Low-Voltage, Precision, Single/Dual/Triple/Quad-Voltage μP Supervisors

Description

Create a design and simulate using EE-Sim^® tools:

The MAX16132–MAX16135 are low-voltage, ±1% accurate, single, dual, triple, and quad-voltage μP supervisors that monitor up to 4 system-supply voltages for undervoltage and overvoltage faults. The MAX16132–MAX16134 feature independent reset outputs, while the MAX16135 features dual reset outputs. For the MAX16132–MAX16134, a reset output asserts when the voltage at its corresponding input falls outside a factory-trimmed undervoltage and overvoltage window threshold. The reset is maintained for a minimum timeout period after voltage at the input falls within the factory-set window threshold. For the MAX16135, a reset output asserts when either, or both, of the corresponding inputs fall outside the factory-trimmed undervoltage and overvoltage window thresholds. See Selector Guide for available options. These integrated supervisory circuits significantly improve system reliability and reduce size compared to separate ICs or discrete components.

The MAX16132–MAX16135 are fixed-threshold devices. The nominal input voltage for any input is factory programmable from 1.0V to 5.0V, providing a wide range of threshold selections.The window threshold levels are factory programmable from ±4% to ±11%, with ±1% resolution and 0.25% or 0.50% hysteresis. The ±1% threshold accuracy over temperature and window threshold monitoring make these devices ideal for automotive ADAS applications.

The reset outputs are active-low, open-drain, and are guaranteed to be in the correct reset output logic state when V_DD remains greater than 1.0V. All devices are offered with 23 reset timeout periods ranging from 20µs (min) to 1200ms (min). All reset outputs share the same factory-set reset timeout period.

The MAX16132–MAX16135 are available in a small 8-pin SOT23 package and specified over the automotive temperature range of -40°C to +125°C.

Design Solution: Gatekeeping Soldiers Protect ADAS Power Supply Voltage Integrity ›

Design Solution: Get More From Your System With a Cutting-Edge Supervisory IC ›

Key Features

• High Precision
  • ±1% Threshold Accuracy Over Temperature
• Programmable OV Threshold: 104% to 111%
• Programmable UV Threshold: 89% to 96%
• Programmable Input Voltage from 1.0V to 5.0V
• Low 15µA Supply Current
• Quad-Input Monitor
• 23 Programmable Reset Timeout Periods
• Immune to Short Monitored Supply Transients
• Guaranteed Correct Logic State Down to V_DD = 1V
• Open-Drain Outputs
• Small SOT-23 Package
• -40°C to +125°C Automotive Operating Temperature Range
• AEC-Q100 Qualified (/V Part Numbers, Refer to Ordering Information)

Applications/Uses

• ADAS
• Multivoltage ASICs
• Servers
• Storage Equipment