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BQ25731RSNR The Texas Instruments BQ25731RSNR is an I2C controlled NVDC buck-boost battery charge controller designed for 1 to 5 cell batteries. It supports USB Type-C PD and OTG functionality.
Mfr Part #:

BQ25731RSNR

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments BQ25731RSNR is an I2C controlled NVDC buck-boost battery charge controller designed for 1 to 5 cell batteries. It supports USB Type-C PD and OTG functionality.
✓ Total Stock: 9,731 pcs
$ Price Range: $1.55

BQ25731RSNR Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
8,932 pcs
On Request
8932 pcs On Request 1 On Request On Request On Request On Request On Request
PROSOFT ELECTRONICS ✓
Non-Authorised Inventory information
799 pcs
On Request
799 pcs On Request 1 On Request On Request 23+ 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.

BQ25731RSNR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Battery Chemistry
Battery Pack Voltage
Charge Current
Current
Fault Protection
Interface
Mounting Type
Number of Cells
Operating Temperature
Programmable Features
SVHC Present
Supplier Device Package
Voltage
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BQ25731RSNR Description

Short technical summary and product information.

The BQ25731RSNR from Texas Instruments is an advanced I2C interface battery charge controller. It features an NVDC buck-boost topology, enabling it to efficiently charge 1 to 5 series cells from a wide input voltage range of 3.5V to 26V. This device is designed to support USB Type-C Power Delivery (PD) and USB On-The-Go (OTG) specifications.

 

Key electrical specifications include a maximum charge current of 16.2A and an input voltage limit of up to 26V, with an absolute maximum of 32V. The device offers programmable charge current and voltage, along with fault protection for over current, over temperature, and over voltage conditions. It operates with a programmable switching frequency of 400kHz or 800kHz for optimized efficiency and power density.

 

This battery charger IC is housed in a 32-QFN (4x4) package and is designed for surface mount applications. The operating temperature range is from -40°C to 85°C. Features like Input Current Optimization (ICO) and Pass Through Mode (PTM) enhance system power efficiency and enable fast battery charging.

BQ25731RSNR Quick Information

Product Type: Battery Charger IC
Canonical Name: BQ25731RSNR I2C 1- to 5-Cell Buck-Boost Battery Charge Controller with USB-C PD 3.0 OTG Output
Subcategory: Power Management ICs

BQ25731RSNR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

BQ25731RSNR Estimated Pricing

Qty Low High
1+ $1.55 $1.55

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

BQ25731RSNR Features

  • I2C controlled NVDC buck-boost charger
  • Supports 1 to 5 series battery cells
  • Wide 3.5V to 26V input voltage range
  • Maximum charge current of 16.2A
  • USB-C PD and OTG compatible

BQ25731RSNR Applications

  • Ideal for portable power systems
  • Suitable for USB-C power delivery
  • Enables efficient battery charging
  • Used in multi-cell battery applications

BQ25731RSNR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating input voltage range?

3.5 V to 26 V.

What is the package type?

32-pin WFQFN exposed pad package (4x4mm).

What is the operating temperature range?

-40°C to 85°C.

What battery chemistries are supported?

Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH, SuperCap.

What is the maximum charge current?

16.2 A.

What control interface does the charger use?

I2C.

How many series cells can be charged?

1 to 5 cells.

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