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TPS3897ADRYR

Adjustable voltage supervisor, 500mV-6.5V, 1% accuracy, 6uA Iq, 6-USON

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Manufacturer Part：

TPS3897ADRYR

Package：

6-USON (DRY) (1.45 x 1.0 x 0.55 mm)

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Description

Product Overview

The TPS3897ADRYR from Texas Instruments is an ultra-small adjustable voltage supervisor in a 6-pin USON (1.45 x 1.0mm) package. With adjustable threshold down to 500mV, 1% accuracy, and 6uA quiescent current, it provides precision voltage monitoring with active-high open-drain output.

Key Specifications

Function Adjustable voltage supervisor
Threshold Voltage Adjustable from 500mV
Threshold Accuracy 1% over temperature
Supply Voltage 1.7V ~ 6.5V
Quiescent Current 6uA typical
Output Type Active-high, open-drain (18V rated)
Package 6-USON (DRY) 1.45 x 1.0mm
Operating Temperature -40°C to +125°C

Features

  • Ultra-small 1.45 x 1.0mm USON package
  • Adjustable threshold down to 500mV
  • Capacitor-adjustable delay time
  • 6uA typical quiescent current
  • External enable input
  • Open-drain output rated at 18V
  • Pin-for-pin compatible with MAX6895/6/7/8

Applications

  • DSP, MCU, and FPGA voltage monitoring
  • Portable and battery-powered products
  • Notebook and desktop computers
  • ASIC and SoC power rail supervision
  • Industrial control system undervoltage detection

The TPS3897ADRYR from Texas Instruments is an ultra-small, adjustable voltage supervisor in a 6-pin USON package measuring just 1.45 x 1.0mm. It monitors any voltage above 500mV with 1% threshold accuracy across the full -40°C to +125°C temperature range. The delay time is capacitor-adjustable via the CT pin, providing flexibility in power sequencing. With only 6uA typical quiescent current, it is ideal for battery-powered applications. The active-high open-drain output is rated at 18V, enabling level-shifted reset signaling. Pin-for-pin compatible with MAX6895/6/7/8.

The TPS3897A uses a precision comparator to monitor the voltage at the SENSE pin against an internal 500mV reference. An external resistor divider sets the trip threshold. When SENSE rises above the threshold and ENABLE is high, the open-drain SENSE_OUT pin goes high-impedance after a capacitor-programmable delay set by the CT pin. When SENSE falls below the threshold or ENABLE goes low, SENSE_OUT asserts low immediately. The open-drain output is rated at 18V, allowing pull-up to voltage rails higher than VCC for level-shifted reset signaling.

Pin Name Type Function
1 VCC Power Supply voltage (1.7-6.5V)
2 GND Power Ground
3 CT Output Delay capacitor (float = 40us default)
4 SENSE_OUT Output Active-high open-drain output
5 SENSE Input Voltage monitor input
6 ENABLE Input Output enable (active high)
  • FPGA and ASIC core voltage monitoring (0.9V, 1.0V, 1.2V)
  • Multi-rail power sequencing with adjustable delay
  • Battery-powered device undervoltage lockout
  • Portable instrument power rail supervision
  • Industrial controller voltage fault detection
Manufacturer Part Number Package Notes
ADI MAX6897ATT+T 6-TDFN Pin-compatible, adjustable
TI TPS3895ADRYR 6-USON Active-low push-pull output
TI TPS3808G01DBVR SOT-23-6 Adjustable, larger package
TI TPS3898ADRYR 6-USON Active-low open-drain output
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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