LT3755EUD-2#TRPBF

Voltage - Output:	75V
Base Part Number:	LT3755
Supplier Device Package:	16-QFN-EP (3x3)
Package / Case:	16-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C (TJ)
Applications:	--
Dimming:	Analog, PWM
Frequency:	100kHz ~ 1MHz
Current - Output / Channel:	--
Series:	--
Voltage - Supply (Max):	40V
Voltage - Supply (Min):	4.5V
Number of Outputs:	1
Internal Switch(s):	No
Topology:	Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost)
Type:	DC DC Controller
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to LT3755EUD-2#TRPBF

The LT3755EUD-2#TRPBF is a programmable flexible LED driver suitable for a variety of applications, providing the exact level of dimming control and efficiency required. This product is part of the Linear Technology line of PMIC (Power Management ICs) and LED Drivers, which are tailored for the power management requirements of numerous applications.The LT3755EUD-2#TRPBF is a simple and cost-effective solution for driving heavy-duty dimming applications such as LED lighting and display backlighting. This device replaces up to four discrete control ICs and components, reducing design and manufacturing costs.

Features of LT3755EUD-2#TRPBF

The LT3755EUD-2#TRPBF features an internal dithering frequency generator that provides stable and accurate dimming. It’s output voltage and current are adjustable from 2 V to 42 V and from 0 A to 1.5 A, respectively. In addition, the LT3755EUD-2#TRPBF provides thermally and optically enhanced protection for increased reliability and safety.The LT3755EUD-2#TRPBF also boasts an adjustable soft-start feature and two-step timer dimming, enabling improved stability and control at lower dim levels. The device requires very few external components, saving design time and costs in building the circuit.

Usage and Applications of LT3755EUD-2#TRPBF

The LT3755EUD-2#TRPBF is designed for use in heavy-duty industrial and general lighting applications, as well as in displays, handhelds and any other application where dimming is required. It is suitable for both switched and linear current-regulator applications.In addition to its ability to drive large external LEDs, this device can also be used to drive a variety of LCDs, OLEDs, and display backlighting. It is also suitable for replacing linear transformers in other applications.

Working Principle of LT3755EUD-2#TRPBF

The LT3755EUD-2#TRPBF uses a constant off-time architecture. This allows for low output ripple, fast turn-on and turn-off times, and a low minimum output current. The device comprises two high-side buck controllers, one for each string, with the internal dithering frequency generator providing the surge protection between the two.The LT3755EUD-2#TRPBF also contains an internal oscillator and two separate PWM circuits, which can be programmed separately for dimming control. The dimming is based on the average of the two PWMs, and is provided by an external sense resistor. In order to obtain an LED dimming range of 0-100%, the device provides excellent dimming range and resolution.

Conclusion

The LT3755EUD-2#TRPBF is a programmable flexible LED driver designed for use in a variety of applications, providing the exact level of dimming control and efficiency required. This device is part of the Linear Technology line of PMIC and LED Drivers, which are tailored for the power management requirements of numerous applications.The LT3755EUD-2#TRPBF is a simple and cost-effective solution for driving heavy-duty dimming applications such as LED lighting and display backlighting. It also features adjustable soft-start and two-step timer dimming, enabling improved stability and control at lower dim levels. This device requires very few external components, saving design time and costs in building the circuit.The LT3755EUD-2#TRPBF uses a constant off-time architecture, providing low output ripple, fast turn-on and turn-off times, and a low minimum output current. Its ability to drive external LEDs, LCDs, OLEDs and display backlighting allows it to replace linear transformers in a variety of applications, reducing design and manufacturing costs. With its excellent dimming range and resolution, the LT3755EUD-2#TRPBF is an ideal solution for providing heavy-duty dimming control and efficiency.

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