FAN5702UC20X Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	DC DC Regulator
Topology:	Switched Capacitor (Charge Pump)
Internal Switch(s):	Yes
Number of Outputs:	6
Voltage - Supply (Min):	2.7V
Voltage - Supply (Max):	5.5V
Voltage - Output:	--
Current - Output / Channel:	30mA
Frequency:	1.2MHz
Dimming:	I²C, PWM
Applications:	Backlight
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	16-UFBGA, WLCSP
Supplier Device Package:	16-WLCSP (1.71x1.71)
Base Part Number:	FAN5702

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Introduction

FAN5702UC20X is a high-performance, integrated non-isolated buck controller suitable for driving high-power LEDs and RGB LED strings. It uses a unique architecture to accurately control the output current waveform and the output voltage waveform, helping the LEDs to maintain a consistent load. Compared to traditional solutions, FAN5702UC20X provides improved efficiency, lower EMI and better dimming performance. FAN5702UC20X is designed to be used as a LED driver to power LED lamps, LED lighting, LED displays, LED display backlighting, LED strip lighting, and general lighting applications.

Features

FAN5702UC20X has many features to offer, including:

• High efficiency: FAN5702UC20X offers up to 90% efficiency, which helps reduce system losses and improve system longevity.
• Wide Vin and Vout ranges: The LED driver supports inputs of 10-42V, and outputs of 0.5-35V.
• Small package: FAN5702UC20X comes in a small and easy-to-use SOT23-6L package that measures only 2.9 x 2.5mm.
• Accurate dimming: The LED driver has an exacting current dimming mode, with the accuracy of the ripple current kept to less than 100 ppm with a peak current of 1.5A.
• High power factor: The high power factor of FAN5702UC20X helps to eliminate voltage transients.
• Temperature protection: FAN5702UC20X has excellent protection functions that protect the device from over-temperature, as well as from over-voltage and under-voltage.

Applications

FAN5702UC20X is used for a variety of applications, including:

• LED lamps
• LED lighting
• LED displays
• LED display backlighting
• LED strip lighting
• General lighting applications

Working Principle

FAN5702UC20X uses a digital-precision dynamic current control mode to precisely control the output current waveform. This is achieved by using an internal oscillator, which creates a constant frequency combined with digital-precision short-loop control based on the LED forward voltage feedback. This helps to maintain a consistent output current despite changes in the input voltage, which helps improve system efficiency.In order to more accurately control the LED string current and output voltage, FAN5702UC20X also has a voltage loop to ensure the output voltage meets the desired accuracy. This helps increase system reliability and reduce losses associated with optical variation.In addition, FAN5702UC20X has excellent protection functions which include over-voltage protections, over-temperature protection, and other comprehensive protections. These protections help reduce system failures, and improve system longevity.

Conclusion

FAN5702UC20X is a high-performance integrated non-isolated buck controller suitable for driving high-power LEDs and RGB LED strings. It can be used in a variety of applications such as LED lamps, LED lighting, LED displays, LED display backlighting, LED strip lighting, and general lighting applications. It offers high efficiency, wide Vin and Vout ranges, small package size, accurate dimming, high power factor, and excellent temperature protection.

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