TPS389050QDSERQ1

The TPS3890-Q1 is a high-accuracy voltage monitor with ultra-low quiescent current, capable of monitoring system voltages as low as 1.15V. It asserts an open-drain RESET signal when the SENSE voltage falls below a preset threshold or when the manual reset (MR) pin is driven low. After both the SENSE voltage and MR return above their respective thresholds, the RESET output remains low for a user-adjustable delay period. The TPS3890-Q1 family uses a high-precision voltage reference to achieve 1% threshold accuracy. By connecting an external capacitor to the CT pin, users can adjust the reset delay from 25μs to 30s. With an extremely low quiescent current of 2.1μA and a compact 1.5mm×1.5mm package, the TPS3890-Q1 is an ideal choice for battery-powered and space-constrained applications. The device is rated for an operating temperature range of -40°C to +125°C (TJ).

Applications

• Infotainment system head unit
• Hybrid/digital instrument cluster
• External amplifier
• ADAS camera
• Automotive gateway

Key features

• Meets automotive application standards with the following AEC-Q100 compliant characteristics
• 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: 25μs to 30s
• Ultra-low supply current: 2.1μA (typical)
• High threshold accuracy: 1% (maximum)
• High-precision hysteresis
• Fixed and adjustable threshold voltages: fixed thresholds of 1.2V to 5V for standard voltage rails, adjustable threshold voltage as low as 1.15V
• Manual reset (MR) input
• Open-drain RESET output
• Temperature range: -40°C to +125°C
• Package: 1.5mm×1.5mm wafer-level chip-scale no-lead (WSON) package