multifunction pin for flexible charge process
termination
â Status outputs to drive LEDs or host processor
interface
â Battery absence detection
â Closed loop thermal control
â NTC or PTC thermistor interface for battery
temperature monitoring and protection
â RoHS compliant
STEVAL-ISA076V1
When a current-limited adapter is used, the
device can operate in quasi-pulse mode,
dramatically reducing power dissipation.
Description
The STEVAL-ISA076V1 demonstration board is
based on the L6924D battery charger system with
integrated power switch. The L6924D device is a
fully monolithic battery charger dedicated to
single-cell lithium-ion polymer (Li-Pol) battery
packs, and is the ideal solution for space-limited
applications such as PDAs, handheld equipment,
cellular phones, and digital cameras.
When an external voltage-regulated wall adapter
is used, the L6924D works in linear mode, and
charges the battery using a constant
current/constant voltage (CC/CV) profile.
May 2011
Doc ID 18119 Rev 2
For further information contact your local STMicroelectronics sales office.
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www.st.com
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