LT3497EDDB#TRPBF

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

LT3497EDDB#TRPBF is a high-efficiency and low-cost LED Driver by Linear Technology. It is a monolithic controller IC with a wide input voltage range from 6V to 80V. The LT3497EDDB#TRPBF LED driver is optimized for dimming LED lighting applications, such as automotive, industrial, and residential applications. The controller provides regulated and dimmable LED current without the use of an external power MOSFET switching element, thus eliminating power efficiency losses associated with an external MOSFET.

Application Fields

The LT3497EDDB#TRPBF LED driver is ideal for applications where thermal efficiency and size are critical, such as automotive and industrial LED lighting. It can be used to drive up to four strings of LEDs, allowing the end users to control the brightness and reduce the energy consumed by the LED lights, without sacrificing light intensity. The LED driver offers dimming capabilities through a variety of dimming methods including pulse width modulation (PWM) and analogue dimming. In addition, it provides a constant LED current for uniform output and a programmable oscillator for PWM rate adjustment.

Working Principle

The LT3497EDDB#TRPBF LED driver operates by converting an input supply voltage into an appropriate regulated current output to the LEDs. The device integrates an internal high-side power MOSFET, along with an operating current sense circuit, to provide accurate current regulation for the LEDs. The internal compensation of the device reduces the conventional external component count, and further provides a thermally transient-robust control loop, allowing LEDs to operate in a wide temperature range. The LT3497EDDB#TRPBF also contains both a frequency spread spectrum and hysteretic current limit features to minimize EMI.

The operating current is programmable by an external resistor. The PWM dimming mode can be enabled by either of the two PWM dimming pin buffers, the frequency of which is determined by the internal oscillator. The low-side current-sense amplifier provides both current limit and over-temperature protection. The device supports two different dimming modes, Analog Dimming and Programmable Brightness Cascading Dimming. The LT3497EDDB#TRPBF is available in a Thermally Enhanced 10-Lead LQFN package.

Conclusion

In conclusion, the LT3497EDDB#TRPBF LED driver is a high-efficiency, low-cost design for LED lighting applications. It can be used to drive up to four strings of LEDs and offers dimming capabilities through a variety of dimming methods. The LED driver also integrates an internal high-side power MOSFET, along with an operating current sense circuit, to provide accurate current regulation for the LEDs. The LT3497EDDB#TRPBF is available in a thermally enhanced 10-Lead LQFN package, and is well suited for automotive, industrial, and residential applications.

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