TPS3897
Single-channel, ultra-small, adjustable supervisor with active-high, open-drain output
TPS3897
- 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.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | TPS389x Single-Channel, Adjustable Voltage Monitor in Ultra-Small Package datasheet (Rev. B) | PDF | HTML | 02 Sep 2014 |
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 brief | 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 |
Design & development
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Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
USON (DRY) | 6 | Ultra Librarian |
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