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BQ77PL900DLR
Texas Instruments
IC BATT PROT LI-ION 5-10C 48SSOP
35443 Pcs New Original In Stock
Battery Battery Protection IC Lithium Ion/Polymer 48-SSOP
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Minimum 1
5.0 / 5.0
- (346 Ratings)
BQ77PL900DLR
Product Overview
1238978
DiGi Electronics Part Number
BQ77PL900DLR-DGManufacturer
Texas Instruments
BQ77PL900DLR
Description
IC BATT PROT LI-ION 5-10C 48SSOPInventory
35443 Pcs New Original In Stock
Battery Battery Protection IC Lithium Ion/Polymer 48-SSOP
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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BQ77PL900DLR Technical Specifications
Category
Power Management (PMIC), Battery Management
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Function
Battery Protection
Battery Chemistry
Lithium Ion/Polymer
Number of Cells
5 ~ 10
Fault Protection
Over Current, Over/Under Voltage, Short Circuit
Interface
I2C
Operating Temperature
-40°C ~ 100°C (TA)
Mounting Type
Surface Mount
Package / Case
48-BSSOP (0.295", 7.50mm Width)
Supplier Device Package
48-SSOP
Base Product Number
BQ77PL900
Datasheet & Documents
HTML Datasheet
BQ77PL900DLR-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
BQ77PL900DLRG4
-BQ77PL900DLRG4
-BQ77PL900DLR-NDR
296-23520-1-NDR
-296-23520-1
296-23520-1
296-23520-2
BQ77PL900DLRG4-DG
-296-23520-1-NDR
-BQ77PL900DLRG4-NDR
296-23520-6
296-23520-6-NDR
-296-23520-1-DG
296-23520-2-NDR
Standard Package
1,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Le service après-vente de DiGi Electronics est exemplaire. Ils répondent rapidement à nos questions et proposent des solutions concrètes pour tout problème rencontré.
de desembre 02, 2025
Les échanges avec leur service client sont fluides et leur souci d’offrir des produits de qualité est évident. La livraison rapide m’a permis de respecter mes échéances.
de desembre 02, 2025
My order arrived sooner than anticipated, with excellent protective packaging.
de desembre 02, 2025
DiGi Electronics ensures rapid delivery through well-organized logistics.
de desembre 02, 2025
DiGi Electronics’ sustainable packaging practices truly contribute to a greener planet.
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Frequently Asked Questions (FAQ)
What are the critical design considerations when using the BQ77PL900DLR in a high-vibration industrial environment, and how does its 48-SSOP package impact long-term reliability?
The BQ77PL900DLR’s 48-SSOP package, while compact, has limited mechanical robustness under sustained vibration. In industrial or automotive applications with high mechanical stress, ensure PCB mounting includes strain relief (e.g., conformal coating, underfill, or rigid board supports near the IC). Additionally, verify solder joint integrity through thermal cycling tests, as the 0.295" width and fine-pitch leads increase susceptibility to fatigue. Always follow TI’s recommended land pattern and reflow profile to minimize voiding and warpage risks during assembly.
Can the BQ77PL900DLR safely replace the older BQ77910A in a 6S Li-ion battery pack design without firmware changes, and what protection thresholds differ?
Direct replacement of the BQ77910A with the BQ77PL900DLR is not recommended without firmware validation. While both support 5–10 cell configurations and I²C communication, the BQ77PL900DLR has tighter overvoltage thresholds (e.g., +50mV typical vs. +100mV on BQ77910A) and different delay timings for fault response. These differences can cause premature shutdowns or missed protections if the host controller isn’t reconfigured. Always revalidate protection setpoints and update calibration data in firmware to match the BQ77PL900DLR’s default thresholds.
How does the BQ77PL900DLR handle cell imbalance during fast charging in a 10S configuration, and what external components are needed to ensure accurate voltage sensing?
The BQ77PL900DLR does not perform active cell balancing—it only monitors and protects. In a 10S pack under fast charge, passive balancing via external bleed resistors (typically 100Ω–1kΩ, 0.25W) across each cell is required to prevent overvoltage on stronger cells. Ensure Kelvin sensing traces are routed separately from high-current paths to avoid IR drop errors. TI recommends placing 100nF ceramic capacitors close to each VCx pin to filter noise and maintain ±10mV measurement accuracy, especially in noisy EV or drone applications.
What are the risks of operating the BQ77PL900DLR near its -40°C lower temperature limit in cold-start automotive applications, and how does this affect overcurrent detection accuracy?
At -40°C, the BQ77PL900DLR’s internal reference voltage and comparator offsets drift, potentially causing false overcurrent or undervoltage triggers during cold cranking. The IC remains functional, but detection thresholds may shift by up to ±2% from room-temperature values. To mitigate risk, use external temperature compensation in the host MCU or implement a startup delay to allow the IC to stabilize. Avoid relying solely on factory-calibrated thresholds in extreme cold; instead, perform characterization testing across the full temperature range with actual load profiles.
Is the BQ77PL900DLR suitable for medical-grade portable devices requiring IEC 60601-1 compliance, and what design modifications are needed for isolation and fault containment?
The BQ77PL900DLR itself is not certified to IEC 60601-1, but it can be used in medical designs with proper system-level isolation. Since it interfaces via I²C, add a galvanically isolated digital isolator (e.g., TI ISO1540) between the BQ77PL900DLR and the main MCU to meet patient leakage current requirements. Also, implement redundant fault monitoring in software and use the IC’s open-drain ALERT pin to trigger hardware shutdown circuits. Ensure the 48-SSOP package is mounted away from user-accessible areas and protected by enclosure barriers to satisfy creepage and clearance rules.
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.
BQ77PL900DLR CAD Models
Texas Instruments BQ77PL900DLR PCB symbols & footprints
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