The MAX846AEEE+ is a cost-saving, multichemistry battery-charger in 16 pin QSOP package. This integrated system allows different battery chemistries (Li-Ion, NiMH or NiCd cells) to be charged using one circuit.MAX846A is a stand-alone, current-limited float voltage source that charges Li-Ion cells. It can also be paired up with a low-cost microcontroller (μC) to build a universal charger capable of charging Li-Ion, NiMH and NiCd cells. An internal 0.5%-accurate reference allows safe charging of Li-Ion cells that require tight voltage accuracy. It has a built-in 1%, 3.3V, 20mA linear regulator capable of powering the μC and providing a reference for the μC's analogue to digital converters. Typical applications include battery packs and hand held instruments.
- Independent voltage and current loops
- ±0.5% internal reference for Li-ion cells
- Built-in μc reset
- Controls low cost external pnp transistor or P-channel mosfet
- Charging current-monitor output
- Less than 1μA battery drain when off
- Operating temperature range from -40°C to 85°C
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