About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsIntegrated Circuits (ICs)PMIC - Battery ChargersBQ25611DRTWT
BQ25611DRTWT Image
BQ25611DRTWT Image - 1BQ25611DRTWT Image - 2
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

BQ25611DRTWT - Texas Instruments

Manufacturer Part Number
BQ25611DRTWT
Manufacturer
Texas Instruments
Allelco Part Number
32D-BQ25611DRTWT
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
12,400 pcs available, New & Original
Parts Description
IC BATT CHG LI-ION 1CELL 24WQFN
Package
24-WQFN (4x4)
Data sheet
BQ25611DRTWT.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 12400
  • Unit Price: $1.616
  • Subtotal: $0.00

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

Quantity Unit Price Ext. Price
1+ $1.616 $1.62
10+ $1.502 $15.02
30+ $1.434 $43.02
250+ $1.366 $341.50
500+ $1.334 $667.00
1000+ $1.321 $1,321.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

BQ25611DRTWT Tech Specifications
Texas Instruments - BQ25611DRTWT technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - BQ25611DRTWT

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply (Max) 13.5V
Supplier Device Package 24-WQFN (4x4)
Series -
Programmable Features Current, Timer
Package / Case 24-WFQFN Exposed Pad
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 85°C (TA)
Number of Cells 1
Product Attribute Attribute Value
Mounting Type Surface Mount
Interface I²C
Fault Protection Over Current, Over Temperature, Over Voltage
Current - Charging Constant - Programmable
Charge Current - Max 3.2A
Battery Pack Voltage 4.6V ~ 5.15V
Battery Chemistry Lithium Ion/Polymer
Base Product Number BQ25611

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

BQ25611DRTWT Image
BQ25611DRTWT (1)

Manufacturer Part Number

BQ25611DRTWT

Manufacturer

Texas Instruments

Introduction

Integrated Circuit (IC) for battery charging applications

Part of the PMIC (Power Management Integrated Circuit) product line

Product Features and Performance

Supports 1-cell Li-ion/Li-polymer batteries

Programmable charge current up to 3.2A

Constant current charging with programmable charge current

Protections against over-current, over-temperature, and over-voltage

Wide operating voltage range (4.6V to 5.15V)

Operating temperature range of -40°C to 85°C

Product Advantages

Efficient and reliable battery charging

Programmable features for customized charging profiles

Comprehensive protection features to ensure safe operation

Wide temperature range for use in various environments

BQ25611DRTWT Image
BQ25611DRTWT (2)

Key Technical Parameters

Battery pack voltage: 4.6V to 5.15V

Charge current: Up to 3.2A

Programmable charge current and timer

Input voltage range: Up to 13.5V

Quality and Safety Features

RoHS3 compliant

Over-current, over-temperature, and over-voltage protection

Compatibility

Suitable for 1-cell Li-ion/Li-polymer battery packs

Application Areas

Portable electronics

Power tools

Battery-powered devices

Product Lifecycle

Currently available

No information on discontinuation or replacements

Key Reasons to Choose This Product

Efficient and programmable battery charging

Comprehensive protection features for safe operation

Wide temperature range for versatile applications

Proven reliability and performance from Texas Instruments

Frequently Asked Questions(FAQ)

