FAN5776UCX Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	DC DC Regulator
Topology:	Step-Up (Boost)
Internal Switch(s):	Yes
Number of Outputs:	5
Voltage - Supply (Min):	2.3V
Voltage - Supply (Max):	5.5V
Voltage - Output:	3.5 V ~ 8.5 V
Current - Output / Channel:	25mA
Frequency:	1.8MHz
Dimming:	PWM
Applications:	Backlight
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	12-UFBGA, WLCSP
Supplier Device Package:	12-WLCSP (1.42x1.67)
Base Part Number:	FAN5776

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Introduction
The FAN5776UCX is a PMIC (Power Management Integrated Circuit) specifically designed for LED (Light Emitting Diode) driver applications. This is a unique and advanced IC that functions in a variety of LED applications, from automotive headlight illumination to LED backlighting for LCD displays.Overview and Benefits
The FAN5776UCX IC is capable of achieving high efficiencies and reliability in LED applications by utilizing its advanced features. It is designed to operate up to an internal voltage of 42V, and can thus, support a wide range of LED lighting systems. Furthermore, it is also programmable to achieve a variety of functions such as constant current or constant voltage control.The FAN5776UCX also offers a wide range of protection features that ensure the safety of the user and the system. These features include, over-voltage protection, reverse-current protection, and an adjustable current limit function. In addition, this IC also supports a number of other features such as dimming, feature enable, and thermal shutdown.Overall, the FAN5776UCX is an ideal LED driver PMIC that offers a wide range of features and benefits making it suitable for a variety of LED lighting applications.Working Principle
At the core of the FAN5776UCX is its built-in constant current/voltage controller. This controller is activated when the enable pin is set to logic high, and begins regulating the constant current or constant voltage based on the current sensing or voltage feedback respectively.The feedback voltage is adjusted by the onboard circuit, depending on the set current or output voltage. The external resistor network is then used to set the required current limit or voltage threshold.The current limit is the maximum output current allowed and the voltage threshold is the level at which the output voltage is determined. The output of the FAN5776UCX is also adjusted by pulse-width modulation (PWM) dimming and analog dimming when used with compatible sink circuits.Finally, the FAN5776UCX offers a number of protection functions for both the user and the system, such as over-current protection, over-voltage protection, and reverse-current protection.Conclusion
The FAN5776UCX is a PMIC specifically designed for LED driver applications. It utilizes its advanced features to achieve high efficiencies and reliability in LED applications while also offering a wide range of protection features. Its core function is a constant current/voltage controller, which is regulated based on the current sensing or voltage feedback. In addition, it also supports a number of other features such as dimming, feature enable, and thermal shutdown. This makes the FAN5776UCX ideal for a variety of LED lighting applications.

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