L6924D013TR STMicroelectronics

L6924D Battery charger system with integrated power switch for Li-Ion/Li-Polymer Datasheet - production data Applications Handheld devices Digital cameras Standalone chargers USB-powered chargers VFQFPN16 Table 1. Device summary Order code Package Packaging Features L6924D013TR VFQFPN16 Tape and reel Fully integrated solution, with a power MOSFET, reverse blocking diode, sense resistor, and thermal protection Ideal for coke and graphite anode single-cell L -I packs I ON Both linear and quasi-pulse operation Closed loop thermal control USB BUS-compatible Programmable charge current up to 1 A Programmable pre-charge current Programmable end-of-charge current Programmable pre-charge voltage threshold Programmable charge timer Programmable output voltage at 4.1 V and 4.2 V, with 1 % output voltage accuracy (NTC) or (PTC) thermistor interface for battery temperature monitoring and protection Flexible charge process termination Status outputs to drive LEDs or to interface with a host processor Small VFQFPN 16-lead package (3 x 3 mm) January 2019 DocID11908 Rev 11 1/41 This is information on a product in full production. www.st.comContents L6924D Contents 1 Description . 4 2 Pin description and connection diagrams . 5 2.1 Pin description 5 3 Maximum ratings 7 3.1 Absolute maximum ratings . 7 3.2 Thermal data . 7 4 Electrical specifications 8 4.1 Electrical characteristics . 8 5 Block diagram . 10 6 Operation description . 11 6.1 Linear mode . 12 6.2 Quasi-pulse mode 14 7 Application information: charging process . 17 7.1 Charging process flow chart . 17 7.2 Pre-charge current 18 7.3 Pre-charge voltage 18 7.4 Fast charge current . 19 7.5 End-of-charge current . 20 7.6 Recharge flow chart . 21 7.7 Recharge threshold . 21 7.8 Maximum charging time 22 7.9 Termination modes 23 8 Application information: monitoring and protection 24 8.1 NTC thermistor . 24 8.2 Battery absence detection 28 8.3 Status pins 29 2/41 DocID11908 Rev 11