The L6924U is a USB compatible battery charger system with integrated power switch from ST company. It is suitable for single-cell Li-Ion batteries and supports AC adapter or USB input. It supports programmable charge current, programmable charge timer, NTC or PTC thermistor interface and so on.
The L6924U is a fully monolithic battery charger designed to safely charge single-cell Li-Ion/Li-Polymer batteries from either a USB power source or an AC adapter. It features a fully integrated solution including a power MOSFET, reverse blocking diode, sense resistor, and thermal protection within a compact VFQFPN16 package.
The device supports programmable charge currents up to 1 A in AC adapter mode and 500 mA in USB mode. It operates in linear or quasi-pulse modes to manage power dissipation and includes closed-loop thermal control. Key features include programmable end-of-charge current, a charge timer, and interfaces for battery temperature monitoring via NTC or PTC thermistors.
| Operating input voltage | 2.5 to 12 V |
|---|---|
| Output voltage | 4.2 V |
| Package type | VFQFPN16 |
It charges single-cell Li-Ion/Li-Polymer batteries.
The device operates with an input voltage ranging from 2.5 V to 12 V.