The LTC4060 is a complete fast charging system for NiMH or NiCd batteries. Just a few external components are needed to design a standalone linear charging system. An external PNP transistor provides charge current that is user programmable with a resistor. A small external capacitor is also needed to provide precharge.
The LTC4060 is a linear fast‑charge controller for NiMH and NiCd batteries that requires only a few external components. It offers programmable charge current, automatic termination, and optional temperature‑qualified charging.
The document includes electrical characteristics, pin descriptions, typical performance curves, package information, and operation diagrams to aid designers in integrating the device into portable consumer electronics, medical equipment, and charging docks.
| Input Supply Voltage Range | 4.5 V to 10 V |
|---|---|
| Programmable Fast Charge Current | 0.4 A to 2 A |
| Sleep Mode Battery Drain | < 1 µA |
| Package Options | 16‑Lead DFN and TSSOP |
The device operates with an input supply voltage from 4.5 V up to 10 V.
Fast charge current is programmed with an external resistor connected to the PROG pin, allowing 0.4 A to 2 A.