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TPS3850H50QDRCRQ1

Automotive, window supervisor for OV & UV monitoring with window watchdog timer & programmable delay

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TPS3850H50QDRCRQ1
Datasheet:

TPS3850H50QDRCRQ1 Datasheet (PDF)
Series:

Automotive, AEC-Q100
Programmable:

Not Verified
Type:

Simple Reset/Power-On Reset
Number of Voltages Monitored:

1
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TPS3850H50QDRCRQ1 General Description

The TPS3850-Q1 combines a precision voltage supervisor with a programmable window watchdog timer. The TPS3850-Q1 window comparator achieves 0.8% accuracy (–40°C to +125°C) for both overvoltage (V_IT+(OV)) and undervoltage (V_IT–(UV)) thresholds on the SENSE pin. The TPS3850-Q1 also includes accurate hysteresis on both thresholds, making the device ideal for use with tight tolerance systems. The supervisor RESET delay can be set by factory-programmed default delay settings, or programmed by an external capacitor. The factory-programmed RESET delay features a 9.5% accuracy, high-precision delay timing.

The TPS3850-Q1 includes a programmable window 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 window watchdog timeouts can be set by factory-programmed default delay settings, or programmed by an external capacitor. The watchdog can be disabled via logic pins to avoid undesired watchdog timeouts during the development process.

The TPS3850-Q1 is available in a small 3.00-mm × 3.00-mm, 10-pin VSON package. The TPS3850-Q1 features wettable flanks for easy optical inspection.

Key Features

AEC-Q100 Qualified with the following results:
- Device temperature grade 1: –40°C to 125°C ambient operating temperature range
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
Functional Safety-capable
- Documentation available to aid functional safety system design
Input voltage range: V_DD = 1.6 V to 6.5 V
0.8% Voltage threshold accuracy (Maximum)
Low supply current: I_DD = 10 µA (typical)
User-programmable watchdog timeout
User-programmable reset delay
Factory programmed precision watchdog and reset timers
Open-drain outputs
Precision over- and undervoltage monitoring:
- Supports common rails from 0.9 V to 5.0 V
- 4% and 7% Fault windows available
- 0.5% Hysteresis
Watchdog disable feature
Available in a small 3-mm × 3-mm, 10-Pin VSON package

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Supervisors	Series	Automotive, AEC-Q100
Programmable	Not Verified	Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1	Voltage - Threshold	5V
Output	Open Drain or Open Collector	Reset	Active Low
Reset Timeout	Adjustable/Selectable	Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount	Base Product Number	TPS3850