FAN5330SX

Voltage - Output:	30V
Base Part Number:	FAN5330
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	Backlight
Dimming:	PWM
Frequency:	1.5MHz
Current - Output / Channel:	35mA
Series:	--
Voltage - Supply (Max):	5.5V
Voltage - Supply (Min):	1.8V
Number of Outputs:	1
Internal Switch(s):	Yes
Topology:	Step-Up (Boost)
Type:	DC DC Regulator
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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FAN5330SX Application Field and Working Principle

LED drivers are used in electrical and electronic devices to power light-emitting diodes (LEDs). They provide the necessary control, protection and efficiency for the LEDs connected to them. Small overall size, high efficiency, accurate dimming and color control functions, high reliability, excellent EMC performance, and much more make LED drivers a desirable choice for various applications. LED drivers are categorized into various power management integrated circuits (PMICs) such as indoor LED drivers, outdoor LED drivers, and direct AC LED drivers. One such PMIC is the FAN5330SX, which is a high-brightness LED driver with advanced features, such as proprietary end port protection, dynamic voltage control, and low start-up voltage. The device has two identical high voltage switch gates that can be used as string control gates or dimming gates. It is designed to control two strings of LEDs with a maximum of 10 LEDs per string. The device also provides battery and system protection, as well as soft-start modes for initial start-up. The FAN5330SX is suitable for a broad range of applications, including indoor and outdoor LED lighting, decorative lighting, camera flash, automotive headlamps, and illuminated signs. It is highly efficient and provides excellent performance in both DC and AC circuits. The device also provides user programmability for utmost system flexibility and performance. The FAN5330SX is based on a dynamic voltage control architecture that allows it to operate from a wide input range (3V–41V) while maintaining a very low start-up voltage (1.2V). This makes the device ideal for single cell Li-Ion battery applications and allows extended battery life. The device also features proprietary end port protection, which provides protection against short-circuits, open-circuits, reverse connection and lead-frame shorts. The device has two control pins (VON/VOFF and VSTR/VSAVE) that can be used as either string control pins or to facilitate dynamic brightness control. The VON/VOFF pin is used to control the LED current when a single string is used. The VSTR/VSAVE pin serves as both the LED voltage control and the LED current control when two strings are used. The LED voltage and LED current are adjusted using an external resistor placed between the VSTR and the VSAVE pins. The FAN5330SX also features a microprocessor supervisory circuit (MPC) to monitor the system power supply and the LED strings to ensure that they are always within the specified voltage and current ranges. The device is highly efficient and uses low quiescent current, making it suitable for energy-saving, low-power applications. In summary, the FAN5330SX is a PMIC that integrates advanced features such as dynamic voltage control, end port protection, and low start-up voltage. It is suitable for a wide range of applications, including decorative lighting, camera flash, automotive headlamps, and illuminated signs. It can be used to control up to two strings of LEDs and has advanced features such as proprietary end port protection, dynamic voltage control, and low start-up voltage for extended battery life and improved performance.

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