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Product attributes Property Value
Manufacturer Analog Devices Inc./Maxim Integrated
Product Series
Packaging Factory | Cut Tape (CT)
Battery Chemistry Lithium Ion/Polymer
Number of Cells 1
Current - Charging Constant - Programmable
Programmable Features Current, Voltage
Fault Protection Over Temperature
Charge Current - Max 300mA
Battery Pack Voltage 4.6V (Max)
Voltage - Supply (Max) 5.5V
Interface GPIO, I2C
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 30-WFBGA, WLBGA
Supplier Device Package 30-WLP (2.75x2.15)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The MAX77651BEWVA+T from Analog Devices is a highly integrated battery charger for single-cell Lithium Ion/Polymer batteries. It provides a charge current of up to 300mA and supports a maximum battery voltage of 4.6V. Featuring GPIO and I2C interfaces for flexible control, it also includes Over Temperature protection for enhanced safety. This charger is available in a space-saving 30-WFBGA package and operates over an industrial temperature range of -40°C to 85°C.

  • Advanced Interface Options: The inclusion of both GPIO and I2C interfaces allows for sophisticated system integration, status monitoring, and dynamic control.
  • Compact and Lightweight: The 30-WFBGA package is ideal for space-constrained portable and wearable electronics.
  • Enhanced Safety: Integrated Over Temperature protection ensures safe operation, which is critical for body-worn or closely packed devices.
  • Wide Operating Range: Rated for -40°C to 85°C, it can be used in a variety of environments, from indoor consumer goods to more demanding outdoor portable equipment.

Wearable Devices

The compact 30-WFBGA package and low 300mA charge current make the MAX77651BEWVA+T perfect for small wearables like smartwatches and fitness bands that use single-cell Li-Poly batteries.

Hearing Aids

With its tiny footprint and I2C interface for fine control, this charger is well-suited for advanced hearing aids requiring safe, low-current charging of a single Li-Ion cell.

Portable Medical Sensors

Patient-worn sensors benefit from the integrated Over Temperature protection, ensuring safe charging of Li-Polymer batteries in continuous contact with the body.

IoT Nodes

Wireless IoT sensors often run on small single-cell batteries. The GPIO and I2C interfaces allow for flexible system integration and status monitoring in smart building applications.

Compact Consumer Electronics

Devices like wireless earbuds and smart pens can leverage the small size and efficient charging profile of this IC to maintain a slim form factor.

Q: What battery chemistry does the MAX77651BEWVA+T support?
A: It is designed for Lithium Ion/Polymer batteries.
Q: How many cells can it charge?
A: It supports a single-cell (1) configuration.
Q: What is the maximum charge current?
A: The maximum charge current is 300mA.
Q: What is the maximum battery voltage?
A: The maximum battery pack voltage is 4.6V.
Q: What fault protection is included?
A: It includes Over Temperature protection.
Q: What control interfaces are available?
A: It features GPIO and I2C interfaces for control and monitoring.
Base Product Number : MAX77651BEWVA
1-Cell 30-WFBGA 300mA 4.6V Battery Charger GPIO I2C Lithium Ion/Polymer Charger MAX77651 Maxim Integrated
Q: What battery chemistry does the MAX77651BEWVA+T support?
A: It is designed for Lithium Ion/Polymer batteries.
Q: How many cells can it charge?
A: It supports a single-cell (1) configuration.
Q: What is the maximum charge current?
A: The maximum charge current is 300mA.
Q: What is the maximum battery voltage?
A: The maximum battery pack voltage is 4.6V.
Q: What fault protection is included?
A: It includes Over Temperature protection.
Q: What control interfaces are available?
A: It features GPIO and I2C interfaces for control and monitoring.