LTC2970
LTC2970-1

RECOMMENDED FOR NEW DESIGNS

Dual I2C Power Supply Monitor and Margining Controller

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Part Details

  • 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
LTC2970
LTC2970-1
Dual I2C Power Supply Monitor and Margining Controller
ADC Total Unadjusted Error vs Temperature Product Package 1 Dual Power Supply Monitor and Controller (One of Two Channels Shown)
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Application Note 1

Technical Articles 3

Informational 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
LTC2974
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Precision Resistor Network 1
LT5400
RECOMMENDED FOR NEW DESIGNS Quad Matched Resistor Network
Quad or More Supply Monitors 1
LTC2933
PRODUCTION Programmable Hex Voltage Supervisor with EEPROM
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Tools & Simulations

Linduino 2

Evaluation Kits

eval board
schematic 1
schematic 2
DC980A/B

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

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Product Details

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.

eval board
schematic 3
DC2467A

LTC2970 Linduino One Shield [Requires DC2026, Optional DC1613]

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Product Details

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.
DC980A/B
LTC2970 Demo Board | Dual Power Supply Monitor and Margining Controller [Requires DC590]
DC980A - Schematic Figure 2. Connecting DC980A/DC980B Boards and the DC590 I2C/Serial Controller
DC2467A
LTC2970 Linduino One Shield [Requires DC2026, Optional DC1613]
Figure 1. DC2467 Shield Mounted on the DC2026 Linduino

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