1.1A linear charger for single-cell Li-Ion packs
The MCP73834-GPI/MF is a constant-current, constant-voltage linear charger for single-cell Lithium Ion or Lithium Polymer batteries, delivering up to 1.1 A of charge current with a 4.2 V regulation voltage. The charge current is programmable via an external resistor, giving the designer control over the charge rate to match the cell capacity and thermal budget. Operating from -40°C to 85°C, it suits battery-powered equipment deployed in industrial or outdoor environments where ambient temperature swings are common.
Package and board-fit for DFN assembly
Housed in a 10-VFDFN Exposed Pad package (3x3 mm body, supplier device package 10-DFN), the part requires surface-mount assembly with the exposed pad soldered to a thermal land on the PCB to dissipate heat from the linear pass element. The tube packaging is standard for prototype and low-volume builds; for reel quantities check the ordering options.
Active lifecycle and compliance status
The part carries over-temperature fault protection, which shuts down the charger if the die temperature exceeds the safe limit — a safeguard against runaway charging in a fault condition.