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BQ25121AYFPT The Texas Instruments BQ25121AYFPT is a highly integrated linear battery charger IC designed for wearables and IoT devices. It offers a 300mA charge current and a 2.5V default output from its integrated buck regulator.
Mfr Part #:

BQ25121AYFPT

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments BQ25121AYFPT is a highly integrated linear battery charger IC designed for wearables and IoT devices. It offers a 300mA charge current and a 2.5V default output from its integrated buck regulator.
✓ Total Stock: 2,865 pcs
$ Price Range: $2.23

BQ25121AYFPT Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
2,243 pcs
On Request
2243 pcs On Request 1 On Request On Request On Request On Request On Request
Unit Electronics Co.,Limited ✓
Non-Authorised Inventory information
622 pcs
On Request
622 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

BQ25121AYFPT Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Battery Chemistry
Battery Pack Voltage
Charge Current
Control Interface
Current
Fault Protection
Input Voltage
Interface
Mounting Type
Number of Cells
Operating Temperature
Programmable Features
Supplier Device Package
Supplier Package
Tape & Reel
Voltage
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BQ25121AYFPT Description

Short technical summary and product information.

The BQ25121AYFPT from Texas Instruments is a compact and highly integrated battery charger IC suitable for wearables and IoT applications. It features a 300-mA linear charger with Power Path management, an integrated LDO, and a configurable 300-mA buck regulator with a 2.5-V default output.

 

This device supports Li-Ion/Li-Polymer batteries with a configurable charge voltage range from 3.6 V to 4.65 V and a maximum charge current of 0.3 A. It operates from an input voltage range of 3.4 V to 5.5 V, with an absolute maximum input voltage tolerance of 20 V. The charger includes features such as thermistor monitoring, IC thermal regulation, and input overvoltage protection.

 

Communication and control are handled via an I2C interface, allowing configuration of charge voltage and current, termination current, input current limit, and other parameters. The package is a 25-DSBGA, designed for surface mounting, contributing to a minimal solution footprint with few external components. The operating temperature range is -40°C to 85°C.

BQ25121AYFPT Quick Information

Product Type: Battery Charger
Series: BQ25121A
Canonical Name: BQ25121AYFPT 300-mA linear battery charger with Power Path, integrated LDO and buck converter
Subcategory: Power Management

BQ25121AYFPT Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: No

BQ25121AYFPT Estimated Pricing

Qty Low High
1+ $2.23 $2.23

Estimated market price range - modelled values for guidance only, not live distributor offers.

BQ25121AYFPT Features

  • 300-mA linear battery charger with Power Path.
  • Integrated LDO and configurable buck converter.
  • Supports 1-cell Li-Ion/Li-Polymer batteries.
  • I2C interface for flexible control.
  • Compact 25-DSBGA package for small footprint.

BQ25121AYFPT Applications

  • Ideal for wearable devices.
  • Suitable for IoT applications.
  • Power management solutions.
  • Portable electronic devices.

BQ25121AYFPT FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum charge current for the BQ25121AYFPT?

The maximum charge current for the BQ25121AYFPT is 0.3A.

What is the input voltage range for this battery charger IC?

The BQ25121AYFPT operates from an input voltage range of 3.4V to 5.5V.

What battery chemistries does the BQ25121AYFPT support?

This IC supports Li-Ion/Li-Polymer battery chemistries.

What is the configurable battery charge voltage range?

The battery charge voltage is configurable from 3.6V to 4.65V.

What is the operating temperature range of the BQ25121AYFPT?

The operating temperature range is -40°C to 85°C.

How is the BQ25121AYFPT controlled?

Control is managed via an I2C interface.

What is the default output voltage of the integrated buck regulator?

The integrated buck regulator has a default output voltage of 2.5V.

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