NR1641 Series
1A Equipped with Low Power Mode Ultra-Low Noise Low Dropout Voltage Regulator

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  • Description

    The NR1641 series are CMOS based low dropout voltage regulator that achieves both ultra-low output noise, high ripple rejection, high-speed response characteristics, and low quiescent current. The MODE pin input voltage can be used to select between the automatic alternative mode and the fixed fast mode. The automatic alternative mode changes the internal mode between low power mode and the fast mode according to the load current. In addition, Slope of Output Voltage at Start-up can be selected from 200 μs/V or 500 μs/V. By this option, depending on the capacitance connected to the output pin, the inrush current limit can be changed.

    Since the NR1640 has low quiescent current, low noise, and high ripple rejection, it is suitable for IoT devices, battery-powered devices, and the noise sensitive analog application.

  • Spec
    Input Voltage Range 1.7 V to 5.5 V (6.5 V)
    Operating Temperature Range -40°C to 85°C (125°C)
    Supply Current Low Power Mode: Typ. 17 µA
    Fast Mode: Typ. 1.5 mA
    Standby Current Typ. 0.01 µA
    Output Voltage Range 1.0 V to 5.0 V
    Output Voltage Accuracy ±1.0% (VSET ≥ 1.8 V, Ta = 25°C)
    Dropout Voltage Typ. 0.10 V (IOUT = 500 mA, VSET = 2.8 V)
    Typ. 0.20 V (IOUT = 1000 mA, VSET = 2.8 V)
    Ripple Rejection Typ. 75 dB (f = 1 kHz, VSET = 2.8 V)
    Typ. 80 dB (f = 10 kHz, VSET = 2.8 V)
    Typ. 85 dB (f = 100 kHz, VSET = 2.8 V)
    Package DFN1616-6-GY, HSON-6-GU

    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.

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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,ECO mode,Auto Discharge