Alternative Parts

  • LTC2936

    Programmable Hex Voltage Supervisor with EEPROM and Comparator Outputs

  • LTC2939

    Configurable 6-Supply Monitors with Watchdog Timer


Features and Benefits

  • Supervises 6 Power Supplies
  • I2C Adjustable UV and OV Trip Points
  • Guaranteed Threshold Accuracy: ±1%
  • I2C/SMBus Interface
  • Internal EEPROM
  • 256 Programmable Thresholds per Channel
  • Up to Three Range Settings per Channel
  • Two General Purpose Inputs
  • Three General Purpose Inputs/Outputs
  • Programmable Output Delays
  • Supply Voltage Range, 3.4V to 13.9V
  • Supply Voltage Power Sharing from V1 to V4
  • 16-Lead 5mm × 4mm DFN and SSOP Packages

Product Details

The LTC2933 is an EEPROM configurable voltage supervisor which can simultaneously monitor up to six power supply voltage inputs. Each voltage detector offers I2C programmable over/undervoltage thresholds in various ranges and increments.

Two general purpose inputs (GPI) can be configured as programmable manual reset (MR), UV disable (UVDIS), margin (MARG) or auxiliary comparator (AUXC) inputs. Three general purpose pins (GPIO) can be configured for input or output operation. When configured as an input, a GPIO pin can be mapped to any other GPIO configured as output. The GPIO pins can also be configured as ALERT or fault outputs. Faults can be configured with programmable delay-on-release times. Output type and polarity are also configurable.

Status and history registers log faults and can be polled via the I2C interface. A fault log snapshot is also backed up in internal EEPROM. All parameters are programmable via the I2C interface. Configuration EEPROM supports autonomous operation without additional software.


  • High Availability Computer Systems
  • Network Servers
  • Telecom Equipment
  • Data Storage

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (3)

Tools & Simulations


Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits.


Design Tools


LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.

Product Recommendations

LTC2933 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.


LTC2933 Discussions

RE: externally forcing latch-off of ADM1275-2
12 week(s) ago in Power By Linear
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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 Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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Evaluation Boards Pricing displayed is based on 1-piece.
Up to two boards can be purchased through To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.