TPS3850H33QDRCRQ1

Features：

1 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: VDD = 1.6 V to 6.5 V

• 0.8% Voltage threshold accuracy (Maximum)

• Low supply current: IDD = 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

2 Applications

• On-board (OBC) & wireless charger

• Driver monitoring

• Digital cockpit processing unit

• Adas domain controller

• Automotive telematics control unit

3 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 (VIT+(OV)) and undervoltage (VIT–(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 factoryprogrammed 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 faultconditions. 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-Q

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