L6924D [STMicroelectronics]

The L6924D is a fully monolithic battery charger for single-cell Li-Ion/Polymer battery packs, ideal for space-limited applications like handheld devices and digital cameras. It integrates power MOSFET, reverse blocking diode, and sense resistor in a small VFQFPN16 package (3 x 3 mm). It supports both linear and quasi-pulse operation with closed-loop thermal control, USB BUS compatibility, and programmable parameters including charge current up to 1 A, pre-charge current, end-of-charge current, pre-charge voltage threshold, charge timer, and output voltage (4.1 V or 4.2 V with ±1% accuracy). It features NTC/PTC thermistor interface for temperature monitoring, flexible charge termination, status outputs for LEDs or host processor interface, and battery presence detection.