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HomeProductsIntegrated Circuits (ICs)PMIC - Battery ChargersBQ25606RGER
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BQ25606RGER - Texas Instruments

Manufacturer Part Number
BQ25606RGER
Manufacturer
Texas Instruments
Allelco Part Number
32D-BQ25606RGER
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
21,246 pcs available, New & Original
Parts Description
IC BATT CHG LI-ION 1CELL 24VQFN
Package
24-VQFN (4x4)
Data sheet
BQ25606RGER.pdf

HTML Datasheet

BQ25606 Datasheet.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 21246
  • Unit Price: $0.451
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.451 $0.45
10+ $0.369 $3.69
30+ $0.327 $9.81
100+ $0.287 $28.70
500+ $0.262 $131.00
1000+ $0.249 $249.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

BQ25606RGER Tech Specifications
Texas Instruments - BQ25606RGER technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - BQ25606RGER

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply (Max) 13.5V
Supplier Device Package 24-VQFN (4x4)
Series -
Programmable Features -
Package / Case 24-VFQFN 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 USB
Fault Protection Over Temperature, Over Voltage, Short Circuit
Current - Charging Constant - Programmable
Charge Current - Max 3A
Battery Pack Voltage 4.4V
Battery Chemistry Lithium Ion/Polymer
Base Product Number BQ25606

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

BQ25606RGER Image
BQ25606RGER (1)

Manufacturer Part Number

BQ25606RGER

Manufacturer

Texas Instruments

Introduction

Integrated Circuit (IC) for battery charging

Product Features and Performance

Programmable constant current/constant voltage Li-Ion/Li-Polymer battery charger

Supports 1-cell Li-Ion/Li-Polymer batteries

Charges at up to 3A

Integrated boost converter with up to 13.5V output voltage

Supports USB interface

Product Advantages

Programmable charge current and termination current

Fault protection: over-temperature, over-voltage, short-circuit

High efficiency power conversion

BQ25606RGER Image
BQ25606RGER (2)

Key Technical Parameters

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

Input voltage: Up to 13.5V

Battery voltage: 4.4V

Supports 1-cell Li-Ion/Li-Polymer batteries

Quality and Safety Features

RoHS3 compliant

24-VQFN (4x4) package with exposed pad for enhanced thermal performance

Compatibility

Surface mount package for easy board integration

Application Areas

Portable electronics

Power banks

Wearable devices

Product Lifecycle

This product is currently in production and available for purchase.

Key Reasons to Choose This Product

Programmable and flexible charging solution

Robust fault protection for safe operation

High efficiency power conversion for extended battery life

Small package size for compact designs

Frequently Asked Questions(FAQ)

