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Product attributes Property Value
Manufacturer Texas Instruments
Product Series
Packaging Cut Tape (CT) | Tape & Reel (TR)
Battery Chemistry Lithium Ion/Polymer
Number of Cells 1
Current - Charging Constant - Programmable
Programmable Features Current
Fault Protection Over Current
Charge Current - Max 500mA
Battery Pack Voltage 2.4V ~ 4.6V
Voltage - Supply (Max) 5.25V
Interface I2C
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 20-XFBGA, DSBGA
Supplier Device Package 20-DSBGA
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The BQ21061YFPT is a linear battery charger for single-cell Lithium Ion and Lithium Polymer batteries. It provides a charge current up to 500mA and supports a flexible battery voltage range from 2.4V to 4.6V. This charger includes Over Current protection and is controlled via an I2C interface. It is available in a compact 20-XFBGA, DSBGA package, ideal for space-constrained portable and wearable applications.

  • Versatile Voltage Range: Supports a wide battery voltage range from 2.4V to 4.6V, accommodating various Li-Ion and Li-Poly cells.
  • Ultra-Compact Package: The 20-XFBGA DSBGA package is among the smallest available, perfect for miniaturized devices.
  • Digital Programmability: I2C interface allows for precise control over charging parameters.
  • Safety Features: Integrated Over Current protection helps prevent damage to the battery and system.

Wearable Devices

Ideal for smartwatches and fitness bands with small Li-Ion/Polymer cells, providing a safe 500mA charge current and a compact DSBGA package.

True Wireless Earbuds

Its small footprint and I2C control make it perfect for charging the tiny batteries inside TWS earbuds and their charging cases.

Medical Patches

Suitable for disposable or rechargeable medical patches that require a precise and low-current charging solution for a single Li-Ion cell.

Portable Accessories

Can be used in stylus pens, wireless mice, and other small accessories that need a reliable charging circuit for their internal battery.

Smart Home Sensors

Provides a controlled charging profile for battery-powered environmental sensors, ensuring long-term reliability and safety.

Q: What battery chemistries are supported?
A: It supports Lithium Ion and Lithium Polymer batteries.
Q: How many cells can it charge?
A: It is designed for 1 cell.
Q: What is the maximum charge current?
A: The maximum charge current is 500mA.
Q: What is the battery voltage range?
A: The battery voltage range is 2.4V to 4.6V.
Q: What fault protection is included?
A: It includes Over Current protection.
Q: What interface does it use?
A: It uses an I2C interface.
Base Product Number : BQ21061YFPT
2.4V-4.6V 500mA Battery Charger DSBGA I2C Linear Battery Charger Lithium Ion/Polymer Texas Instruments
Q: What battery chemistries are supported?
A: It supports Lithium Ion and Lithium Polymer batteries.
Q: How many cells can it charge?
A: It is designed for 1 cell.
Q: What is the maximum charge current?
A: The maximum charge current is 500mA.
Q: What is the battery voltage range?
A: The battery voltage range is 2.4V to 4.6V.
Q: What fault protection is included?
A: It includes Over Current protection.
Q: What interface does it use?
A: It uses an I2C interface.