BQ79600-Q1 - Automotive SPI/UART Bridge IC | Texas Instruments
MPN: BQ79600-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $2.88 | $2,880.00 |
Drop-in alternatives for BQ79600-Q1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
BQ79600PWRQ1
β Drop-Inπ Reference alternative (not in catalog)
BQ79600-Q1
β Drop-Inβ In Stock
$2.88 / Unit
View Datasheet βBQ79600-Q1 Maximum Ratings & Electrical Characteristics
| Function | Automotive SPI/UART communication interface |
| Interface Type | SPI / UART |
| Supply Voltage (VIO) | 2.8 V to 5.5 V |
| Operating Temperature Range | -40Β°C to +125Β°C |
| Package | 16-TSSOP (PW) |
| Mounting Type | Surface Mount |
| Functional Safety | ASIL-D compliant |
| Automatic Host Wakeup | Yes |
| Daisy-Chain Protocol | TI battery monitoring daisy-chain |
| Compatible Battery Monitors | BQ7961X-Q1, BQ79616-Q1, BQ79731-Q1 |
| AEC-Q100 Qualified | Yes |
| RoHS Compliant | Yes |
| MSL Level | 1 |
| Number of Pins | 16 |
| Supply Current (Typical) | [DATA_NEEDED: Supply current] |
BQ79600-Q1 Pin Configuration
| Pin 1 | VIO β I/O supply voltage |
| Pin 2 | GND β Ground |
| Pin 3 | SCLK β SPI clock |
| Pin 4 | SDI β SPI data input |
| Pin 5 | SDO β SPI data output |
| Pin 6 | CS β Chip select |
| Pin 7 | UART_TX β UART transmit |
| Pin 8 | UART_RX β UART receive |
| Pin 9 | INH β Inhibit pin for shutdown control |
| Pin 10 | NFAULT β Fault output (active low) |
| Pin 11 | WAKE β Wake-up input |
| Pin 12 | VDD β Power supply |
| Pin 13 | VDDIO β I/O supply for daisy-chain |
| Pin 14 | DCP β Daisy-chain positive |
| Pin 15 | DCN β Daisy-chain negative |
| Pin 16 | GND β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
BQ79600-Q1 is suitable for 6 applications: Automotive Battery Management System (BMS), Electric Vehicle (EV) Battery Management, Hybrid Electric Vehicle (HEV) Battery Management, Energy Storage Systems (ESS), Industrial Battery Backup Systems, Telecom Backup Power Systems.
Automotive Battery Management System (BMS)
The BQ79600-Q1 serves as the communication bridge between the MCU and TI battery monitoring ICs in automotive BMS. It translates SPI/UART signals to the daisy-chain protocol, enabling reliable communication across the battery stack. Its ASIL-D compliance and automatic host wakeup make it ideal for safety-critical EV/HEV applications. The wide operating temperature range (-40Β°C to +125Β°C) ensures performance in harsh automotive environments.
Recommended
Electric Vehicle (EV) Battery Management
In EVs, the BQ79600-Q1 interfaces the vehicle's MCU to battery monitoring ICs, ensuring accurate cell voltage and temperature monitoring. Its automatic host wakeup allows the system to wake from low-power modes when a fault is detected, improving safety and efficiency. The device supports both SPI and UART, providing flexibility in MCU selection. Its functional safety compliance is critical for meeting automotive safety standards.
Recommended
Hybrid Electric Vehicle (HEV) Battery Management
The BQ79600-Q1 is used in HEV BMS to communicate with battery monitoring ICs, enabling efficient energy management. Its compact 16-TSSOP package saves board space, and its wide supply voltage range accommodates various system voltages. The device's daisy-chain capability reduces wiring complexity, lowering system cost and weight. It is designed to operate reliably in the high-vibration, high-temperature environment of HEVs.
Recommended
Energy Storage Systems (ESS)
In ESS, the BQ79600-Q1 enables communication between the system controller and battery monitoring ICs, ensuring safe and efficient operation. Its automatic host wakeup feature is beneficial for standby modes, reducing power consumption. The device supports long daisy-chain topologies, making it suitable for large-scale battery installations. Its automotive-grade reliability ensures long-term performance in stationary applications.
Recommended
Industrial Battery Backup Systems
The BQ79600-Q1 is used in industrial battery backup systems to interface the MCU with battery monitoring ICs, providing real-time status and fault detection. Its SPI/UART interface simplifies integration with industrial controllers. The device's wide temperature range and functional safety compliance make it suitable for critical infrastructure. It supports automatic host wakeup, enabling rapid response to fault conditions.
Recommended
Telecom Backup Power Systems
In telecom backup power systems, the BQ79600-Q1 ensures reliable communication between the system controller and battery monitoring ICs. Its compact package and low power consumption are ideal for space-constrained telecom enclosures. The device's daisy-chain capability allows monitoring of multiple battery strings, improving system scalability. Its automotive-grade quality ensures high reliability in demanding environments.
Recommended
Recommended Products Summary
Engineering reference data for BQ79600-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BQ79600PWRQ1 | BQ79616-Q1 | BQ79731-Q1 | LTC6813-1 |
|---|---|---|---|---|---|
| Package | 16-TSSOP (PW) | 16-TSSOP (PW) | HTQFP-64 | HTQFP-64 | LQFP-64 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Function | Communication bridge IC | Communication bridge IC | Battery monitor and protector | Battery monitor and protector | Battery monitor |
| Interface | SPI/UART | SPI/UART | Daisy-chain | Daisy-chain | SPI |
| Supply Voltage (VIO) | 2.8V to 5.5V | 2.8V to 5.5V | [DATA_NEEDED] | [DATA_NEEDED] | 5V |
| Operating Temperature | -40Β°C to +125Β°C | -40Β°C to +125Β°C | -40Β°C to +125Β°C | -40Β°C to +125Β°C | -40Β°C to +125Β°C |
| Functional Safety | ASIL-D | ASIL-D | ASIL-D | ASIL-D | No |
| Automatic Host Wakeup | Yes | Yes | No | No | No |
Key Differentiators
- Functional safety compliance up to ASIL-D (vs LTC6813-1)
- Automatic host wakeup (vs BQ79616-Q1)
- Dedicated bridge IC for TI daisy-chain protocol (vs LTC6813-1)
Design Notes
Ensure the VIO pin is connected to the same voltage rail as the MCU's I/O supply to maintain proper logic levels. The VIO range is 2.8V to 5.5V. Use appropriate decoupling capacitors (e.g., 0.1uF and 10uF) close to the VIO and VDD pins to minimize noise.
For daisy-chain communication, maintain proper termination and signal integrity. Place the BQ79600-Q1 close to the battery monitoring ICs to minimize trace length. Use differential pairs for DCP/DCN if possible, and follow TI's layout guidelines in the datasheet.
Do not exceed the absolute maximum ratings for VIO and VDD. Ensure the daisy-chain is properly biased and terminated to avoid communication errors. Also, verify that the MCU's SPI/UART settings match the BQ79600-Q1's requirements (e.g., clock polarity, baud rate).
Compliance Information
AEC-Q100 qualified per TI product page. RoHS compliant. Other compliance details not specified in provided data.
