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Battery charger demonstration board with integrated Li-ion/Li-polymer power switch based on L6924D

STEVAL-ISA076V1

Overview

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.
When a current-limited adapter is used, the device can operate in quasi-pulse mode, dramatically reducing power dissipation.

Main features

Operating input voltage up to 12 V
Fully integrated solution with power MOSFET, reverse blocking diode, sense resistor, and thermal control
Both linear and quasi-pulse operation
Programmable charge current both in fast charge (up to 1 A) and in pre-charge mode
Selectable 4.1 V and 4.2 V output voltage (±1% accuracy)
Programmable termination current
Programmable pre-charge mode voltage threshold

Programmable charge timer
Multifunction pin for flexible charge process termination
Status outputs to drive LEDs or host processor interface
Battery absence detection
Closed loop thermal control
NTC or PTC thermistor interface for battery temperature monitoring and protection
RoHS compliant

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-07-02 08:52:43

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