LT3477EUF#TRPBF

Voltage - Output:	--
Base Part Number:	LT3477
Supplier Device Package:	20-QFN (4x4)
Package / Case:	20-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	--
Dimming:	PWM
Frequency:	200kHz ~ 3.5MHz
Current - Output / Channel:	3A (Switch)
Series:	--
Voltage - Supply (Max):	25V
Voltage - Supply (Min):	2.5V
Number of Outputs:	1
Internal Switch(s):	Yes
Topology:	Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost)
Type:	DC DC Regulator
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LT3477EUF#TRPBF – PMIC – LED Drivers

LT3477EUF#TRPBF is a product from Linear Technology Corporation, a major manufacturer of power semiconductor devices. This device is an integrated circuit that provides power management for digital displays, LEDs, and other high power devices. The product is classified under PMIC (Power Management ICs), and its primary application field is for the driving of high power LEDs.The LT3477EUF#TRPBF consists of two main components: the main IC and a companion IC. The main IC is a buck-boost regulator that works to maintain a constant output voltage level across a large range of input voltages. This buck-boost topology is ideal for driving high power LEDs, as it allows the power supply to smoothly transition between buck and boost modes. The output voltage can be precisely controlled, allowing the circuits to be optimized for each application.The companion IC (LT3478EUF#TRPBF) works in tandem with the main IC to provide additional protection, current regulation, and dimming capabilities. The companion IC is designed to respond to on/off signals, allowing the LED current to be logically controlled by the microcontroller. Furthermore, the companion IC provides gate drive control signals, allowing the LED drivers to be synchronized with the rest of the system.The LT3477EUF#TRPBF and LT3478EUF#TRPBF can be combined to form a highly integrated and efficient LED driver. With the combined circuit, the LED current can be seamlessly regulated and controlled, and the device can tolerate wide input voltage variations. This combination makes the LT3477EUF#TRPBF and LT3478EUF#TRPBF LED driver an ideal solution for any LED display application.The main benefit of the LT3477EUF#TRPBF and LT3478EUF#TRPBF LED driver is its low total component count. Compared to discrete LED drivers, the IC solution requires fewer components, reducing the overall complexity of the circuit. Moreover, the combination of the ICs eliminates the need for additional expensive components such as power diodes and inductors. This advantage leads to lower cost, reduced board space, and minimal power dissipation.In conclusion, the LT3477EUF#TRPBF and LT3478EUF#TRPBF are a highly integrated and efficient solution for driving high power LEDs. The dual IC package provides the capabilities of a discrete-component LED driver, with a minimal component count. The capability to tolerate wide input voltage and temperature variations makes this device suitable for a variety of applications. Finally, the feature and cost advantages provided by this integrated solution make it an ideal choice for any LED display application.

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