Model No: TPS7B6350QPWPRQ1
Texas Instruments TPS7B6350QPWPRQ1
Manufacturer: Texas Instruments
SEMICON NO.: TPS7B6350QPWPRQ1
Package: 16-HTSSOP
Stock: In stock
Description: Watchdog LDO Regulator 40V 300mA
SEMICON NO.: TPS7B6350QPWPRQ1
Package: 16-HTSSOP
Stock: In stock
Description: Watchdog LDO Regulator 40V 300mA
Quantity :
| Mfr | Texas Instruments |
| Device Type | Automotive Watchdog Low-Dropout (LDO) Regulator |
| Input Voltage | 4 V to 40 V |
| Output Voltage (Fixed) | 5 V |
| Maximum Output Current | 300 mA |
| Maximum Dropout Voltage | 400 mV at 300 mA |
| Output Capacitor Stability | 4.7 µF to 500 µF; ESR 0.001 Ω to 20 Ω |
| Quiescent Current | Shutdown Mode: < 4 µA |
| Window Ratio (Open-to-Closed) | Configurable as 1:1 or 8:1 |
| Operating Temperature | –40°C to +125°C |
| Package | 16-HTSSOP |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
TPS7B6350QPWPRQ1 | TI watchdog LDO automotive regulator
The TPS7B6350QPWPRQ1 is a 300mA, 40V high-voltage, ultralow quiescent-current watchdog LDO regulator from Texas Instruments, combining a precision 5V fixed-output linear regulator with an integrated microcontroller monitoring watchdog in a 16-pin HTSSOP thermally-enhanced package. This AEC-Q100 automotive-qualified device operates from input voltages up to 40V while consuming only 19µA typical quiescent current at light load, making it ideal for always-on battery-connected automotive systems.
The integrated watchdog function monitors microcontroller or microprocessor working status to prevent software runaway, supporting both standard watchdog mode and window watchdog mode with programmable timeout duration via an external ROSC resistor, delivering independent system supervision separate from the monitored MCU. Featuring 400mV maximum dropout at full 300mA load, 60dB PSRR at 100Hz, overcurrent protection, and thermal shutdown, the TPS7B6350QPWPRQ1 provides robust power management and functional safety monitoring for automotive body electronics, infotainment, and industrial control applications.
Applications
● Automotive microcontroller and microprocessor power-supply systems requiring integrated watchdog supervision to prevent software runaway in body control modules and ECUs.
● Battery-connected always-on automotive modules including gateway modules, remote keyless entry systems, and CAN/LIN transceiver supplies leveraging 19µA quiescent current.
● Industrial control systems and programmable logic controllers demanding 40V high-voltage input tolerance with watchdog-monitored MCU operation.
● Infotainment and cluster systems requiring stable 5V rails with functional safety monitoring over wide input transients.
● Sensor interfaces and telematics units in 12V and 24V vehicle electrical systems benefiting from integrated voltage regulation and watchdog timing.
FAQs
Q: What is the difference between standard and window watchdog modes? A: Standard watchdog accepts a service signal anytime within the watchdog window with no closed window, while window watchdog requires servicing within a specific open window; fault occurs when not serviced during the watchdog window.
Q: How does the watchdog enable control work? A: When PG is high, external logic to WD_EN pin controls watchdog - low enables, high disables; if PG is low, watchdog is automatically disabled and WDO stays in high-impedance state.
Q: What is the output voltage accuracy? A: The TPS7B6350QPWPRQ1 delivers a fixed 5V output with tight DC accuracy specified in the datasheet, maintaining regulation across line, load, and temperature variations.
Alternative regulator Models
1. TPS7B6333QPWPRQ1: The 3.3V-output sibling sharing identical watchdog architecture and HTSSOP-16 footprint for lower-voltage MCU supply rails.
2. TPS7B6850QPWPRQ1: The 500mA higher-current family member in HTSSOP-28 packaging adding Power Good and enhanced protection for power-hungry automotive processors.
3. TPS7B6933QPWPRQ1: The 3.3V 500mA variant combining higher current capacity with the 68-family feature set in larger HTSSOP-28 packaging.
4. TPS7B82-Q1: The 300mA non-watchdog alternative delivering equivalent 40V input range with 2% accuracy and 700mV dropout for simpler automotive supplies.
5. TPS7B86-Q1: The 17µA ultralow-quiescent LDO with 40V input for always-on battery applications prioritizing minimal standby power without watchdog integration.
The integrated watchdog function monitors microcontroller or microprocessor working status to prevent software runaway, supporting both standard watchdog mode and window watchdog mode with programmable timeout duration via an external ROSC resistor, delivering independent system supervision separate from the monitored MCU. Featuring 400mV maximum dropout at full 300mA load, 60dB PSRR at 100Hz, overcurrent protection, and thermal shutdown, the TPS7B6350QPWPRQ1 provides robust power management and functional safety monitoring for automotive body electronics, infotainment, and industrial control applications.
Applications
● Automotive microcontroller and microprocessor power-supply systems requiring integrated watchdog supervision to prevent software runaway in body control modules and ECUs.
● Battery-connected always-on automotive modules including gateway modules, remote keyless entry systems, and CAN/LIN transceiver supplies leveraging 19µA quiescent current.
● Industrial control systems and programmable logic controllers demanding 40V high-voltage input tolerance with watchdog-monitored MCU operation.
● Infotainment and cluster systems requiring stable 5V rails with functional safety monitoring over wide input transients.
● Sensor interfaces and telematics units in 12V and 24V vehicle electrical systems benefiting from integrated voltage regulation and watchdog timing.
FAQs
Q: What is the difference between standard and window watchdog modes? A: Standard watchdog accepts a service signal anytime within the watchdog window with no closed window, while window watchdog requires servicing within a specific open window; fault occurs when not serviced during the watchdog window.
Q: How does the watchdog enable control work? A: When PG is high, external logic to WD_EN pin controls watchdog - low enables, high disables; if PG is low, watchdog is automatically disabled and WDO stays in high-impedance state.
Q: What is the output voltage accuracy? A: The TPS7B6350QPWPRQ1 delivers a fixed 5V output with tight DC accuracy specified in the datasheet, maintaining regulation across line, load, and temperature variations.
Alternative regulator Models
1. TPS7B6333QPWPRQ1: The 3.3V-output sibling sharing identical watchdog architecture and HTSSOP-16 footprint for lower-voltage MCU supply rails.
2. TPS7B6850QPWPRQ1: The 500mA higher-current family member in HTSSOP-28 packaging adding Power Good and enhanced protection for power-hungry automotive processors.
3. TPS7B6933QPWPRQ1: The 3.3V 500mA variant combining higher current capacity with the 68-family feature set in larger HTSSOP-28 packaging.
4. TPS7B82-Q1: The 300mA non-watchdog alternative delivering equivalent 40V input range with 2% accuracy and 700mV dropout for simpler automotive supplies.
5. TPS7B86-Q1: The 17µA ultralow-quiescent LDO with 40V input for always-on battery applications prioritizing minimal standby power without watchdog integration.
