Low Noise and Dropout Voltage with New LDO Regulators

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The new NCP 16x enables better performance in noise-sensitive analogue designs and deliver improved performance in the applications such as automotive ADAS image sensor modules and portable devices

ON Semiconductors have introduced a new ultra-low noise LDO regulators. The new NCP16x series along with the AEC-Q100 qualified NCV81x automotive variants, delivers improved performance in automotive and wireless applications.

LDO regulators enable easy scalability of designs

The NCP16x series comprises four devices with a wide input voltage range from 1.9 to 5.5 volts(V) to support a variety of end applications. An Output current of 250 milliamperes (mA), 450 mA and 700 mA in a common package footprint enables easy scalability of designs.

They are available in fixed output voltages from 1.2 V to 5.3 V with an accuracy of +/- 2% over the entire application range. Stable operation is achieved with only 1 μF of capacitance on the input and output enabling lower system cost and size.

The new NCP16x series, along with the AEC-Q100 qualified NCV81x automotive variants, delivers improved performance in applications such as automotive ADAS image sensor modules, portable devices and wireless applications – including 802.11ad WiGig, Bluetooth and WLAN.

Low dropout voltage

Ultra high PSSR (Personal Safety and Social Responsibility)of 98 decibels (dB) blocks unwanted power supply noise of 6.5 microvolts (uV) and RMS eliminates the need for additional output capacitance. The new LDO regulators have a low dropout voltage of 80 millivolts (mV), supporting and helping to prolong the operating life of battery powered end products and it is further supported by a no-load quiescent current of just 12 microamperes (μA).

The combination of ultra-high PSRR and ultra-low noise ensures the power-per-bit efficiency capability of the system is realized by providing a clean power supply.

New patented architecture

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A new patented architecture is implemented to achieve the ultra-high PSSR performance. Providing high PSSR over a wide frequency range (10 kHz to 100 kHz) is important to end application performance. It also ensures the power-per-bit efficiency capability of the system is realized by providing a clean power supply.
NCP16x devices are available in TSOP-5, XDFN-4, and WLCSP-4. NCV816x Automotive variants are available in TSOP-5 and XDFN-4. All are suitable for modern high-density designs. This new series of ultra-low noise LDOs improves PSRR, exceeding some conventional LDOs by 30 dB.

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