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Product attributes Property Value
Manufacturer Analog Devices Inc./Maxim Integrated
Product Series
Packaging Factory | Tray
Battery Chemistry Lithium Ion
Number of Cells 1
Current - Charging Constant - Programmable
Programmable Features Current, Timer, Voltage
Fault Protection Over Current, Over Temperature, Over Voltage, Reverse Battery, Short Circuit
Charge Current - Max 3.15A
Battery Pack Voltage 5.1V
Voltage - Supply (Max) 13.7V
Interface USB
Operating Temperature -40°C ~ 85°C
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 24-PowerUFQFN
Supplier Device Package 24-FC2QFN (3x3)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The MAX77751BEFG+ is a USB-interface battery charger IC for single-cell Lithium Ion batteries. It delivers a high charge current of up to 3.15A with a 5.1V regulation voltage. The device integrates comprehensive fault protection including over current, over temperature, over voltage, reverse battery, and short circuit. It operates from -40°C to 85°C and is available in a 24-PowerUFQFN package, making it ideal for fast-charging portable electronics.

  • High 3.15A charge current enables rapid charging of single-cell Li-Ion devices.
  • Comprehensive protection (over current, over voltage, reverse battery, short circuit) ensures safe and reliable operation.
  • USB interface simplifies connection to standard power sources.
  • Wide -40°C to 85°C temperature range supports diverse applications.

Smartphones and Tablets

Charge single-cell Lithium Ion batteries at up to 3.15A via USB for fast replenishment. The comprehensive protection suite (over current, over voltage, short circuit) ensures safe operation in consumer handheld devices.

Portable Power Banks

Implement high-current USB charging for 1-cell Li-Ion power banks. The 5.1V regulation and USB interface simplify integration with standard charging adapters.

Wireless Earbuds Charging Cases

Charge the internal single-cell Li-Ion battery quickly through USB. The compact 24-PowerUFQFN package fits the tight PCB constraints of small charging cases.

Handheld Gaming Consoles

Provide rapid 3.15A charging for portable gaming devices. The -40°C to 85°C operating range supports use in varied ambient conditions.

Wearable Devices

Charge single-cell Li-Ion batteries in smartwatches and fitness trackers. The robust fault protection prevents damage from reverse battery insertion or over-voltage events.

Q: What battery chemistry does the MAX77751BEFG+ support?
A: It is designed for Lithium Ion batteries.
Q: How many cells can it charge?
A: It supports 1 cell.
Q: What is the maximum charge current?
A: The maximum charge current is 3.15A.
Q: What is the battery voltage?
A: The battery regulation voltage is 5.1V.
Q: What interface does it use?
A: It uses a USB interface.
Q: What fault protections are included?
A: It includes Over Current, Over Temperature, Over Voltage, Reverse Battery, and Short Circuit protection.
Base Product Number : MAX77751BEFG
1 Cell 24-PowerUFQFN 3.15A 5.1V Battery Charger Lithium Ion USB Charger
Q: What battery chemistry does the MAX77751BEFG+ support?
A: It is designed for Lithium Ion batteries.
Q: How many cells can it charge?
A: It supports 1 cell.
Q: What is the maximum charge current?
A: The maximum charge current is 3.15A.
Q: What is the battery voltage?
A: The battery regulation voltage is 5.1V.
Q: What interface does it use?
A: It uses a USB interface.
Q: What fault protections are included?
A: It includes Over Current, Over Temperature, Over Voltage, Reverse Battery, and Short Circuit protection.