AS3492-ZWLM Integrated Circuits (ICs)

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AS3492-ZWLM is an ultra-low power, single-stage, boost-type, constant current LED driver used for low power applications. It is a high-efficiency solution for driving LEDs from an AC/DC source or battery. It has an integrated over temperature, over current, open loop, and short circuit protection. It is available in two different output current ratings and two different input voltages.

The AS3492-ZWLM is ideal for applications where low power is the main concern. It is suitable for applications such as consumer electronics, automotive and industrial lighting, smart power devices, and power converters. It is also capable of providing adjustable constant current output and is capable of dimming/fading/PWM control of the LED brightness. The AS3492 operates with no additional external components, reduces component count and board space, and increases design flexibility.

The working principle of the AS3492 is simple. It is a single stage, boost-type, constant current LED driver. Its input voltage can range from 5.5V up to 12V, and it is designed to drive a single LED up to 150mA from this input voltage. The output current is determined by a resistor connected to the CTRL pin. The AS3492 will maintain the LED current within 5% of this predetermined level. The device is also protected from over temperature, over current, open loop, and short circuit conditions.

The AS3492 has many advantages. The integrated boost stage for LED driving is configured with a single stage synchronous rectification topology that allows for reduced heat and improved power efficiency. The output current can be easily adjusted, and the device is available in two different wattage options. It has integrated feedback circuitry, and its integrated over temperature, over current, open loop, and short circuit protection ensure that the device is safely operated. The device is also RoHS compliant, and its footprint is a fraction of the size of other similar devices.

In summary, the AS3492-ZWLM is an ideal solution for low power applications that require constant current LED driving. It is a single-stage, boost-type, constant current LED driver that can drive a single LED up to 150mA. It is available in two different output current ratings and two different input voltages. It has an integrated over temperature, over current, open loop, and short circuit protection. It is integrated with an efficient synchronous rectification topology and has an adjustable output current that can be set with an external resistor. This makes the AS3492 an efficient and reliable LED driver.

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