LC5548LD

Voltage - Output:	--
Supplier Device Package:	8-DIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 125°C (TA)
Applications:	--
Dimming:	--
Frequency:	--
Current - Output / Channel:	--
Series:	--
Voltage - Supply (Max):	20V
Voltage - Supply (Min):	--
Number of Outputs:	1
Internal Switch(s):	Yes
Topology:	--
Type:	AC DC Offline Switcher
Part Status:	Not For New Designs
Packaging:	Tube

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Introduction
The LC5548LD is an LED driver integrated circuit (IC) manufactured by Roche Electronics. It is classified as a PMIC (Power Management IC) device and is used primarily to drive LED display backlighting. This device features a duplex package containing 12 transistor drivers, built-in regulators, and a high-side current sensor that provide for improved efficiency, current control, and thermal management. The LC5548LD is well-suited for backlighting applications in consumer electronics, automotive displays, and other general applications.

Application Fields
LC5548LD is primarily used to power LED displays and backlighting, in consumer electronics, automotive displays, and other general applications. The LC5548LD LED driver integrated circuit (IC) is designed to provide a reliable and efficient LED lighting solution for applications such as LCD displays, TV screens, recorder displays, mobile phones, and tablet displays. Its high-side current sensor and built-in regulators help to ensure current control and thermal management. LC5548LD driver ICs are also well-suited for replacing analog components to reduce design time, as they are programmable and compatible with various different systems. In addition, its low input voltage and power requirements make it an ideal choice for cost-sensitive consumer products.

Working Principle
The LC5548LD driver IC works by controlling the amount of current flowing through each channel of the device. It does this by monitoring the voltage on the drain terminal of each transistor and adjusting the gate voltage accordingly. This allows the device to accurately control the backlighting output. Additionally, LC5548LD features a high-side current sensor that enables precision control of the LED brightness. The built-in regulator further enhances current control and thermal management. Furthermore, LC5548LD can be programmed to work with different systems and supports Active Level Shifting (ALS), allowing the processor to switch with ease between various voltage levels.

Conclusion
The LC5548LD driver IC is an excellent choice for applications requiring LED backlighting and efficient current management. Its built-in current sensor and regulator help ensure accurate current control and thermal management. In addition, the LC5548LD driver IC can be programmed to work with different systems and supports Active Level Shifting (ALS). This helps to make the design process less time-consuming and easier. As a result, the LC5548LD driver IC has become the preferred option for LED backlighting applications in consumer electronics, automotive displays, and other general applications.

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