Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
BQ34Z651DBTR
Texas Instruments
IC GAS GAUGE LI-ION 2-4C 44TSSOP
1585 Pcs New Original In Stock
Battery Multi-Function Controller IC Lithium Ion/Polymer 44-TSSOP
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (252 Ratings)
BQ34Z651DBTR
Product Overview
1241809
DiGi Electronics Part Number
BQ34Z651DBTR-DGManufacturer
Texas Instruments
BQ34Z651DBTR
Description
IC GAS GAUGE LI-ION 2-4C 44TSSOPInventory
1585 Pcs New Original In Stock
Battery Multi-Function Controller IC Lithium Ion/Polymer 44-TSSOP
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
BQ34Z651DBTR Technical Specifications
Category
Power Management (PMIC), Battery Management
Packaging
-
Series
Impedance Track™
Product Status
Obsolete
Function
Multi-Function Controller
Battery Chemistry
Lithium Ion/Polymer
Number of Cells
2 ~ 4
Fault Protection
Over Current, Over Temperature, Over/Under Voltage, Short Circuit
Interface
SMBus
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
44-TFSOP (0.173", 4.40mm Width)
Supplier Device Package
44-TSSOP
Base Product Number
BQ34Z651
Datasheet & Documents
HTML Datasheet
BQ34Z651DBTR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
2156-BQ34Z651DBTR
TEXTISBQ34Z651DBTR
Standard Package
2,000
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Die Sendungsverfolgung hat mir geholfen, planmäßig angekommen, tolles System.
de desembre 02, 2025
アフターサポートのおかげで、安心して長く使うことができると感じました。
de desembre 02, 2025
Fast, reliable delivery combined with excellent after-sales service makes for a great shopping experience.
de desembre 02, 2025
I'm always pleased with how cost-effective and reliable their offerings are.
de desembre 02, 2025
The helpful product descriptions and guides made exploring the website enjoyable.
de desembre 02, 2025
DiGi Electronics’ commitment to reliable shipping and customer care keeps me coming back.
de desembre 02, 2025
I appreciate their honesty in pricing, which aligns with my company’s values.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
What are the key design-in risks when using the BQ34Z651DBTR in a new lithium-ion battery pack for industrial equipment?
The BQ34Z651DBTR is listed as obsolete, which presents a significant supply chain and long-term reliability risk for new designs. While it supports 2- to 4-cell Li-ion/polymer packs with robust fault protection and Impedance Track™ fuel gauging, using it in a new design may lead to premature end-of-life issues. We recommend evaluating the BQ40Z50RSMR-R1 as a viable, pin-compatible successor with enhanced firmware support and ongoing availability. If proceeding with the BQ34Z651DBTR, secure extended inventory and validate firmware customization options early to mitigate obsolescence risks.
How does the BQ34Z651DBTR compare to the BQ40Z50RSMR-R1 in terms of integration complexity and firmware development?
The BQ34Z651DBTR requires more manual configuration and legacy development tools compared to the BQ40Z50RSMR-R1, which offers a modern GUI (bqStudio) and pre-certified firmware for faster integration. The BQ34Z651DBTR uses SMBus for communication but lacks the advanced diagnostics and configurability of its successor. Engineers may face longer debug cycles due to outdated documentation and tooling. If migrating from BQ34Z651DBTR to BQ40Z50RSMR-R1, expect minor register map differences but benefit from improved algorithm accuracy and ongoing TI support.
Can the BQ34Z651DBTR reliably operate in high-temperature environments near 85°C, and what thermal design considerations should be addressed?
While the BQ34Z651DBTR is rated for operation up to 85°C (TA), sustained high-temperature environments increase the risk of inaccurate fuel gauging due to sensor drift and accelerated aging of battery materials. Ensure proper PCB thermal layout—avoid placing near power-dissipating components—and verify temperature sensing accuracy using an NTC thermistor network calibrated across the full range. Consider oversampling temperature via the SMBus interface and adding thermal derating logic in system firmware to protect battery health and maintain BQ34Z651DBTR performance.
What are the critical PCB layout guidelines for ensuring signal integrity when interfacing the BQ34Z651DBTR via SMBus in noisy power systems?
To maintain SMBus integrity with the BQ34Z651DBTR in electrically noisy environments, keep SDA and SCL traces short, use 4.7kΩ pull-up resistors close to the BQ34Z651DBTR, and route traces away from high-current paths. Implement a solid ground plane and guard rings around sensitive analog sensing lines (like VCELL and TS). Add TVS diodes on SMBus lines if EMI exposure is expected. Poor layout can lead to communication errors and incorrect fuel gauge readings, especially in industrial or automotive applications where ground bounce is common.
Is it safe to use the BQ34Z651DBTR as a drop-in replacement for older fuel gauges in legacy 4-cell Li-ion battery packs, and what calibration steps are required?
The BQ34Z651DBTR is not a direct drop-in replacement without thorough recalibration, even within 4-cell Li-ion systems. It requires cell characterization data, accurate sense resistor value programming (typically 10mΩ–50mΩ), and Impedance Track™ learning cycles (minimum 1–2 full charge/discharge cycles) to deliver accurate state-of-charge reporting. Older gas gauge ICs may have different algorithms or voltage thresholds, so validate protection thresholds (over-voltage, under-voltage) and communication timing on the SMBus to prevent false fault triggering. Always revalidate the complete protection chain after integrating the BQ34Z651DBTR into a legacy pack design.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
BQ34Z651DBTR CAD Models
Texas Instruments BQ34Z651DBTR PCB symbols & footprints
productDetail
