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BQ20Z45DBTR-R1
Texas Instruments
IC GAS GAUGE W/IMP TRACK 38TSSOP
15553 Pcs New Original In Stock
Battery Multi-Function Controller IC Lithium Ion/Polymer 38-TSSOP
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*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (493 Ratings)
BQ20Z45DBTR-R1
Product Overview
1405571
DiGi Electronics Part Number
BQ20Z45DBTR-R1-DGManufacturer
Texas Instruments
BQ20Z45DBTR-R1
Description
IC GAS GAUGE W/IMP TRACK 38TSSOPInventory
15553 Pcs New Original In Stock
Battery Multi-Function Controller IC Lithium Ion/Polymer 38-TSSOP
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.
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Worldwide Delivery in 3-5 Business Days
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BQ20Z45DBTR-R1 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
-
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
38-TFSOP (0.173", 4.40mm Width)
Supplier Device Package
38-TSSOP
Base Product Number
BQ20Z45
Datasheet & Documents
Manufacturer Product Page
BQ20Z45DBTR-R1 Specifications
HTML Datasheet
BQ20Z45DBTR-R1-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
296-38869-6
296-38869-2
296-38869-1
BQ20Z45DBTR-R1-DG
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
Their after-sales service sets them apart from competitors.
de desembre 02, 2025
The company's after-sales support has been consistently impressive.
de desembre 02, 2025
Timely deliveries from DiGi's logistics team help prevent delays in critical operations.
de desembre 02, 2025
DiGi Electronics delivered my order within just two days, which is impressive given the distance. Their fast shipping really helps keep my project on schedule.
de desembre 02, 2025
I appreciate their efforts in using eco-friendly materials for packaging—it's a thoughtful initiative.
de desembre 02, 2025
Fast shipping combined with dedicated after-sales service makes DiGi Electronics my preferred supplier.
de desembre 02, 2025
Affordable, reliable, and friendly—that sums up my experiences with DiGi Electronics.
de desembre 02, 2025
Their efficiency in dispatch and helpfulness sets them apart.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the BQ20Z45DBTR-R1 in a new battery management system given its obsolete status?
Using the BQ20Z45DBTR-R1 in new designs carries significant supply chain risks due to its obsolete status. While functional and accurate for impedance track-based fuel gauging, future production runs may face component shortages. We recommend evaluating pin-compatible alternatives like the BQ27441-G1 with updated availability, or securing lifetime buys with verified suppliers. For long-life products, consider redesigning with active TI production parts to avoid obsolescence-driven requalifications.
How does the BQ20Z45DBTR-R1 compare to the BQ34Z100-G1 in accuracy and integration complexity for 3S lithium-ion packs?
The BQ20Z45DBTR-R1 offers Impedance Track™ gauging suitable for 2–4 cell packs but lacks the BQ34Z100-G1’s coulomb counting with voltage-based correction that improves state-of-charge accuracy under partial charge cycles. The BQ20Z45DBTR-R1 requires external protection FETs and sense resistors, increasing board complexity versus the BQ34Z100-G1’s simpler integration. However, if legacy software support exists, BQ20Z45DBTR-R1 may reduce development time despite lower precision in dynamic loads.
Can the BQ20Z45DBTR-R1 be safely substituted with the BQ20Z45DBTR in high-vibration environments without firmware changes?
Yes, the BQ20Z45DBTR is a functional and pin-for-pin replacement for the BQ20Z45DBTR-R1 with identical specifications and firmware compatibility. However, ensure PCB layout accounts for potential micro-cracking under vibration, especially on the 38-TSSOP thermal pad. Use compliant mounting techniques and underfill if necessary. Verify operation across temperature extremes (-40°C to 85°C) after assembly to detect latent mechanical stress issues.
What are common accuracy drift issues with the BQ20Z45DBTR-R1 in long-term deployment and how can they be mitigated?
Over time, the BQ20Z45DBTR-R1 may exhibit fuel gauge drift due to aging battery impedance not being fully compensated without periodic full discharge calibration. To maintain accuracy, implement regular full charge/discharge cycles (at least once per 30 partial cycles) to recalibrate the impedance model. Additionally, avoid extended storage at mid-charge states and monitor battery temperature gradients across pack, as uneven thermal exposure degrades gauging precision. Consider adding periodic OCV calibration routines in system firmware.
What thermal design considerations are critical when operating the BQ20Z45DBTR-R1 near its 85°C upper temperature limit?
Operating the BQ20Z45DBTR-R1 near 85°C requires careful PCB thermal management to avoid localized overheating that triggers over-temperature faults or accelerates device aging. Use a solid thermal ground plane connected to the exposed thermal pad, minimize trace resistance around current-sense paths, and avoid placing near high-power components. Derate system performance above 70°C ambient and validate with thermal imaging under worst-case load (e.g., charge termination + protection check). Ensure MSL-2 moisture sensitivity is respected during reflow to prevent popcorning.
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.
BQ20Z45DBTR-R1 CAD Models
Texas Instruments BQ20Z45DBTR-R1 PCB symbols & footprints
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