AS3693B-ZQFT

Voltage - Output:	0.4 V ~ 50 V
Supplier Device Package:	64-QFN (9x9)
Package / Case:	64-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	--
Applications:	Backlight
Dimming:	I²C, SPI
Frequency:	--
Current - Output / Channel:	--
Series:	--
Voltage - Supply (Max):	--
Voltage - Supply (Min):	--
Number of Outputs:	16
Internal Switch(s):	No
Topology:	--
Type:	Linear
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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，：AS3693B-ZQFT Application Field and Working Principle

The AS3693B-ZQFT is a high-efficiency, low- voltage LED driver PMIC. It provides a pretty good performance for boosting purpose applications in amusement, architecture, and light industries. This great value chip has a massive number of features that makes it highly appealing to ME and LED driver applications. Its mechanism brings one-cycle control, improved LED dimming, and improved power efficiency. Applications Of AS3693B-ZQFT LED Driver PMIC

The AS3693B-ZQFT LED driver PMIC is broadly applied in various domains such as indoor illumination and decoration, advertising lamps, display lighting, gaming machines and amusement machines and architectural lighting. It is also used in other applications like energy-saving lamps, automotive lighting, control gear and solar powered lamps. The AS3693B-ZQFT LED driver PMIC features output current range up to 4.0A and the adjustable switching frequency up to 350kHz, which makes it unique and suitable for various applications. The Internal Structure Of The AS3693B-ZQFT LED Driver PMIC

The AS3693B-ZQFT LED driver PMIC integrates a synchronous buck boost converter with a constant frequency current mode control. This internal structure allows it to offer enhanced efficiency, better thermal performance and cost effective design. The components included in the PMIC are a logic circuit, UC1820 control PWM driver IC, UC180208 current regulator chip, NCP5500 boost converter, charging switch and discharge switch etc. Working Principle of AS3693B-ZQFT LED Driver PMIC

The guideline of the AS3693B-ZQFT LED driver PMIC is based on constant frequency PWM control. It is able to adjust the output current with different light levels and also at different input voltages. Basically, this chip works by analyzing the feedback signal to adjust the output current range. When the input voltage is between 4V and 35V, the PMIC can deliver 4A of output current. The LED driver PMIC has an adjustable frequency up to 350kHz aiming to offer reduced EMI, less switching noise and better LED light performance. Moreover, it has excellent multi-pulse dimming control and adjustable constant current. Conclusion

The AS3693B-ZQFT LED driver PMIC is a cost-efficient, efficient and reliable PMIC for powering LED applications. It integrates a synchronous buck-boost converter with constant frequency current mode control and is suitable for diverse applications like indoor illumination, displays, gaming machines and solar powered lamps. It is equipped with adjustable frequency up to 350kHz to reduce EMI and switching noise, and also has excellent multi-pulse dimming control. Finally, its ability to offer 4A of current output and between 4V to 35V of input voltage makes it truly unique and extremely valuable.

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