STEVAL-ISA076V1 Battery charger demonstration board with integrated power switch for Li-Ion/Li-Polymer batteries based on the L6924D Data brief 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 STEVAL-ISA076V1 threshold Programmable charge timer When a current-limited adapter is used, the device can operate in quasi-pulse mode, Multifunction pin for flexible charge process dramatically reducing power dissipation. 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 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 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4 2 * 2 /0 . ( * * 2 34 34 * 2 , 02 02 2 2 %. ). 44 ( %& 4( 2 2 Schematic diagram STEVAL-ISA076V1 1 Schematic diagram Figure 1. Internal schematic 92% .4 2 4 5 % / 3 . /3 2 0 ) ) 6 6 6 % 2 0 ) 2 2 6 2 * 6 . 6R F E 3 6 4 3.3 6 , 2 , 2 % - 6 2/4 Doc ID 18119 Rev 2 ).