LT3517HUF#PBF

Series:	True Color PWM™
Packaging:	Tube
Part Status:	Active
Type:	DC DC Regulator
Topology:	Step-Down (Buck), Step-Up (Boost)
Internal Switch(s):	Yes
Number of Outputs:	1
Voltage - Supply (Min):	3V
Voltage - Supply (Max):	30V
Voltage - Output:	--
Current - Output / Channel:	1.5A (Switch)
Frequency:	250kHz ~ 2.5MHz
Dimming:	Analog, PWM
Applications:	Backlight
Operating Temperature:	-40°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	16-WQFN Exposed Pad
Supplier Device Package:	16-QFN (4x4)
Base Part Number:	LT3517

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<p>LT3517HUF#PBF is a high performance power management integrated circuit (PMIC). It is specifically designed for driving a wide-ranging array of LED applications. The LT3517HUF#PBF is dedicated to making sure the operation is stable and efficient.</p><h2>Application Field of LT3517HUF#PBF</h2><p>The LT3517HUF#PBF IC is used as an LED driver for a range of light emitting applications such as LED backlighting, LED lighting, and LED display. Its features are best suited for driving high current LED strings. It can drive up to 60V input sources at power levels up to 15W.</p><p>LT3517HUF#PBF is designed to operate with a variety of LEDs used in non-isolated LED buck converters. It also supports a wide range of LED topologies and works with all power elements. Additionally, it is suitable for a wide range of LED voltages and currents up to 48V, 800mA.</p><p>In addition to driving LED applications, the LT3517HUF#PBF can also act as a smart regulator for battery powered applications. Its quasimode operation will enable user-defined load sharing and current sharing between multiple regulated sources.</p><h2>Working Principle of LT3517HUF#PBF</h2><p>The LT3517HUF#PBF is a fully integrated, high-performance power management IC. It combines all the essential power elements into a single package: an LDO, a buck-boost, a buck, and an inverter. It is designed to provide superior efficiency and reduce power dissipation in a wide range of LED applications.</p><p>The LT3517HUF#PBF works by regulating the forward current of a LED string based on the LED driver current set-point set by the user. The device features a wide input voltage range and is able to rapidly adjust the LED string voltage to maintain the LED string forward current within the LED\'s specified current range. It also offers current regulation for multiple LEDs connected in series and parallel, allowing for different voltage drops and currents on different LEDs.</p><p>The LT3517HUF#PBF supports constant current and constant voltage LED driver topologies. The device can work in either mode - the user inputting the desired current or voltage level. It is also capable of pulse-width modulation (PWM) dimming, allowing the user to adjust the brightness of the LEDs without affecting efficiency.</p><p>The LT3517HUF#PBF allows for a wide array of digital control over the LED driver. Some of the more common digitally controlled features include voltage and current set-points, enable and disable, output voltage sensing, and voltage indicators. Additionally, the digital pins enable dynamic tuning of the LED driver performance.</p><p>The LT3517HUF#PBF is capable of detecting and controlling variances in the input and output voltages and currents. It has the ability to quickly adjust the load current to maintain the desired output level when the input voltage changes. </p><p>Overall, the LT3517HUF#PBF is a very efficient and reliable LED driver. It provides excellent performance, and its wide range of features makes it the perfect option for all kinds of LED lighting applications.</p>

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