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BQ21040DBVR The BQ21040DBVR is a highly integrated linear battery charger from Texas Instruments, designed for space-limited portable applications. It supports 1-cell Li-Ion/Li-Polymer batteries with a charge current of 800mA.
Mfr Part #:

BQ21040DBVR

Available from 7 distributors
Mfr Name: Texas Instruments
Texas Instruments
The BQ21040DBVR is a highly integrated linear battery charger from Texas Instruments, designed for space-limited portable applications. It supports 1-cell Li-Ion/Li-Polymer batteries with a charge current of 800mA.
✓ Total Stock: 152,103 pcs
$ Price Range: $0.32

BQ21040DBVR Available from 7 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.

BQ21040DBVR 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
Interface
Mounting Type
Number of Cells
Operating Temperature
Supplier Device Package
Supplier Package
Voltage
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BQ21040DBVR Description

Short technical summary and product information.

The Texas Instruments BQ21040DBVR is a compact and highly integrated linear battery charger IC suitable for space-constrained portable devices. It is designed to charge 1-cell Lithium-Ion and Li-Polymer batteries.

 

Key electrical specifications include a maximum charge current of 800mA, an input voltage range from 3.5V to 6.45V, and a battery charge voltage of 4.2V. The device features a fixed 10-hour safety timer and offers charge voltage accuracy of 1% and charge current accuracy of 10%.

 

This charger IC operates within a temperature range of 0°C to 125°C (TJ) and includes protection features such as over-temperature, over-voltage, and short-circuit protection. It utilizes a standalone control interface and is housed in a small SOT-23-6 package, making it ideal for miniaturized designs.

 

The BQ21040DBVR supports input overvoltage protection up to 30V and has a specific input overvoltage protection limit of 6.6V. It also features thermal regulation at 125°C and thermal shutdown at 150°C.

BQ21040DBVR Quick Information

Product Type: Battery Charger
Series: BQ21040
Canonical Name: BQ21040DBVR 1-Cell Li-Ion/Li-Polymer Battery Charger
Subcategory: Power Management

BQ21040DBVR Compliance

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

BQ21040DBVR Estimated Pricing

Qty Low High
1+ $0.32 $0.32

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

BQ21040DBVR Features

  • Charges 1-cell Li-Ion/Li-Polymer batteries.
  • Maximum charge current of 800mA.
  • Input voltage range 3.5V to 6.45V.
  • Compact SOT-23-6 package.
  • Includes over-voltage and short-circuit protection.

BQ21040DBVR Applications

  • Portable consumer electronics and wearables.
  • Bluetooth headsets and wireless earbuds.
  • Handheld medical and industrial devices.
  • Single-cell Li-Ion battery-powered systems.

BQ21040DBVR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum charge current for the BQ21040DBVR?

The maximum charge current is 800mA.

What battery chemistries does the BQ21040DBVR support?

It supports Lithium Ion and Polymer battery chemistries.

What is the operating temperature range?

The operating temperature range is 0°C to 125°C (TJ).

What package type is the BQ21040DBVR available in?

It is available in a SOT-23-6 package.

What are the input voltage limits?

The minimum input voltage is 3.5V and the maximum is 6.45V, with an absolute maximum of 30V.

What fault protection features are included?

It includes over-temperature, over-voltage, and short-circuit protection.

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