LT3498EDDB#TRPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	DC DC Regulator
Topology:	Step-Up (Boost)
Internal Switch(s):	Yes
Number of Outputs:	1
Voltage - Supply (Min):	2.5V
Voltage - Supply (Max):	12V
Voltage - Output:	32V
Current - Output / Channel:	20mA
Frequency:	2.3MHz
Dimming:	Analog, PWM
Applications:	Backlight
Operating Temperature:	-40°C ~ 85°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	12-WFDFN Exposed Pad
Supplier Device Package:	12-DFN (3x2)
Base Part Number:	LT3498

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PMIC - LED Drivers

The LT3498EDDB#TRPBF is a special integrated circuit (IC) designed to control the current flow of an LED, especially in an array of LEDs. LEDs can require significant current to provide an adequate light output, which can be difficult to manage without specialized circuitry. The LT3498EDDB#TRPBF is a high-performance, adjustable constant-current LED driver with a wide range of output currents and input supply voltages. It is designed to provide precise and consistent current to multiple parallel strings of high-brightness LEDs.

The Working Principle of the LT3498EDDB#TRPBF

The LT3498EDDB#TRPBF is based on a switching regulator principle, where a control circuit triggers an N-channel MOSFET to switch on and off at a frequency that depends on its input voltage and output current. This switching action causes the MOSFET to draw current from the power source, through an inductor and capacitor, and deliver it to the LED load. The on-off switching action of the MOSFET is regulated by the output current sensing of the LT3498EDDB#TRPBF, meaning the output current is always within the desired range.The LT3498EDDB#TRPBF includes an adjustable current limit and a programmable soft-start function. The adjustable current limit allows the user to set the maximum current allowed, while the programmable soft-start function allows the user to set the initial current in a gradual ramp-up, reducing any inrush current. In addition, the LT3498EDDB#TRPBF also has two dedicated Enable pins for turning on and off the circuit, allowing for precise timing of current delivery.

Applications of the LT3498EDDB#TRPBF

The LT3498EDDB#TRPBF provides a simple solution to allow LEDs to be driven in an efficient, consistent and safe manner. Due to its wide range of operating voltages and output currents, it can be used in a variety of applications, including:- Lighting. High brightness LEDs can require significant current, so the LT3498EDDB#TRPBF can be used to regulate the current, allowing for a consistent light output and a longer lifetime for the LEDs. - Displays. The LT3498EDDB#TRPBF can be used in LED displays, such as for automotive dashboards, TV screens or outdoor signage. The adjustable current limit allows for precise control over the LED brightness, while the programmable soft-start prevents inrush current from damaging the circuit.- Automotive. The LT3498EDDB#TRPBF can be used in automotive lighting applications, such as head and tail lights. The constant current regulation ensures a consistent light output and the Enable pins allow for precise timing of the LED current.- Industrial. The LT3498EDDB#TRPBF can be used in industrial applications, such as mining equipment or safety lighting, where precise, consistent and safe lighting is required. The adjustable current limit allows the user to limit the amount of current in an LED circuit, reducing any risks of overloading the system.

Conclusion

The LT3498EDDB#TRPBF is a high-performance, adjustable constant-current LED driver that is designed for use in a wide range of applications. It provides precise, consistent and safe current control to multiple parallel strings of LEDs, allowing for maximum efficiency and performance. With its adjustable current limit and programmable soft-start function, the LT3498EDDB#TRPBF offers a reliable and versatile solution for controlling the current in an LED array.

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