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Datasheet Linear Technology LTC2945CUD#TRPBF

ManufacturerLinear Technology
Part NumberLTC2945CUD#TRPBF

Wide Range I2C Power Monitor


  • Download » Datasheet, PDF, 815 Kb, Revision: B
    LTC2945 - Wide Range I2C Power Monitor
    Docket ↓
    Wide Range
    I2C Power Monitor
    FEATURES n n n n n n n n n n n n n DESCRIPTION Rail-to-Rail Input Range: 0V to 80V
    Wide Input Supply Range: 2.7V to 80V
    Shunt Regulator for Supplies >80V
    Δ∑ ADC with less than ±0.75% Total Unadjusted Error
    12-Bit Resolution for Current and Voltages
    Internal Multiplier Calculates 24-Bit Power Value
    Stores Minimum and Maximum Values
    Alerts When Limits Exceeded
    Additional ADC Input Monitors an External Voltage
    Continuous Scan and Snapshot Modes
    Shutdown Mode with IQ < 80µA
    Split SDA for Opto-Isolation
    Available in 12-Lead 3mm × 3mm QFN and MSOP
    Packages The LTC®2945 is a rail-to-rail system monitor that measures current, voltage, and power. It features an operating
    range of 2.7V to 80V and includes a shunt regulator for
    supplies above 80V to allow flexibility in the selection of
    input supply. The current measurement range of 0V to
    80V is independent of the input supply. An onboard 0.75%
    accurate 12-bit ADC measures load current, input voltage
    and an auxiliary external voltage. A 24-bit power value is ...



Package3x3 QFN-12
Package CodeUD


Demo BoardsDC1697A
Design ToolsLTspice Model,Linduino File
Export Controlno yes/no
FeaturesI2C Interface, Voltage Monitor, Current Monitor, Power Monitor
I/OSerial I2C
Isupply0.8 mA
Number of Supplies1
Operating Temperature Range0 to 70 °C
Vin Range-80V to +80V (extendable to higher voltages)

Eco Plan


Moldel Line

Series: LTC2945 (24)

Manufacturer's Classification

  • Signal Conditioning > Amplifiers > Current Sense Amplifiers
  • Monitor, Control and Protection > Power Monitors
  • Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) System Monitor

Other Names:


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