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Product attributes Property Value
Manufacturer Analog Devices Inc./Maxim Integrated
Product Series
Packaging Tray |
Battery Chemistry Lithium Ion
Number of Cells 1
Current - Charging Constant - Programmable
Programmable Features Current
Fault Protection Over Current, Over Temperature, Over Voltage, Reverse Battery, Short Circuit
Charge Current - Max 3.15A
Battery Pack Voltage 4.2V
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 MAX77751DEFG+ 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 4.2V 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 4.2V regulation is standard for many Li-Ion cells, and the comprehensive protection suite ensures safe operation.

Portable Power Banks

Implement high-current USB charging for 1-cell Li-Ion power banks. The 4.2V 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 MAX77751DEFG+ 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 4.2V.
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 : MAX77751DEFG
1 Cell 24-PowerUFQFN 3.15A 4.2V Battery Charger Lithium Ion USB Charger
Q: What battery chemistry does the MAX77751DEFG+ 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 4.2V.
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.