ASL1001RTKJ

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Introduction to ASL1001RTKJ

ASL1001RTKJ is a highly integrated switching power supply for LED lighting applications. It is developed by Alpha and Omega Semiconductor, Inc. and comes in a compact small package. The ASL1001RTKJ enables designers to reduce development time, cost, and board space for small to medium size LED lighting applications.

Application Field

The ASL1001RTKJ is a PMIC – LED driver for light engineering applications, such as street lighting, commercial lighting, horticulture, aquarium and auto maintenance. The PMIC – LED driver provides DC/DC conversion capability and is suitable for single-channel and multi-channel LED lighting designs. The ASL1001RTKJ supports up to 16 LEDs in series, making it the ideal solution for applications where high power and high data integrity is needed.

Working Principle

The ASL1001RTKJ works as a pulse-width-modulation (PWM) converter that allows LED lighting systems to be dimmed and regulated. The PMIC – LED driver applies a constant DC voltage to the LED load by switching a large output voltage using pulse-width modulation (PWM) at a chosen frequency. The frequency of the PWM signal can be adjusted between 400 kHz and 2 MHz and the output current can be adjusted from a minimum of 500 mA to a maximum of 2.5 A. The PMIC – LED driver features an internal temperature sensor for better thermal monitoring, which helps ensure a longer lifetime of the LED lighting system.

The ASL1001RTKJ also features an optional LED feedback pin. This LED feedback pin monitors the voltages across each LED series string and sends feedback information to the LED controller so it can adjust the output current accordingly. This feedback feature helps protect the LED strings from overloading and helps prolong the lifetime of the LEDs.

In addition, the ASL1001RTKJ incorporates Aspen Single Push Secondary Topology (A-SPST), which reduces the number of components required. A-SPST integrates the common gate stage and control isolated stage of the topology into a single component and is particularly suitable for small to medium size LED lighting designs.

Conclusion

The ASL1001RTKJ is a highly integrated switching power supply for LED lighting applications from Alpha and Omega Semiconductor. It is a PMIC – LED driver suitable for light engineering applications such as street lighting, commercial lighting, horticulture, aquarium and auto maintenance. The ASL1001RTKJ is the ideal solution for applications where high power and high data integrity is required due to its support of up to 16 LEDs in series, pulse-width-modulation (PWM) capabilities and its LED feedback feature. The A-SPST feature reduces the number of components required and is particularly suitable for small to medium size LED lighting designs.

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