ALD214012PJ111

Dimming:	Analog, PWM
Weight:	0.02 lb (9.07g)
Approvals:	--
Mounting Type:	Chassis Mount
Size / Dimension:	3.35" L x 0.85" W x 0.20" H (85.0mm x 21.5mm x 5.0mm)
Termination Style:	Connector
Efficiency:	--
Operating Temperature:	-30°C ~ 85°C
Ratings:	--
Features:	Remote On/Off, OVP
Series:	ALD
Power (Watts):	6W
Current - Output (Max):	140mA
Voltage - Output:	44V (Max)
Voltage - Input (Max):	13.2V
Voltage - Input (Min):	10.8V
Number of Outputs:	2
Topology:	Boost
Type:	Constant Current
Part Status:	Active

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ALD214012PJ111 Led Drivers

Led drivers are a kind of electrical components that are used to control an LED light. The LED driver is used in a variety of applications due to its many advantages such as reliability, efficiency, and smaller size. In this article, we will discuss the application field and working principle of the ALD214012PJ111 LED driver.

Application Field

The ALD214012PJ111 LED driver is a high-precision constant-current LED driver designed for interior lighting applications such as ceiling lights, desk lamps, and so on. This driver is suitable for most high bright LED light modules and linear LED light fixtures. It also provides dimming capability with selectable DC dimming level from 0 to 100%.The ALD214012PJ111 LED driver features a wide operating temperature range (-40 to +85° C) and high reliability due to its low surge immunity and robust current-limiting circuit. This driver is designed with low stand-by current consumption and is suitable for a variety of switch-mode power supply designs. It is also protected against over-temperature, under-voltage, and over-current.

Working Principle

The ALD214012PJ111 LED driver is a constant-current LED driver that uses a two-stage pulse width modulation (PWM) control method to control the LED current. The first stage is used to adjust the peak current and the second stage is used to set the pulse width of each cycle.The first stage of the control circuit is a voltage-controlled current source. This current source has a variable voltage drop across it that determines the peak current of the LED driver. This voltage is set using an external resistor and varies the resistance value which in turn varies the peak current of the LED driver.The second stage of the control circuit is a current-mode PWM control circuit. This circuit uses a comparator to compare a reference voltage to the voltage across a current sense resistor in order to generate a PWM signal. The duty cycle of this PWM signal is used to set the current level of the LED driver, and the frequency of the PWM signal is adjustable.

Conclusion

In conclusion, the ALD214012PJ111 LED driver is a high-precision constant-current LED driver designed for interior lighting applications. It has a wide operating temperature range and various features such as low stand-by current consumption, over-temperature, under-voltage, and over-current protection. It uses a two-stage PWM control method to control the LED current and its peak current and duty cycle are adjustable with an external resistor.

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