SP6686ER-L/TR

Voltage - Output:	--
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	Backlight, Camera Flash
Dimming:	--
Frequency:	2.4MHz
Current - Output / Channel:	400mA (Flash)
Series:	--
Voltage - Supply (Max):	5.5V
Voltage - Supply (Min):	2.7V
Number of Outputs:	1
Internal Switch(s):	Yes
Topology:	Switched Capacitor (Charge Pump)
Type:	DC DC Regulator
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The Application Field and Working Principle of SP6686ER-L/TR

The SP6686ER-L/TR is a PMIC (power management integrated circuit) designed and manufactured by Intersil for driving LEDs (light-emitting diodes). The device includes a built-in voltage drop-down resistor that creates a constant current interface for resistive or constant voltage LED applications, offering a very simple solution to constant current LED driving applications with low thermal and manufacturing costs.

Features and Benefits of SP6686ER-L/TR

The SP6686ER-L/TR device is a monolithic IC with a single channel LED driver, which helps in the implementation of LED chains with high efficiency, low power loss and high LED brightness. It provides comprehensive protection features, including foldback over-current protection, over-temperature protection, under-voltage protection, over-voltage protection, short-circuit protection, open-circuit protection and over-current protection. Furthermore, it supports pulse width modulation (PWM) interface, giving great flexibility to the user in controlling LED brightness.

SP6686ER-L/TR Application Fields

The SP6686ER-L/TR IC is particularly suited for LED applications, where it delivers high efficiency, LED brightness and low power loss. It offers a wide range of applications, such as automotive interior and exterior lighting, decorative and street lighting, industrial lighting, and numerous other applications with LED lighting.

Working Principle of SP6686ER-L/TR

The SP6686ER-L/TR works on the principle of constant current control, providing an accurate and stable current source for driving the LED chain. It consists of an active current control circuit that can produce a precise current reference and programmed IOUT. To ensure precise control, an integrated regulating voltage is used to provide an accurate voltage reference. An internal resistor sets up the output current and a PWM input allows a wide range of brightness settings to accommodate brightness requirements. With the PWM input, the measured current is reduced to a fraction of the programmed current, depending on the voltage of the PWM signal. As the PWM signals vary, the VREF will be reduced, resulting in a reduction of the IOUT, which provides variable LED brightness.

Summary

The SP6686ER-L/TR is a PMIC (power management integrated circuit) designed and manufactured by Intersil for driving LEDs (light-emitting diodes). It incorporates a built-in voltage drop-down resistor that creates a constant current interface for both resistive and constant voltage LED applications, minimizing thermal and manufacturing costs. The main features and benefits of the SP6686ER-L/TR include wide range of applications, efficient operation, short-circuit protection, over-voltage protection, high LED brightness, and PWM control for variable LED brightness. Furthermore, it works on the principle of constant current control and consists of an active current control circuit that produces a precise current reference and programmed IOUT.

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