How does the BQ25611DRTWT handle thermal management during high-current charging, and what design considerations are necessary to prevent overheating in compact PCB layouts?
The BQ25611DRTWT integrates over-temperature protection with a programmable thermal regulation loop that reduces charging current when junction temperature exceeds safe thresholds. During maximum 3.2A charging, power dissipation can reach approximately 4–5W depending on input voltage and battery state. In compact designs using 24-WQFN (4x4) packaging, thermal vias under the exposed pad are essential to conduct heat to inner ground planes. Without adequate copper area or thermal relief, localized heating may trigger false thermal shutdowns even if the IC itself remains within -40°C to 85°C ambient limits. Engineers should simulate thermal profiles using IBIS-AMI models or empirical testing at full charge current.
What is the significance of the 4.6V to 5.15V battery pack voltage range for the BQ25611DRTWT, and how does this affect Li-Ion cell configuration in space-constrained applications?
The BQ25611DRTWT supports a regulated battery pack voltage between 4.6V and 5.15V, which accommodates standard Li-Ion chemistry with a nominal 3.7V per cell. This range allows operation near the upper safety limit of single-cell configurations while providing headroom for voltage droop under load. For applications requiring tight form factors—such as wearables or IoT nodes—this eliminates the need for boost converters to maintain system voltage during discharge cycles. However, it necessitates precise charge termination control via I²C to avoid exceeding 4.2V per cell, as exceeding this threshold risks accelerated degradation or safety hazards.
How do you programmatically configure the BQ25611DRTWT’s charge current and timer settings, and what trade-offs exist between fast charging and battery longevity?
Charge current up to 3.2A and termination timers are configured through the I²C interface by writing to specific register addresses defined in the device datasheet. For example, setting the CHG_CURRENT[6:0] bits determines the constant-current phase magnitude. While higher currents reduce total charge time (e.g., 2Ah battery at 3.2A completes in ~37.5 minutes), they increase stress on electrodes and generate more heat, potentially reducing cycle life by 15–30% compared to slower 1C rates. Designers must balance user expectations against long-term reliability, especially in battery-backed systems where calendar aging is critical.
Can the BQ25611DRTWT operate directly from unregulated USB ports without additional pre-regulation circuitry, and what input voltage constraints apply?
Yes, the BQ25611DRTWT accepts input voltages up to 13.5V, making it compatible with both regulated wall adapters and unregulated USB sources such as 5V rails with transient spikes. However, input capacitors must be sized to suppress ringing above 6V during hot-plug events, and reverse polarity protection is not internal—so external Schottky diodes or MOSFET-based solutions are recommended. The I²C interface remains functional across this wide range, enabling dynamic charging profile adjustment based on source capability.
How does fault detection work in the BQ25611DRTWT, and what actions occur during an over-voltage event on the battery side?
The device monitors battery voltage continuously and disables charging if VBAT exceeds 4.4V (typical) with hysteresis to prevent oscillation. Upon detecting over-voltage, the charger enters a fault state and asserts a STAT pin signal, which can be polled via I²C or monitored externally. After the condition clears, recharging resumes only after a soft-start sequence initiated by software reset or power cycling. This safeguards against overcharged cells but requires careful coordination with system-level brownout logic to avoid unintended shutdowns during legitimate voltage transients.
What role does the I²C interface play in optimizing the BQ25611DRTWT’s performance, and how can it be leveraged in multi-battery architectures?
The I²C interface enables real-time monitoring and dynamic adjustment of key parameters like charge current, termination thresholds, and fault status. In multi-cell or stacked battery systems, multiple BQ25611DRTWT devices can share the same bus address by modifying hardware pins (if available) or using separate buses, allowing centralized control from a microcontroller. This facilitates adaptive charging strategies—for instance, reducing current when one battery reaches 90% SOC faster than others—thereby improving pack utilization and extending overall system runtime.
How does moisture sensitivity level 1 (MSL1) classification impact manufacturing handling of the BQ25611DRTWT in mass production environments?
MSL1 indicates unlimited shelf life under storage conditions below 30°C/60% RH, meaning the BQ25611DRTWT can withstand prolonged exposure to ambient humidity without requiring special dry-room storage or baking prior to reflow. This simplifies supply chain logistics and reduces manufacturing overhead compared to higher MSL components. However, operators should still follow standard ESD protocols during handling due to the sensitive CMOS input stages, particularly around the I²C lines and EN pins.
Why might someone choose the BQ25611DRTWT over discrete linear chargers for high-volume consumer electronics, and what cost-performance advantages emerge?
Integrated PMICs like the BQ25611DRTWT consolidate functions—including power path management, thermal foldback, and digital configurability—into a single 24-pin package, eliminating discrete resistors, op-amps, and protection circuits required in linear approaches. This reduces BOM count by 30–40%, lowers PCB real estate usage, and improves consistency across production batches. Although unit cost is higher than basic linear regulators, the total system cost often decreases due to simplified layout, fewer test points, and reduced failure modes in field deployments.
What precautions should be taken when using the BQ25611DRTWT with non-standard Li-Ion cells, such as those with extended voltage tolerances or custom chemistries?
The BQ25611DRTWT is calibrated for standard 4.2V termination voltage; using cells rated for 4.35V or higher may bypass internal safety mechanisms unless external over-voltage detection is added. Similarly, low-impedance cells with rapid self-discharge may cause frequent false terminations. Always validate charging curves experimentally under worst-case conditions—particularly temperature extremes—and consider adding coulomb counting or fuel gauging ICs alongside the charger for accurate state-of-charge estimation in non-standard configurations.
How does the BQ25611DRTWT compare to TI’s BQ25601 in terms of integration level and application suitability for ultra-low-power edge devices?
Unlike the BQ25601, which offers similar functionality in a smaller WSON package but lacks programmable charge current beyond fixed levels, the BQ25611DRTWT provides full I²C-programmable current (up to 3.2A), timer settings, and advanced fault reporting. This flexibility makes it better suited for adaptive charging in variable-load environments common in modern edge devices. However, the BQ25601 consumes marginally less quiescent current (~1µA vs ~3µA), so for battery-powered sensors with infrequent wake-ups, the trade-off may favor simplicity over configurability.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments BQ25611DRTWT

Product Attribute BQ25611DRTWR BQ25611RTWT BQ25616RTWT BQ25611RTWR
Part Number BQ25611DRTWR BQ25611RTWT BQ25616RTWT BQ25611RTWR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Mounting Type - Surface Mount Through Hole Surface Mount
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Programmable Features - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Battery Chemistry - - - -
Interface - - - -
Battery Pack Voltage - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Current - Charging - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Fault Protection - - - -
Number of Cells - - - -
Charge Current - Max - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Voltage - Supply (Max) - - - -

BQ25611DRTWT Datasheet PDF

Download BQ25611DRTWT pdf datasheets and Texas Instruments documentation for BQ25611DRTWT - Texas Instruments.

PCN Design/Specification
BQ25611D 17/Sep/2020.pdf BQ25611D 23/Jun/2020.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • 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.

Write a Review

Your Email address will not be published.

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.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
BQ25611DRTWT Image

BQ25611DRTWT

Texas Instruments
32D-BQ25611DRTWT

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

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB