This data sheet introduces the features and characteristics of the MCP73841/2/3/4 series products, including constant voltage, constant current regulation, deep discharge preconditioning, automatic charge termination control, continuous battery temperature monitoring, and automatic power-down when the input power is removed.
The MCP73841/2/3/4 family are linear charge‑management controllers designed for space‑limited, cost‑sensitive applications. The MCP73841 and MCP73842 provide high‑accuracy voltage regulation, programmable charge current, safety timers, temperature monitoring and status indication in a 10‑pin MSOP package, while the MCP73843 and MCP73844 offer the same features (except temperature monitoring) in an 8‑pin MSOP package.
Typical applications include lithium‑ion/polymer battery chargers for personal data assistants, cellular phones, hand‑held instruments, cradle chargers, digital cameras and MP3 players. The datasheet details electrical characteristics, package options, performance curves and recommended usage guidelines.
| Supply Input Voltage (MCP73841/43) | 4.5 V to 12 V |
|---|---|
| Supply Input Voltage (MCP73842/44) | 8.7 V to 12 V |
| Preset Voltage Regulation Options | 4.1 V, 4.2 V (single‑cell) / 8.2 V, 8.4 V (dual‑cell) |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Types | MSOP‑10 (MCP73841, MCP73842) / MSOP‑8 (MCP73843, MCP73844) |
| Sink Current (Status Indicator) | 4 mA to 12 mA |
They operate from –40 °C up to +85 °C.
The MCP73843 is offered in an 8‑pin MSOP package.
The dual‑cell devices require an input voltage between 8.7 V and 12 V.