LTC692
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LTC692

Microprocessor Supervisory Circuits

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Info: : PRODUCTION tooltip
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Part Details
Part Models 5
1ku List Price Starting From $5.02
Features
  • Guaranteed Reset Assertion at VCC = 1V
  • 1.5mA Maximum Supply Current
  • Fast (35ns Maximum) Onboard Gating of RAM Chip Enable Signals
  • 4.40V Precision Voltage Monitor
  • Power OK/Reset Time Delay: 200ms or Adjustable
  • Minimum External Component Count
  • 1μA Maximum Standby Current
  • Voltage Monitor for Power-Fail or Low Battery Warning
  • Thermal Limiting
  • Performance Specified Over Temperature
  • Superior Upgrade for MAX690 Family
  • SO8 and SO16 Packaging
Additional Details
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The LTC692/LTC693 provide complete power supply monitoring and battery control functions for microprocessor reset, battery backup, CMOS RAM write protection, power failure warning and watchdog timing. A precise internal voltage reference and comparator circuit monitor the power supply line. When an out-of-tolerance condition occurs, the reset outputs are forced to active states and the chip enable output unconditionally write-protects external memory. In addition, the RESET output is guaranteed to remain logic low even with VCC as low as 1V.

The LTC692/LTC693 power the active CMOS RAMs with a charge-pumped NMOS power switch to achieve low dropout and low supply current. When primary power is lost, auxiliary power, connected to the battery input pin, powers the RAMs in standby through an efficient PMOS switch.

For an early warning of impending power failure, the LTC692/LTC693 provide an internal comparator with a user-defined threshold. An internal watchdog timer is also available, which forces the reset pins to active states when the watchdog input is not toggled prior to a preset timeout period.

Applications

  • Critical μP Power Monitoring
  • Intelligent Instruments
  • Battery-Powered Computers and Controllers
  • Automotive Systems
Part Models 5
1ku List Price Starting From $5.02

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

Dec 14, 2023

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

LTC692CS8#PBF

PRODUCTION

LTC692CS8#TRPBF

PRODUCTION

LTC692IS8#PBF

PRODUCTION

LTC692IS8#TRPBF

PRODUCTION

Jun 16, 2021

- 21_0026

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC692CS8#PBF

PRODUCTION

LTC692CS8#TRPBF

PRODUCTION

LTC692IS8#PBF

PRODUCTION

LTC692IS8#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

arrow down

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

arrow down

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

Dec 14, 2023

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

LTC692CS8#PBF

PRODUCTION

LTC692CS8#TRPBF

PRODUCTION

LTC692IS8#PBF

PRODUCTION

LTC692IS8#TRPBF

PRODUCTION

Jun 16, 2021

- 21_0026

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC692CS8#PBF

PRODUCTION

LTC692CS8#TRPBF

PRODUCTION

LTC692IS8#PBF

PRODUCTION

LTC692IS8#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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