1 Features
• AEC-Q100 qualified with the following results:
– Device temperature grade 1: –40°C to 125°C
ambient operating temperature range
• Factory programmed or user-programmable
watchdog timeout
– ±10% Accurate timer (maximum)
– Factory programmed: 1ms to 100s
• Factory programmed or user-programmable reset
delay
– ±10% Accurate timer (maximum)
– Factory programmed option: 2ms to 10s
• Input voltage range: VDD = 1.04V to 6.0V
• Fixed threshold voltage (VIT-): 1.05V to 5.4V
– Threshold voltage available in 50mV steps
– 1.2% Voltage threshold accuracy (maximum)
– Built-in hysteresis (VHYS): 5% (typical)
• Ultra low supply current: IDD = 250nA (typical)
• Open-drain, push-pull; active-low outputs
• Various programmability options:
– Watchdog enable-disable
– Watchdog startup delay: no delay to 10s
– On the fly timer extension: 1X to 256X
– Latched output option
• MR functionality support

2 Applications
• On-board (OBC) and wireless charger
• Driver monitoring
• Battery Management System (BMS)
• Front camera
• Surround view system ECU

3 Description
The TPS35-Q1 is an ultra-low power consumption
(250nA typical) device offering a precision voltage
supervisor with a programmable timeout watchdog
timer. The TPS35-Q1 supports wide threshold levels
for undervoltage supervision with 1.2% accuracy
across the specified temperature range.
The TPS35-Q1 offers a high accuracy timeout
watchdog timer with a host of features for a wide
variety of applications. The timeout watchdog timer
can be factory programmed or user programmed
using an external capacitor. The timer value can be
changed on-the-fly using a combination of logic pins.
The watchdog also offers unique features such as
enable-disable, start-up delay, independent WDO pin
option.
The RESET or WDO delay can be set by factoryprogrammed
default delay settings or programmed by
an external capacitor. The device also offers a latched
output operation where the output is latched until the
supervisor or watchdog fault is cleared.
The TPS35-Q1 provides a performance upgrade
alternative to TPS3851-Q1 device family. The TPS35-
Q1 is available in a small 8-pin SOT-23 package.