TPS3890-Q1

• Qualified for Automotive Applications
• 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
• Power-On-Reset (POR) Generator with Adjustable Delay Time: 25 µs to 30 s
• Very Low Supply Current: 2.1 µA (Typical)
• High Threshold Accuracy: 1% (max)
• Precision Hysteresis
• Fixed and Adjustable Threshold Voltages:
  • Fixed Thresholds for Standard Rails:
    1.2 V to 5 V
  • Adjustable Down to 1.15 V
• Manual Reset (MR) Input
• Open-Drain RESET Output
• Temperature Range: –40°C to +125°C
• Package: 1.5-mm × 1.5-mm WSON

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The TPS3890-Q1 is a precision voltage supervisor with low-quiescent current that monitors system voltages as low as 1.15 V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds. The TPS3890-Q1 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 25 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890-Q1 has a very low quiescent current of 2.1 µA and is available in a small 1.5-mm × 1.5-mm package, making the device well-suited for battery-powered and space-constrained applications. The device is fully specified over a temperature range of –40°C to +125°C (T_J).