AS3691A-ZQFT

Voltage - Output:	15V
Supplier Device Package:	24-QFN (4x4)
Package / Case:	24-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-20°C ~ 85°C (TA)
Applications:	Backlight, Lighting
Dimming:	--
Frequency:	--
Current - Output / Channel:	400mA
Series:	--
Voltage - Supply (Max):	--
Voltage - Supply (Min):	--
Number of Outputs:	4
Internal Switch(s):	Yes
Topology:	--
Type:	Linear
Part Status:	Obsolete
Packaging:	Tray

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AS3691A-ZQFT LED Driver

The AS3691A-ZQFT is an LED driver designed to control LEDs used in a variety of applications. This driver is part of the PMIC – LED Drivers family, a type of integrated circuit that often provides both power management functions as well as lighting control functions. The AS3691A-ZQFT driver was designed to enable a wide range of features to optimize the power and performance of LEDs, such as constant current drive, thermal protection, soft start, active dimming, and more.The AS3691A-ZQFT driver is particularly suitable for applications that require a wide range of current handling ability, such as lighting installations, home and office lighting systems, automotive lighting fixtures, and architectural lighting. This device can support up to 700mA of LED current with a single input channel and up to 4.2A of LED current with multiple input channels. The device has a wide input voltage range of 4V-38V, and is compatible with a variety of power sources, including automotive, DC/DC step down converters, AC line supply, and generator set supplies.The AS3691A-ZQFT driver works by using an AC or DC current source to power the LEDs. This current source is connected to the AS3691A-ZQFT’s input transistors, which are then directed to the LED strings. The AS3691A-ZQFT can be programmed to output a constant current or pulse width modulated current, depending on the desired LED performance characteristics.The AS3691A-ZQFT also provides several features that help to optimize LED performance and extend its lifespan. These features include thermal protection to prevent over-heating, over voltage protection for improved system stability, and variable frequency dimming for increased lighting flexibility. Additionally, the AS3691A-ZQFT has built-in diagnostics capabilities that allow it to monitor the LEDs’ current performance and alert the user to any issues.The AS3691A-ZQFT’s wide range of features makes it an ideal choice for many different types of LED lighting applications. It provides an efficient and reliable means for controlling the power and performance of LEDs, making it a great choice for lighting fixtures, automotive lighting systems, and architectural lighting. In addition, the device is designed to easily integrate with existing system architectures, making it an excellent choice for a variety of applications.

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