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

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.

Features

• 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

Applications

• 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.