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HomeProductsIntegrated Circuits (ICs)PMIC - Battery ChargersBQ21040DBVT
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BQ21040DBVT - Texas Instruments

Manufacturer Part Number
BQ21040DBVT
Manufacturer
Texas Instruments
Allelco Part Number
32D-BQ21040DBVT
Warranty
1 Year Allelco Warranty - Find out more
Parts Description
IC BATT CHG LI-ION 1CELL SOT23-6
Package
SOT-23-6
Data sheet
1.BQ21040DBVT.pdf ...

PCN Design/Specification

Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 22603
  • Unit Price: $0.218
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
5+ $0.218 $1.09
50+ $0.177 $8.85
250+ $0.16 $40.00
500+ $0.138 $69.00
2500+ $0.128 $320.00
5000+ $0.122 $610.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.
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Our certification

Specifications

BQ21040DBVT Tech Specifications
Texas Instruments - BQ21040DBVT technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - BQ21040DBVT

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Supply (Max) 6.45V  
Supplier Device Package SOT-23-6  
Series -  
Programmable Features -  
Package / Case SOT-23-6  
Package Tape & Reel (TR)  
Operating Temperature 0°C ~ 125°C (TJ)  
Number of Cells 1  
Product Attribute Attribute Value  
Mounting Type Surface Mount  
Interface USB  
Fault Protection Over Temperature, Over Voltage, Short Circuit  
Current - Charging Constant - Programmable  
Charge Current - Max 800mA  
Battery Pack Voltage 4.2V  
Battery Chemistry Lithium Ion/Polymer  
Base Product Number BQ21040  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

BQ21040DBVT

Manufacturer

Texas Instruments

Introduction

The BQ21040DBVT is a compact, high-efficiency, lithium-ion/polymer battery charger designed for a wide range of portable applications. It is provided in a small SOT-23-6 package.

Product Features and Performance

Designed for Lithium Ion/Polymer batteries

Supports a single cell configuration

Constant charge current up to 800mA

Offers Over Temperature, Over Voltage, and Short Circuit protection

Programmable charging parameters are not supported to simplify the design

Operates effectively within a supply voltage range of up to 6.45V

Features USB interface for charging

Can operate within a wide temperature range of 0°C to 125°C

Product Advantages

High efficiency charging extends battery life

Compact SOT-23-6 package saves board space

Integrated fault protection enhances safety

Ease of integration with USB power sources

Wide operating temperature range suitable for various environments

Key Technical Parameters

Battery Chemistry: Lithium Ion/Polymer

Number of Cells: 1

Constant Charging Current: Programmable up to 800mA

Maximum Charge Current: 800mA

Battery Pack Voltage: 4.2V

Voltage Supply (Max): 6.45V

Operating Temperature Range: 0°C ~ 125°C (TJ)

Quality and Safety Features

Over Temperature protection

Over Voltage protection

Short Circuit protection

Compatibility

Suitable for use with single-cell lithium-ion or polymer batteries

USB interface enables compatibility with various USB power sources

Application Areas

Portable Consumer Electronics

Handheld Devices

Wireless Headsets

Small IoT Devices

Product Lifecycle

The product status is Active, indicating ongoing production and availability

No current indication of nearing discontinuation, ensuring continued support and availability

Several Key Reasons to Choose This Product

Texas Instruments' reliability and support

High charging efficiency for extended battery life

Compact and space-saving design

Integrated protection features for enhanced safety

Broad application versatility due to wide operation temperature and compatibility with common power sources

Active product lifecycle status ensures long-term availability and support

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments BQ21040DBVT

Product Attribute BQ21040DBVR BQ21080YBGR BQ21062YFPT BQ21061YFPT
Part Number BQ21040DBVR BQ21080YBGR BQ21062YFPT BQ21061YFPT
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Current - Charging - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Interface - - - -
Voltage - Supply (Max) - - - -
Series - - - -
Number of Cells - - - -
Charge Current - Max - - - -
Battery Pack Voltage - - - -
Fault Protection - - - -
Battery Chemistry - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Programmable Features - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)

BQ21040DBVT Datasheet PDF

Download BQ21040DBVT pdf datasheets and Texas Instruments documentation for BQ21040DBVT - Texas Instruments.

PCN Design/Specification
Cylindrical Battery Holders.pdf
HTML Datasheet
Cylindrical Battery Holders.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2024

    I had a great experience purchasing items from Allelcoelec, I recommend

  • Uri ***al
    Jun 19, 2024

    Good comunication,
    Transpnt regarding the process and price.

  • Yaqu***l Ali
    Jun 19, 2024

    Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.

  • Lea ***
    Jun 19, 2024

    Morrey was very helpful and right on top of things!
    He replied quickly to my RFQ. He was very courteous and professional.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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BQ21040DBVT Image

BQ21040DBVT

Texas Instruments
32D-BQ21040DBVT

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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