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BQ78350DBT-R1
Texas Instruments
IC BATT MGMT CTRL MULTI 30TSSOP
1459 Pcs New Original In Stock
Battery Battery Monitor IC Multi-Chemistry 30-TSSOP
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5.0 / 5.0
- (84 Ratings)
BQ78350DBT-R1
Product Overview
1268678
DiGi Electronics Part Number
BQ78350DBT-R1-DGManufacturer
Texas Instruments
BQ78350DBT-R1
Description
IC BATT MGMT CTRL MULTI 30TSSOPInventory
1459 Pcs New Original In Stock
Battery Battery Monitor IC Multi-Chemistry 30-TSSOP
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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BQ78350DBT-R1 Technical Specifications
Category
Power Management (PMIC), Battery Management
Packaging
Tube
Series
-
Product Status
Not For New Designs
Function
Battery Monitor
Battery Chemistry
Multi-Chemistry
Number of Cells
3 ~ 15
Fault Protection
Over Current, Over Temperature, Over/Under Voltage
Interface
SMBus
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
30-TFSOP (0.173", 4.40mm Width)
Supplier Device Package
30-TSSOP
Base Product Number
BQ78350
Datasheet & Documents
Manufacturer Product Page
BQ78350DBT-R1 Specifications
HTML Datasheet
BQ78350DBT-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
296-42995-5
Standard Package
60
Alternative Parts
PART 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
가격이 부담 없이, 서비스도 따뜻해서 계속 찾게 됩니다.
de desembre 02, 2025
他們的物流運作流程明確，追蹤系統先進，讓我們隨時掌握貨物狀況。
de desembre 02, 2025
J'apprécie leur attention aux détails lors de l'expédition, chaque commande est bien emballée.
de desembre 02, 2025
Their tracking system is precise, saving me time and stress.
de desembre 02, 2025
Shipments are always dispatched on time, ensuring a seamless experience.
de desembre 02, 2025
Outstanding after-sales support that makes us feel valued.
de desembre 02, 2025
I appreciate their reliable logistics tracking, which keeps me well-informed at all times.
de desembre 02, 2025
Always confident that my orders will arrive on time and well-packaged.
de desembre 02, 2025
I've received excellent value and service during my repeat visits.
de desembre 02, 2025
The numerous options available ensure I always find the perfect product.
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Frequently Asked Questions (FAQ)
Can the BQ78350DBT-R1 be used in a new battery management system design despite being marked 'Not For New Designs'?
While the BQ78350DBT-R1 is technically functional and still available, Texas Instruments explicitly marks it as 'Not For New Designs,' meaning it lacks long-term support, future firmware updates, and may not receive reliability or qualification enhancements. For new projects, consider migrating to a newer generation like the BQ769x2 series (e.g., BQ76952DBT), which offers improved accuracy, enhanced diagnostics, and active development support. Using the BQ78350DBT-R1 in new designs increases supply chain and obsolescence risk over a 5–10 year product lifecycle.
What are the key risks when replacing a BQ78350DBT-R1 with a competing battery monitor like the Maxim MAX17853 in a 12S Li-ion pack design?
Direct replacement of the BQ78350DBT-R1 with the MAX17853 introduces several integration risks: the MAX17853 uses a different communication protocol (SPI vs. SMBus), requires reconfiguration of fault thresholds and cell balancing algorithms, and has distinct power sequencing requirements. Additionally, the MAX17853 supports higher cell counts but may need external components for accurate voltage sensing at lower cell voltages. A drop-in replacement is not feasible—firmware, PCB layout, and protection logic must be revalidated, increasing development time and certification risk.
How does the BQ78350DBT-R1 handle cell balancing in high-temperature environments near its 85°C operating limit?
The BQ78350DBT-R1 disables internal cell balancing when the die temperature approaches critical thresholds to prevent thermal runaway, even if the ambient temperature is within the -40°C to 85°C range. This can lead to state-of-charge (SoC) drift in multi-cell packs under sustained high-load conditions. Designers should implement external temperature monitoring and consider derating balancing current or adding heatsinking. For applications with frequent high ambient temperatures, supplement with active balancing or migrate to a device with thermal-aware balancing algorithms like the BQ76952.
Is the BQ78350DBT-R1 suitable for safety-critical applications requiring ISO 26262 compliance in automotive battery systems?
The BQ78350DBT-R1 is not qualified for ISO 26262 functional safety applications and lacks the necessary documentation (e.g., FMEDA, safety manuals) required for ASIL-rated systems. While it provides basic over-voltage, under-voltage, and over-temperature protection, it does not support advanced diagnostics or fault coverage metrics needed for automotive safety integrity. For such applications, use a safety-certified alternative like the BQ79616-Q1, which is designed specifically for ASIL-D compliance and includes redundant monitoring and self-test features.
What layout considerations are critical when designing a PCB for the BQ78350DBT-R1 to ensure accurate voltage sensing across 15 series-connected cells?
To maintain measurement accuracy with the BQ78350DBT-R1 in a 15-cell stack, minimize trace resistance and imbalance by using symmetrical Kelvin connections for each cell sense line. Keep high-current power paths physically separated from sensitive analog inputs to avoid ground bounce and noise coupling. Place bypass capacitors (100nF ceramic) as close as possible to each cell input pin, and ensure the reference ground (VSS) is connected at a single point near the lowest cell to prevent common-mode errors. Poor layout can introduce millivolt-level offsets, leading to incorrect state-of-charge estimation and premature shutdown.
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.
BQ78350DBT-R1 CAD Models
Texas Instruments BQ78350DBT-R1 PCB symbols & footprints
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