NCP5009DMR2 Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LEDs (Light Emitting Diodes) are now commonly used in a variety of applications ranging from lighting to display backlighting. Driving LEDs can be quite a complex task due to their varying forward voltages, which depend on the type of LED being used. It is also important to ensure that LEDs are supplied with maximum current while not exceeding the maximum allowable current and voltage in order to ensure they receive adequate power and lifespan.

The NCP5009DMR2 is a Regulated Resistor Plus Inductor (RPI) PMIC (Power Management Integrated Circuit) designed for LED drivers applications. The device integrates a boost converter, a low dropout (LDO) linear regulator, and a pulse width modulation (PWM) dimmer for high current LED backlighting applications in mobile phones, digital cameras, display panels, and general LED backlight applications.

NCP5009DMR2 Application Field

The versatile NCP5009DMR2 is a feature rich device with different features specifically designed to drive LEDs. With its embedded LDO, the device is able to handle high electrical loads in a very efficient way. This allows the device to be used in a wide range of applications such as LCD TV sets, automatic lighting systems, automotive lighting, camera phones, and many other LED lighting systems. Additionally, the device’s boost regulator is able to provide constant-current control which ensures that all current supplied to the LED is regulated and does not exceed the maximum rating for the LED.

The device also features a programmable dimming ratio set to 0-100%. This allows LED light levels to be set easily as well as change with the environment. The device can be used as a low-side switch, ideal for low-side switching applications such as LED backlighting. The device also includes three preset safety functions including short-circuit protection and thermal protection.

NCP5009DMR2 Working Principle

The NCP5009DMR2 operates by boosting the input voltage and regulating the output current with a low dropout (LDO) linear regulator and a pulse width modulation (PWM) dimmer. The device integrates a boost converter with a switching frequency of 1Mhz. The boost converter receives an input voltage from a DC source and increases it to an appropriate value to drive the LEDs with the necessary amount of current. The boost regulator has an under-voltage lockout (UVLO) built in to prevent operation at a voltage which is too low for the boost converter to operate. The boost regulator also enables constant current output, ensuring that the LEDs are supplied with a constant level of current.

The LDO regulator is used to regulate the output voltage of the boost converter. The regulator is able to run with an input voltage between 1.6 V and 5.5 V and has an adjustable output voltage range of 0.75 V to 6 V. The regulator is capable of providing an output voltage of up to 6 volts, which is a sufficient voltage to drive LEDs. The regulator also has an adjustable output current limit of up to 1 A. The adjustable current limit allows the regulator to limit the output current to the LEDs, preventing any damage to them due to excess current.

The PWM dimmer is used to regulate the LED brightness. The PWM dimmer is able to adjust the LED brightness from 0% to 100%. This allows LED brightness to be adjusted easily and efficiently. The dimmer also allows for dimming ratio adjustment, enabling the LED brightness to be adjusted according to the ambient light conditions.

The NCP5009DMR2 also includes a number of other features such as thermal protection and short-circuit protection. The device also has a standby function which allows it to enter a low power state when not in use, and a power-down function which disables the device.

The NCP5009DMR2 PMIC is a high-performance device specifically designed for driving LEDs in various applications. Its integrated boost converter, LDO linear regulator, and PWM dimmer enable the device to regulate and drive LEDs efficiently and effectively. The device is suitable for a wide range of applications, and its multiple safety features ensure that operation does not exceed the maximum allowed load and temperature.

The specific data is subject to PDF, and the above content is for reference