Product details

Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) Adjustable Features Manual reset capable Reset threshold accuracy (%) 1 Output driver type/reset output Active-high, Open-drain Time delay (ms) Programmable Rating Catalog Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) Adjustable Features Manual reset capable Reset threshold accuracy (%) 1 Output driver type/reset output Active-high, Open-drain Time delay (ms) Programmable Rating Catalog Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 125
USON (DRY) 6 1 mm² 1.5 x 1
  • Very Small USON (1.45 mm × 1.00 mm) Package
  • Adjustable Threshold Down to 500 mV
  • Threshold Accuracy: 1% Over Temperature
  • Capacitor-Adjustable Delay Time
  • Low Quiescent Current: 6 µA (Typical)
  • External Enable Input
  • Open-Drain (Rated at 18 V) and Push-Pull Output
    Options
  • Temperature Range: –40°C to 125°C
  • Pin-for-Pin Compatible With MAX6895/6/7/8
  • Very Small USON (1.45 mm × 1.00 mm) Package
  • Adjustable Threshold Down to 500 mV
  • Threshold Accuracy: 1% Over Temperature
  • Capacitor-Adjustable Delay Time
  • Low Quiescent Current: 6 µA (Typical)
  • External Enable Input
  • Open-Drain (Rated at 18 V) and Push-Pull Output
    Options
  • Temperature Range: –40°C to 125°C
  • Pin-for-Pin Compatible With MAX6895/6/7/8

The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 mV with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitor-adjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low.

For TPS389xA versions, both SENSE and ENABLE have a capacitor-adjustable delay. The output asserts after this capacitor-adjustable delay when both SENSE and ENABLE inputs are good. The TPS389xP devices have a small, 0.2-µs propagation delay from when the enable pin asserts to when the output pin asserts, provided SENSE is above the threshold.

All devices operate from 1.7 V to 6.5 V and have a typical quiescent current of 6 µA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small USON package and is fully specified over the temperature range of TJ = –40°C to 125°C.

The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 mV with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitor-adjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low.

For TPS389xA versions, both SENSE and ENABLE have a capacitor-adjustable delay. The output asserts after this capacitor-adjustable delay when both SENSE and ENABLE inputs are good. The TPS389xP devices have a small, 0.2-µs propagation delay from when the enable pin asserts to when the output pin asserts, provided SENSE is above the threshold.

All devices operate from 1.7 V to 6.5 V and have a typical quiescent current of 6 µA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small USON package and is fully specified over the temperature range of TJ = –40°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet TPS389x Single-Channel, Adjustable Voltage Monitor in Ultra-Small Package datasheet (Rev. B) 02 Sep 2014
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 17 Mar 2020
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 28 Feb 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Application note Latching a Voltage Supervisor (Reset IC) (Rev. A) 05 Apr 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 Sep 2011
User guide TPS389xxA-XP-EVM047 User's Guide (Rev. A) 01 Sep 2011

Design & development

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SON (DRY) 6 View options

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