ON Semiconductor Announces Ultra-High Power Supply Rejection Ratio LDO Regulator

ON Semiconductor has released a series of new ultralow noise low dropout regulators with the industry's best power supply rejection ratio (PSRR) to achieve better performance in noise-sensitive analog designs.

The new NCP16x family, together with its automotive variants, also meets the AEC-Q100 specification for the NCV81x, providing better performance in a variety of applications, such as the ADAS image sensor module, portable devices and 802.11 Ad WiGig, Bluetooth and WLAN wireless applications.

The NCP16x family includes four devices with input voltages ranging from 1.9 to 5.5 volts (V) to support a wide range of end applications. Output currents are 250 mA, 450 mA, and 700 mA in the same package, making the design easy to expand The 98dB ultra-high PSRR prevents unwanted supply noise from reaching the sensitive analog circuitry, while the ultra-low noise of 6.5uV rms eliminates the need for additional output capacitors.

The new LDO regulator has a low dropout voltage of 80mV to support and help extend the life of battery-powered end products. This is further enhanced by no-load quiescent current of only 12uA. These devices provide fixed outputs from 1.2 V to 5.3 V. Voltage, +/-2% accuracy over the entire application range. Only 1 uF of input and output capacitors achieve stable operation, reducing system cost and size.

The new device family uses a new patented architecture to achieve ultra-high PSRR performance and expands ON Semiconductor’s leadership in this field, providing high PSRR over a wide frequency range (10 kHz to 100 kHz) for end applications Performance is very important. For example, in the ADAS camera's image sensor applications, the NCV8163 improves image quality by filtering out power supply noise to prevent power supply noise from damaging the voltage signal applied to the pixel. In wireless applications such as WiGig 802.11ad, NCP167 has both The ultra-high PSRR has ultra-low noise to ensure that the system's power-per-bit performance is achieved by providing a clean power supply.

It is reported that the NCP16x series has improved PSRR, which is 30 dB higher than some conventional LDOs. LDO is still the best solution for low-current applications. Its small size and higher PSRR performance level and low noise are noise-sensitive radio frequency (RF). ) and ideal power management solutions for image sensor applications.

The NCP16x is available in TSOP-5, XDFN-4 and WLCSP-4 packages. The automotive variant NCV816x is available in TSOP-5 and XDFN-4 packages. All devices are suitable for modern high-density designs.

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