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Ultra-Low Noise Voltage Regulator with High PSRR for In-Vehicle Camera System and High Precision Sensing System

Ultra-Low Noise Voltage Regulator
Ultra-Low Noise Voltage Regulator

Nisshinbo Micro Devices Inc. has launched an ultra-low noise, high PSRR voltage regulator NR1640 that features 200 mA output current and 5.5 V maximum input voltage. This new regulator with noise characteristics of 6 μVrms and high ripple rejection of 80 dB or more is ideal for high precision sensing systems and in-vehicle camera systems. Moreover, it features an auto discharge function option that will contribute to make the output shutdown fast to discharge output capacitance with internal discharge FET.



  • Input Voltage Range (Maximum Rating): 2.7 V to 5.5 V (6.5 V)

  • Operating Temperature Range: −40°C to 125°C

  • Output Voltage Range: 2.5 V to 4.8 V

  • Output Current: 200 mA

  • Quiescent Current: Typ.350 µA

  • Output Noise Voltage: Typ.6 µVrms (IOUT = 100 mA)

  • Thermal Shutdown Function: Typ.165°C

  • Slope of Output Voltage at Start-up: 55 / 110 / 220 / 440 µs/V



  • Industrial equipment which requires noise immunity such as FA and smart meter.

  • Equipment used under high-temperature conditions such as surveillance camera and vending machine.

  • Equipment accompanied by self-heating such as motor and lighting.

Component Datasheet

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