ISL88041

Quad Voltage Monitor with Enable Feature

OVERVIEW

The ISL88041 is a quad voltage-monitoring supervisor designed to monitor voltages ≥0.7V. Low voltage detection circuitry protects the user's system from low voltage conditions, resetting the system when any of the monitored power supply voltages V1MON-V4MON fall below their respective minimum voltage thresholds. The reset signal remains asserted until all of these voltages return to proper operating levels and stabilize.

Each rail's VMON point is independently adjustable by using an external resistor divider. The VMON inputs will ignore transients of less than 30µs on the monitored supplies, and the RST output is guaranteed to be valid down to VDD = 1V. The RST output is open-drain to allow ORing of multiple signals and interfacing to a wide range of logic levels. Also, the MR input allows the user to assert reset when this input is pulled low.

KEY FEATURES

  • Quad Voltage Monitoring
  • Adjustable Voltage Inputs Monitor Voltages ≥0.7V
  • Active-Low RST Output
  • Manual Reset Capability
  • Reset Signal Valid Down to VDD = 1V
  • Integrated 20kΩ Pull-Up Resistor on RST
  • Glitch Immunity on Voltage Monitoring Inputs
  • Pb-Free (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL88041
Basic Information
Production Status
Mass Production
# of Voltage Monitors
4
Monitor Voltage Min (V)
0.7
Monitor Voltage Max (V)
4
VMONITOR
All Ch Adj to 0.7V Ref
Reset Output Type
Active Low
Manual Reset
Yes
TwinPin™ MR#/RST#
No
WDT
No
Adjustable POR Timeout
No
Adjustable Vtrip
Yes
Fixed Vtrip
No
Bus/Output Interface
N/A
Input Voltage Min (V)
2.7
Input Voltage Max (V)
4
Qualification Level
Standard
Can Sample
YES
Temperature Range
-40 to +85

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