ICL7665S

CMOS Micropower Over/Under Voltage Detector

OVERVIEW

The ICL7665S super CMOS micropower Over/Under voltage detector contains two low power, individually programmable voltage detectors on a single CMOS chip. Requiring typically 3μA for operation, the device is intended for battery-operated systems and instruments which require high or low voltage warnings, settable trip points, or fault monitoring and correction. The trip points and hysteresis of the two voltage detectors are individually programmed via external resistors. An internal bandgap type reference provides an accurate threshold voltage while operating from any supply in the 1.6V to 16V range.

The ICL7665S, super programmable Over/Under voltage detector is a direct replacement for the industry standard. The ICL7665B offering wider operating voltage and temperature ranges, improved threshold accuracy (ICL7665SA), and temperature coefficient, and guaranteed maximum supply current. All improvements are highlighted in the electrical characteristics section. All critical parameters are guaranteed over the entire commercial and industrial temperature ranges.

KEY FEATURES

  • Guaranteed 10µA maximum quiescent current over-temperature
  • Guaranteed wider operating voltage range over entire operating temperature range
  • 2% threshold accuracy (ICL7665SA)
  • Dual comparator with precision internal reference
  • 100ppm/°C temperature coefficient of threshold voltage
  • 100% tested at 2V
  • Output current sinking ability: Up to 20mA
  • Individually programmable upper and lower trip voltages and hysteresis levels
  • Pb-Free available (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ICL7665S
Basic Information
Production Status
Mass Production(*)
# of Voltage Monitors
2
Monitor Voltage Min (V)
1.6
Monitor Voltage Max (V)
16
VMONITOR
Adj to 1.3V Ref
Reset Output Type
Active Low
Manual Reset
No
TwinPin™ MR#/RST#
No
WDT
No
Adjustable POR Timeout
No
Features
Programmable Hysteresis
Adjustable Vtrip
Yes
Fixed Vtrip
No
Bus/Output Interface
N/A
Input Voltage Min (V)
1.6
Input Voltage Max (V)
16
Qualification Level
Standard
Can Sample
YES
Temperature Range
-40 to +85

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