TPS3851-Q1 Series

Automotive, high-accuracy voltage supervisor with Integrated watchdog timer

Catalog

Automotive, high-accuracy voltage supervisor with Integrated watchdog timer

Part	Number of Voltages Monitored	Type	Qualification	Voltage - Threshold	Reset Timeout	Package / Case	Grade	Reset	Output	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Mounting Type	Function	Supplied Contents	Utilized IC / Part
Texas Instruments TPS3851H18SQDRBRQ1	1	Simple Reset/Power-On Reset	AEC-Q100	1.8 V	170 ms	8-VDFN Exposed Pad	Automotive	Active Low	Open Drain or Open Collector	-40 °C	125 ¯C	8-SON (3x3)	Surface Mount
Texas Instruments TPS3851H33EDRBR	1	Simple Reset/Power-On Reset		3.3 V	170 ms	8-VDFN Exposed Pad		Active Low	Open Drain or Open Collector	-40 °C	125 ¯C	8-SON (3x3)	Surface Mount
Texas Instruments TPS3851G25EDRBR	1	Simple Reset/Power-On Reset		2.5 V	170 ms	8-VDFN Exposed Pad		Active Low	Open Drain or Open Collector	-40 °C	125 ¯C	8-SON (3x3)	Surface Mount
Texas Instruments TPS3851H18EDRBT	1	Simple Reset/Power-On Reset		1.8 V	170 ms	8-VDFN Exposed Pad		Active Low	Open Drain or Open Collector	-40 °C	125 ¯C	8-SON (3x3)	Surface Mount
Texas Instruments TPS3851G33SQDRBRQ1	1	Simple Reset/Power-On Reset	AEC-Q100	3.3 V	170 ms	8-VDFN Exposed Pad	Automotive	Active Low	Open Drain or Open Collector	-40 °C	125 ¯C	8-VSON (3x3)	Surface Mount Wettable Flank
Texas Instruments TPS3851EVM-780		Power Management												Power Supply Supervisor/Tracker/Sequencer	Board(s)	TPS3851
Texas Instruments TPS3851G18EDRBT	1	Simple Reset/Power-On Reset		1.8 V	170 ms	8-VDFN Exposed Pad		Active Low	Open Drain or Open Collector	-40 °C	125 ¯C	8-SON (3x3)	Surface Mount
Texas Instruments TPS3851H30EDRBT	1	Simple Reset/Power-On Reset		3 V	170 ms	8-VDFN Exposed Pad		Active Low	Open Drain or Open Collector	-40 °C	125 ¯C	8-SON (3x3)	Surface Mount
Texas Instruments TPS3851G50EDRBT	1	Simple Reset/Power-On Reset		5 V	170 ms	8-VDFN Exposed Pad		Active Low	Open Drain or Open Collector	-40 °C	125 ¯C	8-SON (3x3)	Surface Mount
Texas Instruments TPS3851G30EQDRBRQ1	1	Simple Reset/Power-On Reset	AEC-Q100	3 V	170 ms	8-VDFN Exposed Pad	Automotive	Active Low	Open Drain or Open Collector	-40 °C	125 ¯C	8-VSON (3x3)	Surface Mount Wettable Flank

Catalog

Automotive, high-accuracy voltage supervisor with Integrated watchdog timer

Key Features

• AEC-Q100 qualified with the following results:Device temperature grade 1: –40°C to 125°C ambient operating temperature rangeDevice HBM ESD classification level 2Device CDM ESD classification level C4BFunctional Safety-capableDocumentation available to aid functional safety system designInput voltage range: VDD= 1.6 V to 6.5 V0.8% Voltage threshold accuracyLow supply current: IDD= 10 µA (typical)User-programmable watchdog timeoutFactory programmed precision watchdog and reset timers:Manual reset input (MR)Open-drain outputsPrecision undervoltage monitoring:Supports common rails from 1.8 V to 5.0 V4% and 7% undervoltage thresholds available0.5% HysteresisWatchdog disable featureAvailable in a small 3-mm × 3-mm, 8-Pin VSON packageAEC-Q100 qualified with the following results:Device temperature grade 1: –40°C to 125°C ambient operating temperature rangeDevice HBM ESD classification level 2Device CDM ESD classification level C4BFunctional Safety-capableDocumentation available to aid functional safety system designInput voltage range: VDD= 1.6 V to 6.5 V0.8% Voltage threshold accuracyLow supply current: IDD= 10 µA (typical)User-programmable watchdog timeoutFactory programmed precision watchdog and reset timers:Manual reset input (MR)Open-drain outputsPrecision undervoltage monitoring:Supports common rails from 1.8 V to 5.0 V4% and 7% undervoltage thresholds available0.5% HysteresisWatchdog disable featureAvailable in a small 3-mm × 3-mm, 8-Pin VSON package

Description

The TPS3851-Q1 device combines a precision voltage supervisor with a programmable watchdog timer. The TPS3851-Q1 comparator achieves a 0.8% accuracy (–40°C to +125°C) for the undervoltage (VITN) threshold on the VDD pin. The TPS3851-Q1 also includes accurate hysteresis on the undervoltage threshold making the device ideal for use with tight tolerance systems. The supervisorRESETdelay features a 15% accuracy, high-precision delay timing. The TPS3851-Q1 includes a programmable watchdog timer for a wide variety of applications. The dedicated watchdog output (WDO) enables increased resolution to help determine the nature of fault conditions. The watchdog timeouts can be programmed either by an external capacitor, or by factory-programmed default delay settings. The watchdog can be disabled via logic pins to avoid undesired watchdog timeouts during the development process. The TPS3851-Q1 is available in a small 3.00-mm × 3.00-mm, 8-pin VSON package. The TPS3851-Q1 features wettable flanks that allow for easy optical inspection. The TPS3851-Q1 device combines a precision voltage supervisor with a programmable watchdog timer. The TPS3851-Q1 comparator achieves a 0.8% accuracy (–40°C to +125°C) for the undervoltage (VITN) threshold on the VDD pin. The TPS3851-Q1 also includes accurate hysteresis on the undervoltage threshold making the device ideal for use with tight tolerance systems. The supervisorRESETdelay features a 15% accuracy, high-precision delay timing. The TPS3851-Q1 includes a programmable watchdog timer for a wide variety of applications. The dedicated watchdog output (WDO) enables increased resolution to help determine the nature of fault conditions. The watchdog timeouts can be programmed either by an external capacitor, or by factory-programmed default delay settings. The watchdog can be disabled via logic pins to avoid undesired watchdog timeouts during the development process. The TPS3851-Q1 is available in a small 3.00-mm × 3.00-mm, 8-pin VSON package. The TPS3851-Q1 features wettable flanks that allow for easy optical inspection.