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The MAX77757JEFG420 is a standalone 3.15A charger with integrated USB Type-C® CC detection that meets the JEITA specification and supports reverse boost function. The fast charging current is easily configurable via a resistor.The MAX77757JEFG420 has an input voltage range of 4.5V to 13.7V and a maximum input current limit of 3A.The IC also implements an Adaptive Input Current Limit (AICL) function, which regulates the input voltage by lowering the input current to prevent voltage collapse or foldback in weak adapters.

Benefits and Features

Protection up to 16V

Maximum input operating voltage: 13.7V

Maximum charge current: 3.15A

6A discharge current protection

No firmware or communication intervention required

Integrated CC detection to support USB Type-C

Integrated BC1.2 detection to support legacy SDP, DCP, CDP and DCD timeouts

Integrated USB detection to support common proprietary charger types

Automatic input current limit configuration

Input voltage regulation with Adaptive Input Current Limit (AICL)

Reverse boost capability up to 5.1V, 1.5A

Terminal Voltage

4.1V to 4.5V for Li-ion and Li-polymer batteries

3.6V/3.7V for lithium iron phosphate batteries

Safety

Charging safety timer

NTC thermistor meets JEITA requirements (MAX77757J)

Stop charging by hot/cold method using NTC thermistor (MAX77757H)

Thermal shutdown

All functions are pin-controlled

Fast charge current configurable via resistor

Enable and disable reverse boost via ENBST pin

Charging status indication via STAT pin

Normal input power via INOKB pin

Disable charging via THM pin

Integrated Power Path

Integrated battery true shutdown FET

3mm x 3mm, 24-pin FC2QFN package

Applications

Mobile payment terminals of sale (mPOS)

Portable medical devices

Wireless headsets

GPS trackers

Wearable device charging cradle

Mobile Power Supply

Mobile Router

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