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LDO Regulators & Linear Voltage Regulators

Overview
Products
New Products
Technical Documentation

Low Dropout Regulators (LDO) and Linear Regulators (Vreg) provide an optimum solution for low power, space conscious and low noise design requirements. The simplicity of design and few external components make them easy to integrate into the final product. ON Semiconductor offers a broad portfolio of products featuring high PSRR, low noise, low quiescent current (Iq), low dropout and wide input voltage range. As a market leader many of the parts provide the industries best performance. With robust design and high quality manufacturing it provides an ideal solution for Automotive, Industrial and Consumer applications. Package options including the smallest size in the industry to larger power packages providing a solution for any application.

Product Family

Automotive LDO & Voltage Regulators

Offering a robust design with AEC-Q100 and PPAP support. High voltage battery connected and low voltage post regulation with a wide temperature range, up to +150°C.

Industrial LDO & Voltage Regulators

A wide input voltage range and a long product support lifecycle. Providing a high accuracy and excellent line/load transient regulation

Consumer LDO & Voltage Regulators

Industry leading performance combined with smallest packaging options and easy design implementation.

Ultra High PSRR LDO

Blocks input voltage from upstream SMPS or other noise generating environment.

Ultra Low Noise LDO

Provides a clean power supply with increased accuracy and filters noise from upstream SMPS.

Low Dropout LDO

High efficiency operation with very low input-to-output voltage differential (dropout).

Low Quiescent (Iq) LDO

LDO’s with a Low IQ allow an efficient consumption of power in operational and inactive application modes, thus extending battery life.

Wide Input Voltage LDO

Wide Vin LDO’s allow from 10 V to 700 V on the input for applications with high power or high voltage regulation requirements.

Voltage Regulator

Robust and reliable linear voltage regulators with Vin up to 40 V.

Featured New Products

NCV8187: LDO Regulator, 1.2 A
  • Low Iq of 30 µA typical over full temperature range
  • High PSRR of 85 dB at 1 kHz for power stability
  • Low noise of 9 µV(RMS)
NCV8730: LDO Regulator, 150 mA
  • Low quiescent current of 1 µA typical, and shutdown current of 100 nA typical
  • Wide operating input voltage range of 2.7 to 38 V
  • Low dropout of 290 mV typical at 150 mA, 3.3 V

Videos

Automotive LED RGB Lighting Evaluation Board with NCV7685 Drivers, NVC8170 LDO, and RSL10 SiP

The LED RGB lighting evaluation board for automotive applications provides a cost-efficient lighting solution demonstration on the reference design for intelligent...

How to Achieve a 10 Year Battery Life in Medical, Surveillance, and Agriculture IoT Applications

Today we’ll be explaining how to achieve a 10 Year Battery Life in Medical, Surveillance, and Agricultural IoT Applications.

NCP16x and NCV816x High PSRR LDO Regulator Introduction and Automotive Imaging Use Case

The NCP16x and NCV816x are a series of LDO Regulators that provide superior noise reduction at higher frequencies for mobile phone and surveillance cameras.

Product Resources

Application Note

Automotive Imaging Power Architecture and Design

Imaging system input and intermediate voltages play a critical role in total system efficiency, performance, and component selection. Proper selection of these voltages depend on multiple system variables, such as: total power consumption of the image sensor/ISP, regulator efficiency, and resistance of the coax cable and filter.

Application Note

A Guide to Choosing the Right Ultra - Low IQ Low Dropout Linear Voltage Regulators

One of the most important challenges today in designing electronic applications is to minimize the power consumption of the system. To accomplish this, most systems utilize various low power modes which help to minimize the overall power consumption.

Design Note

NCP171- LDO Regulator, Dual Mode Ultra Low Iq

The fast growth of battery powered wireless IoT devices has created a major design challenge for designers in achieving the 10-year battery life objective. A common approach to extending battery life has been to take advantage of the dual mode operation...

Blog

What is LDO Noise? - Part I

Today, we will go further into detail about what noise means, how it is specified and discuss what LDOs ON Semiconductor offers with ultra-low noise. Noise is divided into two categories: intrinsic and extrinsic. Intrinsic noise is unavoidable, every electronic device makes intrinsic noise. A LDO is supplied from ideal source, this means it is not affected by external influences, therefore there is no external noise at the input (though a LDO does have intrinsic noise at the output).Extrinsic noise is every noise which is generated by external influences (ripple at the input – real source).

Blog

What is Integral Noise? - Part II

Today, we will go further into detail about what integral noise means. Integral noise value is derived from the integral of the spectral noise density function. However, it is too complicated to express any curve by function and integrate it. It is easier to divide the measured curve in small parts. If the frequency difference fn - fn-1 of each part goes to 0, then the sum of all contributions is equal to the integral of the function.

Blog

What is PSRR? - Part III

Today, we will focus on Low Dropout Regulator parameters and features surrounding Power Supply Rejection Ratio (PSRR) and how it is impacted by the application's condition. The LDOs PSRR performance is not only impacted by the regulation loop performance but also the performance of a few key internal control circuits. Voltage ripple from the power supply passes through various internal blocks and affects output performance.

Blog

Power Supply Rejection Ratio (PSRR) Real-World Perspective - Part IV

In the current article, we will focus on power supply rejection ratio (PSRR) from a real-world perspective. It can help to connect the datasheet numbers with scope measurements. First of all, it has to be said that in every electronic system (even with linear regulators only) where multiple load points are presented the output voltage ripple can occur and could affect other parts. So let´s explain PSRR in real scope measurements. When PSRR is shown on a datasheet, it’s measured as the ratio between voltage ripple at the input and the output. The measurement itself is relatively simple if a few rules are kept in mind.

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