NCP1840Q8A6MNG

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Type:	DC DC Regulator
Topology:	Switched Capacitor (Charge Pump)
Internal Switch(s):	Yes
Number of Outputs:	8
Voltage - Supply (Min):	3V
Voltage - Supply (Max):	5.5V
Voltage - Output:	4.1V
Current - Output / Channel:	30mA
Frequency:	--
Dimming:	PWM
Applications:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	20-VFQFN Exposed Pad
Supplier Device Package:	20-QFN (4x4)
Base Part Number:	NCP1840

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Overview of PMIC - LED Drivers

Power management integrated circuits (PMICs) are specialized computer chips which are used to control, monitor and switch the electrical current supply to integrated circuits, devices and electrical appliances. PMICs can be used in many different applications and are often used for controlling and regulating lighting. LED drivers are a type of PMIC that are specifically designed for driving Light Emitting Diodes (LEDs).

Working Principle of LED Drivers

The working principle of LED drivers is relatively simple. LED drivers supply current to the LED and regulate the amount of current so the LED operates at the desired brightness level. LED drivers can do this by modulating the input voltage or current, or both, in order to bring the output down to a desired level.The amount of current that an LED driver supplies to an LED is measured in amps. Current output is an important consideration when selecting a LED driver because it determines the brightness of the LED. The current supplied to an LED is known as "forward current" because it flows through the LED in the forward direction.

NCP1840Q8A6MNG Application Field and Working Principle

The NCP1840Q8A6MNG from ON Semiconductor is an integrated high-speed driver for LEDs. It is an 8A, 40V, full bridge power stage in a very small 5mm x 7mm package. The device is designed for driving high-power LEDs with high switching frequencies in lighting applications such as LCD backlighting.In terms of working principle, the NCP1840Q8A6MNG has two differential inputs and two differential outputs. The differential inputs allow the device to measure and adjust the output current accurately while fractional current setting provides superior performance in applications that require the use of dimmers or color mixing. The device is also designed to minimize EMI and RF interference while increasing efficiency and reliability.The NCP1840Q8A6MNG features a switching frequency of up to 1MHz, 8A peak/average current drive capability, and up to 40V output. The output voltage is adjustable over a wide range, and the device is also capable of self-diagnostics and digital brightness level control with a PWM signal.In order to maximize efficiency and performance, the NCP1840Q8A6MNG is optimized for high-speed LED drivers. The device includes integrated MOSFETs which allow for low conduction losses and the ability to achieve high switching speeds and accurate current control. The NCP1840Q8A6MNG also includes a low-side switch for low-frequency operation, allowing for extended battery life and improved system performance in applications such as LCD backlighting and automotive applications.

Conclusion

The NCP1840Q8A6MNG from ON Semiconductor is an integrated high-speed driver for LEDs. It is designed for driving high-power LEDs with high switching frequencies in lighting applications such as LCD backlighting. The device features a switching frequency of up to 1MHz and 8A peak/average current drive capability, as well as up to 40V output. The device also includes integrated MOSFETs which allow for low conduction losses and the ability to achieve high switching speeds and accurate current control. The NCP1840Q8A6MNG is an ideal solution for high-speed LED drivers in applications such as LCD backlighting and automotive applications.

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