1 Features

• AEC-Q100 qualified for automotive applications

– Device temperature grade 1: –40°C to +125°C

ambient operating temperature

– Device HBM ESD classification level 2

– Device CDM ESD classification level C7B

• Designed for high performance and safety:

• Input current (4 channels): IDD = 15 μA maximum

• High threshold accuracy: ±0.25 typical, ±1

maximum

• Built-in precision hysteresis:

VHYS (VIT > 800 mV) = 0.75 typical

• Functional Safety-Compliant

– Developed for functional safety applications

– Documentation available to aid ISO 26262

system design

– Systematic capability up to ASIL D

– Hardware capability up to ASIL A

– Self test - manual setup

• Designed for a wide range of applications:

• Input voltage range, VDD = 1.7 V to 6V

• Quad, triple, dual, or single voltage supervisor

• Each channel highly configurable

– Window (OV, UV), UV-only, OV-only options

– Window tolerance: ±3 to ±11

– High threshold resolution: VIT ≤ 0.8 V: 20-mV

steps VIT > 0.8 V: Lower of 0.5 or 20-mV

steps

• Push-button monitor on all channels

• Reset time delay (tD): Fixed time delay options

– Options: 23 fixed time options ranging from

20 μs minimum to 1200 ms maximum

• Multiple output topologies, package type:

• TPS3704xxxO-Q1:open-drain, active-low (RESET)

• TPS3704xxxL-Q1: push-pull, active-low (RESET)

• TPS3704xxxH-Q1: push-pull, active-high (RESET)

2 Applications

• Advanced Driver Assistance System (ADAS)

• Automotive infotainment and cluster

• HEV/EV

• Body electronics and lighting

3 Description

The TPS3704-Q1 is a low-power precision window

voltage supervisor that can be configured as a quad,

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

threshold accuracy of ±1 in a compact SOT-23

package offering a small solution size. The TPS3704-

Q1 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 (tD options from 20 μs to

1200 ms) prevent false reset signals when monitoring

multiple voltage rails.

The TPS3704-Q1 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. The TPS3704-Q1 functional safety

compliance elevates automotive design that can

meet ISO 26262 requirements and automotive safety

integrity levels. 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

pin(s). Each channel on the TPS3704-Q1 can be

customized to its own over- and undervoltage window

detection with an upper and lower threshold tolerance

that can be symmetric or asymmetric. The TPS3704-

Q1 can monitor up to four channels while maintaining

an ultra-low IQ current of 5.5 μA (typical) and operates

over a temperature range of –40°C to +125°C (TA).

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