1 Features
• SIL 3 Functional Safety-Compliant (Targeted for
TPS37102)
– Documentation to aid IEC 61508 system design
– Systematic capability up to SIL 3 targeted
– Hardware capability up to SIL 3 targeted
• Functional Safety-Capable (TPS37100)
– Documentation available to aid functional safety
system design
• Wide supply voltage range: 3V to 105V
• Low quiescent current: 5μA
• High threshold accuracy: 1.1% (maximum)
• -95V reverse polarity protection on SENSE
• 5μs fast UV/OV monitor for 24V/48V systems
• Integrated buffer (AOUT) for supply voltage
measurement with enable pin
• Fixed and programmable release time delay
• Fixed and programmable sense time delay
• Open-drain, active-low output: OUT A and OUT B
• BIST and Latch available for TPS37102

2 Applications
• Analog input module
• CPU (PLC controller)
• Servo drive control module
• Servo drive power stage module
• Servo drive functional safety module

3 Description
The TPS37100 and TPS37102 are 105V input voltage
supervisors with low quiescent current (5uA), fast
detection time, and an integrated buffer for supply
voltage measurements. This family of devices can
be connected directly to voltages or battery rails
up to 105V for continuous monitoring of over (OV)
or under (UV) voltage conditions. Wide hysteresis
voltage options are available to ignore false output
deassertions that are be caused by battery voltage
transients.
The TPS37100 and TPS37102 include two outputs
(OUT A and OUT B) that are used as separate
OV and UV fault monitors enabling system to take
different action based on the fault that occurs.
Additionally, the AOUT pin provides a scaled down
SENSE pin voltage output and is intended to be
sampled by ADC for supply voltage measurements.
The user can choose the scaling factor desired based
on the orderable part selected. The TPS37102 comes
with BIST which is implemented at start-up to verify
device health as well as an optional latching feature
on OUT A to help the system bring into a safe state
when critical faults occurs.