LT3420EDD-1#TRPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Photoflash Capacitor Charger
Current - Supply:	90µA
Voltage - Supply:	2.2 V ~ 16 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	10-WFDFN Exposed Pad
Supplier Device Package:	10-DFN (3x3)
Base Part Number:	LT3420

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LT3420EDD-1#TRPBF Application Field and Working Principle

Introduction

LT3420EDD-1#TRPBF is a tiny package, high-efficiency LED Flash LED driver product based on LT3420. It provides superior accuracy, flexibility, robustness and safety in the fields of automotive, mobile, intelligent lighting and other applications. All components are in wettable form and integrated in a QFN16 package. This article will discuss the application field and working principle of LT3420EDD-1#TRPBF in detail.

Application Field

LT3420EDD-1#TRPBF is a multi-functional LED Flash LED driver product and this device can work in the following application fields:

Automotive Field

The LT3420EDD-1#TRPBF supports automotive systems requiring high efficiency and low Iq. The device supports a wide input voltage range from 4.2V to 18V, with a wide output current range of 0mA to 1A. It also has a low ripple noise, which is suitable for most automotive applications.

Mobile Field

The LT3420EDD-1#TRPBF supports mobile devices requiring high efficiency and low Iq, as well as ultra-low noise design. The device supports a wide input voltage range from 4.2V to 18V, with a wide output current range of 0mA to 1A. It also has a low ripple noise that suits most mobile applications.

Intelligent Lighting Field

LT3420EDD-1#TRPBF is suitable for intelligent lighting applications due to its wide range of operating conditions such as input voltage range from 4.2V to 18V, output current range from 0mA to 1A, ripple current capability and robustness. In addition, the device supports lighting control and brightness enable/disable control, enabling flexible integration into intelligent lighting systems.

Other Applications

Besides the above mentioned field , the LT3420EDD-1#TRPBF is also used in industrial automation, security systems, digital cameras and other applications.

Working Principle

The LT3420EDD-1#TRPBF is based on the LT3420, a constant-current FET driver controller. It uses a step up/down regulator to regulate the output current. The device has an integrated switch-mode power supply controller, enabling it to operate in a full range of modes from DC/DC step up and down. The LT3420EDD-1#TRPBF works as a bridge between the voltage source and the LED load. It also regulates the current through the LED load to maintain a consistent output, while switching the current on and off as commanded.The LT3420EDD-1#TRPBF works in a full range of modes, including buck (down) mode, boost (up) mode, and buck-boost mode. In the boost mode, the LED current is increased, while in buck mode, it is decreased, and in the buck-boost mode, the LED current is kept constant. In addition, the device also supports pulse-width modulation (PWM), allowing fast light intensity control.

Conclusion

The LT3420EDD-1#TRPBF is a tiny package, high-efficiency LED Flash LED driver product based on the LT3420. It supports a wide input voltage range from 4.2V to 18V, with a wide output current range of 0mA to 1A, and is suitable for various application fields such as automotive, mobile, intelligent lighting, industrial automation and security systems. The device also has low Iq, low ripple noise, light intensity control and robustness. All of these features make LT3420EDD-1#TRPBF an ideal choice for LED applications.

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