Monitor, Control and Protection Supervisory Circuits Single Supply Monitors

LTC699 - Microprocessor Supervisory Circuit

Features

  • Guaranteed Reset Assertion at Vcc = 1V
  • 1.5mA Maximum Supply Current
  • SO-8 Packaging
  • 4.65V Precision Voltage Monitor
  • Power OK/Reset Time Delay: 200ms
  • Minimum External Component Count
  • Performance Specified Over Temperature
  • Superior Upgrade for MAX699

Typical Application

LTC699 Typical Application
LTC699 Typical Application

Description

The LTC699 provides power supply monitoring for microprocessor-based systems. The features include microprocessor reset and watchdog timing. Precise internal voltage reference and comparator circuit monitor the power supply line. When an out-of-tolerance condition occurs, the RESET output is forced to active low. In addition, the RESET output is guaranteed to remain logic low even with VCC as low as 1V. An internal watchdog timer is also available, which forces the RESET output to active low when the watchdog input is not toggled prior to the time-out period of 1.6 seconds. The LTC699 is offered in DIP and surface mount packages.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing		 RoHS
LTC699CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LTC699CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC699CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC699IN8#PBF N-8 N I 05-08-1510 (N8) Yes
LTC699IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC699IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes


LTC699 Package Drawing
LTC699 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LTC699CN8#PBF N-8 C $3.08 $2.45 Yes
LTC699CS8#PBF SO-8 C $3.33 $2.65 Yes
LTC699CS8#TRPBF SO-8 C $2.71 Yes
LTC699IN8#PBF N-8 I $4.00 $3.25 Yes
LTC699IS8#PBF SO-8 I $4.33 $3.55 Yes
LTC699IS8#TRPBF SO-8 I $3.61 Yes
Buy Now • Request Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Applications

  • Critical µP Power Monitoring
  • Intelligent Instruments
  • Computers and Controllers
  • Automotive Systems

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Design Tools

LTspice

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Models for the following parts are available in LTspice:
LTC699

Technical Support