R1540 Series
High Noise Immunity 42V Input 70mA Voltage Tracker

  • Description

    The R1540 is a voltage tracker featuring input voltage in the range of 3.5 V to 42 V. Highly accurate output voltage which attributes to CE/ADJ pin achieves successful sequence control of the integrated off-board sensor module. Strong enough not to require the circuit to avoid external electromagnetic interference (EMI) and this contributes space saving.

    This regulator can be used under high temperature environment. It offers the maximum operating temperature of 105°C for consumer applications, and 125°C for industrial and automotive applications.

    Key Benefits

    • Excellent noise resistance provides effective shielding against EMI.
    • Lower stand-by current consumption leads to energy saving of the whole system to prolong battery life.
    • Response to requirements for sequence control in the system with integrated sensors.

  • Spec
    Consumer Industrial Automotive
    Input Voltage Range 3.5 V to 42.0 V (50.0 V)
    Operating Temperature Range -40°C to 105°C (125°C) -40°C to 125°C (150°C) -40°C to 125°C (150°C)
    Supply Current Typ. 60 µA
    Standby Current Typ. 0.1 µA
    Output Voltage Range 2.2 V to 14.0 V
    Output Voltage Accuracy ±15 mV
    (−40°C ≤ Ta ≤ 105°C, VCE/ADJ = 5 V)
    ±15 mV
    (−40°C ≤ Ta ≤ 125°C, VCE/ADJ = 5 V)
    ±15 mV
    (−40°C ≤ Ta ≤ 125°C, VCE/ADJ = 5 V)
    Dropout Voltage Typ. 1.3 V (IOUT = 70 mA)
    Output Current 70 mA
    Package SOT-23-5, HSOP-8E

    Protections / Functions

    TSD Reverse Current Limit ISC Inrush Constant Slope ECO mode Auto Discharge External Driver
  • Technical
    • Typical Application

      Typical Application

      CIN: 0.1 µF, COUT: 10 µF, Ceramic capacitor

  • Quality &
    • Refer to the datasheets for the details on the product.
    • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

Download Datasheet

Functional Description

TSD Thermal Shutdown Function
Reverse Current Protection Reverse Current Protection
Current Limit Overcurrent Protection
ISC Short Current Protection
Inrush Current Limit Inrush Current Protection
Constant Slope Constant Slope Function
ECO mode ECO Function
Auto Discharge Auto Discharge Function
External Driver External Output Driver Transistor

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