1 Features

• Up to four independent voltage supervisor

channels:

– Fixed and adjustable window, UV, or OV

voltage options. See Table 4-1 for available

options.

– Easy to use calculator tool for adjustable

versions

– High threshold accuracy: ±0.25 (typical)

– Built-in precision hysteresis: 0.75 (typical)

– Fixed time delay options

– Open drain outputs

• Designed to support Arm-based processors such

as TDA4, Sitara AM33xx, and advanced FPGAs

and SOCs

• Low quiescent current: 15 μA (maximum)

• Temperature range: –40°C to +125°C

• Functional Safety-Compliant

– Systematic capability up to SIL 3

– Hardware capability up to SIL 1

2 Applications

• Factory automation

• Building automation

• Medical

• Motor drives

• Grid infrastructure

• Wireless infrastructure

• Data center & enterprise computing

3 Description

The TPS3704x is a low-power precision window or

standard voltage supervisor that can be configured as

a quad, triple, or dual channel. Each channel has a

threshold accuracy of ±1 in an 8-pin

(1.6 mm x 2.9 mm) SOT-23 package offering a small

solution size. The TPS3704x includes a very accurate

threshold detection, with high resolution, that is ideal

for systems that operate on low-voltage supply rails

and have narrow margin supply tolerances. Built-in

low threshold hysteresis and a fixed reset delay

prevent false reset signals when monitoring multiple

voltage rails.

The TPS3704x does not require any external resistors

for setting the over and undervoltage reset thresholds,

which further optimizes overall high accuracy, cost,

solution size, and improves reliability for safety

systems.

Separate VDD and SENSEx pins allow monitoring of

rail voltages other than VDD or can be used as a

push-button input. Optional use of external resistors

are supported by the SENSEx pins. Each channel

on the TPS3704x can be customized to its own over

and undervoltage window detection with an upper and

lower threshold tolerance that can be symmetric or

asymmetric.