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Analog Devices MAX17702 Step-Down Lead Acid Battery Charger Controller is a high-efficiency, high-voltage, synchronous, step-down, Himalaya lead-acid (Pb-acid) battery charger controller designed to operate over an input-voltage range of 4.5V to 60V.
The Analog Devices MAX17702 Lead Acid Battery Charger Controller operates over a wide -40°C to +125°C temperature range and provides a complete charging solution for Pb-acid batteries with a ±4% precise constant-current regulation. The output voltage is programmable from 1.25V up to (VDCIN – 2.1V) with ±1% regulation accuracy. The device uses an external nMOSFET to provide input supply-side short-circuit protection, preventing battery discharge.
The MAX17702 charges the battery in constant current (CC), constant absorption voltage (CV) states, and enters floating CV state after detecting taper current threshold or absorption CV timer timeout in Absorption CV state. A deep discharge detection comparator enables the detection and preconditioning of deeply discharged batteries.
The MAX17702 is housed in a 24-pin 4mm x 4mm TQFN package with an exposed pad.
