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BQ24040DSQR The Texas Instruments BQ24040DSQR is a highly integrated linear battery charger for Li-Ion and Li-Polymer cells. It supports a 1A charge current and operates from USB or AC adapter inputs.
Mfr Part #:

BQ24040DSQR

Available from 8 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments BQ24040DSQR is a highly integrated linear battery charger for Li-Ion and Li-Polymer cells. It supports a 1A charge current and operates from USB or AC adapter inputs.
✓ Total Stock: 90,397 pcs
$ Price Range: $0.31

BQ24040DSQR Available from 8 distributors

✓ Authorised
✓ Non-Authorised
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.

BQ24040DSQR 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
Input Voltage
Lead Style
Mounting Type
Number of Cells
Operating Temperature
Programmable Features
Supplier Device Package
Supplier Package
Voltage
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BQ24040DSQR Description

Short technical summary and product information.

The BQ24040DSQR from Texas Instruments is a compact, highly integrated linear charger designed for single-cell Li-Ion and Li-Polymer batteries in space-limited portable applications. It can operate from either a USB port or an AC adapter, featuring a high input voltage range with overvoltage protection. The device offers precise charging control with 1% charge voltage accuracy and 10% charge current accuracy.

 

Key protection features include 30V input rating, input overvoltage protection, dynamic power management, thermal regulation at 125°C, and thermal shutdown at 150°C. It also provides OUT short-circuit protection and ISET short detection. The charger operates over the JEITA range via a battery NTC and includes a fixed 10-hour safety timer. Status indication for charging and completion is also integrated.

 

This charger is available in a small 2x2mm 10-WSON package, making it suitable for TWS headsets, smartwatches, wireless speakers, and other portable medical devices. The BQ24040DSQR supports programmable termination and precharge thresholds, as well as programmable fast charge current, offering design flexibility.

BQ24040DSQR Quick Information

Product Type: Battery Charger
Canonical Name: BQ24040DSQR Standalone 1-cell 1-A linear battery charger

BQ24040DSQR Compliance

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

BQ24040DSQR Estimated Pricing

Qty Low High
1+ $0.31 $0.31

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

BQ24040DSQR Features

  • 1A maximum charge current.
  • 1% charge voltage accuracy.
  • 10% charge current accuracy.
  • 125°C thermal regulation.
  • 2x2mm 10-WSON package.

BQ24040DSQR Applications

  • Ideal for TWS headsets.
  • Suitable for smartwatches.
  • Used in wireless speakers.
  • Powers portable medical devices.
  • Supports mobile POS systems.

BQ24040DSQR FAQs

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

The maximum charge current is 1 A.

What is the charge voltage?

The maximum battery charge voltage is 4.2 V.

What is the input voltage range?

The input voltage range is 3.5 V to 6.5 V.

What is the operating temperature range?

The operating temperature range is 0°C to 125°C.

What is the package type?

The package is 10-WSON (2x2) surface mount.

Does it have thermal protection?

Yes, it has thermal regulation at 125°C and thermal shutdown at 150°C.

What is the safety timer?

The safety timer is fixed at 10 hours.

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