How does the BQ25606RGER handle thermal management during high-current charging, and what design considerations are necessary to prevent overheating in compact PCB layouts?
The BQ25606RGER integrates over-temperature protection with a programmable thermal regulation loop that reduces charge current when internal junction temperature exceeds safe thresholds. At maximum 3A charging current, power dissipation can reach up to 4.5W under worst-case conditions (e.g., poor airflow or high ambient temperature). Engineers must allocate sufficient copper area on the PCB—typically ≥400 mm² for the exposed pad—and consider via stitching around the package to improve heat spreading. Thermal vias under the device should have a minimum of six 0.3mm vias with 1oz copper plating to ensure adequate thermal conductivity to inner layers.
What are the key differences between the BQ25606RGER and similar Li-Ion chargers like the BQ25601 in terms of input voltage tolerance and safety features?
While both support USB-powered charging, the BQ25606RGER offers a higher maximum supply voltage of 13.5V compared to the BQ25601’s 6.5V limit, enabling compatibility with unregulated adapters or solar panels without additional clamping circuits. Additionally, the BQ25606 includes enhanced fault protection with dedicated short-circuit detection and adjustable over-voltage lockout, whereas the BQ25601 relies on basic over-voltage protection tied directly to the battery cell threshold. This makes the BQ25606 more suitable for applications requiring robust handling of variable input sources.
Can the BQ25606RGER be safely used with multi-cell battery configurations, and if not, what alternative TI PMICs would support two-cell Li-Ion setups at comparable efficiency?
No, the BQ25606RGER is strictly designed for single-cell Li-Ion/Polymer batteries with a regulated output of 4.4V, which aligns with standard chemistry limits. For two-cell configurations requiring up to 8.4V, engineers should consider the BQ25731 or BQ25887 series, which support programmable charge voltages up to 8.9V and feature integrated I2C interfaces for precise system monitoring. These alternatives also offer better scalability in industrial and portable power systems where higher energy density is needed.
What programming interface options exist for customizing charge profiles on the BQ25606RGER, and how do they impact firmware development complexity?
The BQ25606RGER communicates exclusively via an I2C-compatible SMBus interface, allowing real-time adjustment of charge current, termination thresholds, and safety timers. Unlike devices with dedicated pin-strapping configuration, this requires host microcontroller intervention, increasing firmware overhead but offering greater flexibility. Developers must implement pull-up resistors (typically 4.7kΩ) on SDA/SCL lines and account for bus capacitance limits (<400pF) to maintain reliable communication above 100kHz.
Is it feasible to parallel multiple BQ25606RGER units to increase total charge current beyond 3A, and what risks arise from doing so?
Direct parallel operation is not recommended due to potential current imbalance caused by slight variations in internal reference voltages and thermal gradients. Even minor mismatches can cause one IC to dominate current sharing while operating near its thermal limit. Instead, use external ideal diodes or dedicated multiphase charger controllers such as the BQ25620, which supports true load-sharing architectures. If parallel use is unavoidable, include current-sense feedback loops and active balancing circuits to mitigate risk.
How does the BQ25606RGER respond to input voltage transients above 13.5V, and what external components are essential to protect against such events?
Exceeding 13.5V damages the device permanently; thus, robust input protection is mandatory. A transient voltage suppressor (TVS) diode rated for 15–18V clamp voltage should be placed close to the input connector, combined with a series fuse and input capacitor (≥10µF ceramic + bulk electrolytic). Additionally, a Schottky diode between VBAT and IN pins prevents reverse current flow during hot-swaps. Without these protections, even brief surges from poorly regulated wall adapters can compromise reliability.
In what scenarios would the BQ25606RGER’s programmable charge current feature provide significant advantages over fixed-current alternatives?
Programmable current enables dynamic adaptation to available input power—for example, reducing charge rate from 3A to 1.5A when connected to a low-power USB port (≤500mA source capability). This extends battery life during trickle-charging phases and improves compliance with USB BC1.2 standards. Applications such as medical wearables or IoT edge nodes benefit from this intelligence, avoiding overheating or brownouts while maximizing utilization of limited input energy.
How does the Moisture Sensitivity Level (MSL) rating of MSL 2 affect manufacturing handling and shelf life for the BQ25606RGER, particularly in high-volume assembly environments?
With an MSL 2 classification, the BQ25606RGER must undergo reflow soldering within one year of opening the moisture barrier bag. Unopened storage is valid for 12 months at ≤30°C/60% RH. After unsealing, operators must bake the components at 125°C for 24 hours if the floor life exceeds 168 hours (7 days), per JEDEC J-STD-033 guidelines. Failure to adhere to these procedures increases popcorning risk during lead-free reflow, potentially damaging bond wires or solder joints.
What trade-offs exist between using the BQ25606RGER in continuous trickle-charge mode versus pulsed fast-charge modes for long-term battery health?
Continuous trickle charging at reduced current (e.g., C/20) maintains state-of-charge without stressing the cell but consumes standby power (~5µA quiescent current). Pulsed fast charging delivers higher average rates but induces mechanical strain in electrode materials over time. The BQ25606 supports automatic transition from fast-charge to constant-voltage phase, optimizing cycle life. However, frequent deep discharges followed by rapid top-off cycles accelerate capacity fade, so duty-cycle planning is critical for longevity.
Does the BQ25606RGER require external sense resistors for accurate current monitoring, and how does its built-in ADC support system diagnostics?
No external current-sense resistors are needed because the device uses internal MOSFET RDS(on) monitoring and integrates a 12-bit ADC to measure input voltage, battery voltage, and die temperature. This enables real-time reporting of charge status via I2C registers, including remaining capacity estimation using coulomb counting principles. Engineers can poll these values to trigger alerts or adjust algorithms in the host MCU without adding discrete components, simplifying BOM and layout.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments BQ25606RGER

Product Attribute BQ25606RGET BQ25601RTWR BQ25601DRTWR BQ25611RTWR
Part Number BQ25606RGET BQ25601RTWR BQ25601DRTWR BQ25611RTWR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Programmable Features - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Current - Charging - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Fault Protection - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Charge Current - Max - - - -
Battery Pack Voltage - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Interface - - - -
Number of Cells - - - -
Voltage - Supply (Max) - - - -
Battery Chemistry - - - -
Series - - - -

BQ25606RGER Datasheet PDF

Download BQ25606RGER pdf datasheets and Texas Instruments documentation for BQ25606RGER - Texas Instruments.

PCN Design/Specification
BQ25606 06/Sep/2017.pdf BQ25606 29/Oct/2021.pdf
HTML Datasheet
BQ25606 Datasheet.pdf

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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.

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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.
  • 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
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We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
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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
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  • ISO 14001: 2015
  • ISO 28000: 2007
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  • IPC
  • ESD
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BQ25606RGER Image

BQ25606RGER

Texas Instruments
32D-BQ25606RGER

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

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