LTC2970
LTC2970-1
Info : RECOMMENDED FOR NEW DESIGNS
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LTC2970
LTC2970-1

Dual I2C Power Supply Monitor and Margining Controller

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 12
1ku List Price Starting From $4.18
Features
  • Less Than ±0.5% Total Unadjusted Error 14-Bit ΔΣ ADC with On-Chip Reference
  • Dual, 8-Bit IDACs with 1x Voltage Buffers
  • Linear, Voltage Servo Adjusts Supply Voltages by Ramping IDAC Outputs Up/Down
  • I2C Bus Interface (SMBus Compatible)
  • Extensive, User Configurable Fault Monitoring
  • On-Chip Temperature Sensor
  • Available in 24-Pin 4mm × 5mm QFN Package
Additional Details
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The LTC2970 is a dual power supply monitor and margining controller with an SMBus compatible I2C bus interface. A low-drift, on-chip reference and 14-bit ΔΣ A/D converter allow precise measurements of supply voltages, load currents or internal die temperature. Fault management allows ALERT to be asserted for configurable overvoltage and undervoltage fault conditions. Two voltage buffered, 8-bit IDACs allow highly accurate programming of DC/DC converter output voltages. The IDACs can be configured to automatically servo the power supplies to the desired voltages using the ADC. The LTC2970-1 adds a tracking feature that can be used to turn multiple power supplies on or off in a controlled manner.

The bus address is set to 1 of 9 possible combinations by pin strapping the ASEL0 and ASEL1 pins. The LTC2970/ LTC2970-1 are packaged in a 24-pin, 4mm × 5mm QFN package.

Applications

  • Dual Power Supply Voltage Servo
  • Monitoring Supply Voltage and Current
  • Programmable Power Supplies
  • Programmable Reference
Part Models 12
1ku List Price Starting From $4.18

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC2970CUFD#PBF
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LTC2970CUFD-1#PBF
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LTC2970CUFD-1#TRPBF
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LTC2970HUFD#PBF
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LTC2970HUFD#TRPBF
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LTC2970HUFD-1#PBF
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LTC2970HUFD-1#TRPBF
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LTC2970IUFD#PBF
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LTC2970IUFD#TRPBF
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LTC2970IUFD-1#PBF
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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DC2467A

LTC2970 Linduino One Shield [Requires DC2026, Optional DC1613]

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DC2467A

LTC2970 Linduino One Shield [Requires DC2026, Optional DC1613]

LTC2970 Linduino One Shield [Requires DC2026, Optional DC1613]

Product Detail

The DC2467 Linduino® shield is a demonstration system for the LTC2970 dual power supply monitor and margining controller. The LTC2970 provides a rich set of features for monitoring and controlling two power rails, including monitoring supply voltage and current, detecting faults in voltage and current, margining the supply voltage high or low, measuring temperature, and turning the supplies on and off through GPIO pins. It is fully accessible through the built-in I2C bus, which allows it to communicate with an external microcontroller or other I2C bus master.

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DC980A/B

LTC2970 Demo Board | Dual Power Supply Monitor and Margining Controller [Requires DC590]

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DC980A/B

LTC2970 Demo Board | Dual Power Supply Monitor and Margining Controller [Requires DC590]

LTC2970 Demo Board | Dual Power Supply Monitor and Margining Controller [Requires DC590]

Product Detail

The DC980A and DC980B are a demonstration system that showcases the LTC2970, a dual power supply monitor and margining controller with an I2C interface. The DC980A board contains the LTC2970 device and the DC980B board contains the LTC3828 dual DC/DC controller. The two boards interface to each other via a 20-pin connector. The DC980B board features the LTC3828 dual output, 2-phase synchronous buck regulator. The LTC2970’s two voltage-buffered, 8-bit IDACs allow highly accurate margining of the LTC3828’s output voltages. The IDACs can be configured to automatically servo the power supplies to a desired voltage using the ADC for feedback. The DC980B comes preconfigured with 3.3V and 5V power supply rail voltages.

Tools & Simulations

Tools & Simulations 2

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

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