AS3820 QFN48 DB

Series:	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Current - Output / Channel:	--
Moisture Sensitivity Level (MSL):	--
Outputs and Type:	16, Non-Isolated
Voltage - Output:	--
Features:	--
Voltage - Input:	4 V ~ 5.5 V
Supplied Contents:	Board(s)
Utilized IC / Part:	AS3820

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AbstractThis paper presents the evaluation board, AS3820 QFN48 DB, which is a LED driver and its application field, working principle and its application. The LED driver uses advanced technology, including pulse-width modulation (PWM) and current-limiters, allowing for a wide range of programmable LED intensity, plus a variable brightness range from 0 to 100%. Introduction Light emitting diodes (LEDs) are becoming increasingly popular in applications such as displays, lighting fixtures and automotive applications due to their superior brightness and efficiency. The AS3820 QFN48 DB evaluation board is a LED driver board providing the necessary voltage to drive LEDs. It can be used to set up a LED testing platform, to simulate different LED conditions including the LED intensity, color temperature and mode selection. The LED driver employs a single-stage DC/DC regulator driver and uses pulse-width modulation (PWM) to provide higher efficiency and a higher brightness. The LED driver utilizes current-sharing techniques and offers adjustable current-limits so that multiple LEDs can be driven safely with an external power supply. Design and ApplicationThe AS3820 QFN48 DB is a high-efficiency, high power LED driver board. Its design combines a high performance regulator driver, under-voltage lockout, current limiting and PWM dimming control to meet the needs of power-sensitive designs that require accurate control and bright illumination. The voltage ripple is low, providing a stable and reliable supply for the LEDs. Furthermore, the design ensures a 0 to 100% brightness range. The AS3820 QFN48 DB evaluation board has been designed for use in automotive applications, electronics displays and lighting fixtures. Working PrincipleThe AS3820 QFN48 DB evaluation board works by supplying a steady and adjustable voltage to the LEDs. A single-stage, high-efficiency DC/DC regulator is employed to provide a constant voltage source to the LEDs. The regulator also supports under-voltage lockout and current limiting to ensure a safe and reliable LED operation. The LED driver further employs PWM dimming control, enabling a brightness range from 0 to 100%. The current sharing technique is also used for driving multiple LEDs safely, with the adjustable current limiter offering increased safety when operating multiple devices from a single power source. ConclusionThe AS3820 QFN48 DB evaluation board is a high-efficiency, high-power LED driver board that offers a wide range of programmable LED intensity, from 0 to 100% brightness. Its design includes advanced technologies, such as pulse-width modulation, current-limiters, under-voltage lockout and current sharing for safe operation. The AS3820 QFN48 DB evaluation board is well-suited to applications such as automotive displays, lighting fixtures, and consumer displays.

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