NR1640 Series
200mA Ultra-low Noise Voltage Regulator

  • Description

    The NR1640 is a CMOS-based ultra-low noise, high PSRR voltage regulator featuring 200 mA output current and 5.5 V maximum input voltage. With noise characteristics of 6 μVrms and high ripple rejection of 80 dB or more @100 kHz, high quality power can be supplied, ideal for high precision sensing systems where noise is an issue.

    The slope of output voltage at startup can be selected from 4 types. These options will meet the demand of suppression of inrush current and start-up slope requirement. In addition, the auto discharge function option will contribute to make the output shutdown fast to discharge output capacitance with internal discharge FET.

  • Spec
    Industrial Automotive
    Input Voltage Range 2.7 V to 5.5 V (6.5 V)
    Operating Temperature Range -40°C to 125°C (150°C)
    Supply Current Typ. 350 µA
    Standby Current Typ. 0.1 µA
    Output Voltage Range 2.5 V to 4.8 V
    Output Voltage Accuracy ±1.0% (Ta = 25°C)
    Dropout Voltage Typ. 130 mV
    (IOUT = 200 mA, VSET = 3.3 V)
    Ripple Rejection Typ. 80 dB (f = 1 kHz)
    Typ. 80 dB (f = 100 kHz)
    Package SOT-23-5-DC
    AEC-Q100 AEC-Q100 grade 1

    Protections / Functions

    TSD Reverse Current Limit ISC Inrush Constant Slope ECO mode Auto Discharge External Driver
  • Technical
  • 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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Category:LDO Linear Regulators

min (V)
max (V)
min (V)
max (V)
Functions Constant Slope,Auto Discharge