AS3685A-ZWLT-2Y80

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The AS3685A-ZWLT-2Y80 drivers are part of the AS3685 integrated circuit family, which provides power management in a versatile and cost-effective way for LED applications. They are mainly used in LED backlighting, medium-high power LED and SMPS applications. This integrated circuit is specifically designed for all types of LED applications, such as LCD TVs, mobile phones, digital cameras, PCs and other medium to high power LED applications.

For LED backlighting applications, the AS3685A-ZWLT-2Y80 drivers provide a wider voltage range, high power efficiency and a fast response. With a single switch, multiple frequency combinations can be achieved, allowing for a wide range of dimming control. They also provide low EMI and noise, making them ideal for applications that need low noise in their output.

The AS3685A-ZWLT-2Y80 drivers also come with a range of safety features, including internal overcurrent protection, temperature sensing and over voltage protection. They also have an integrated soft start and thermal protection that help protect the device from any sudden power surges or other external hazards. Furthermore, these drivers have an adjustable LED-to-LED current ceiling threshold and a VLED detection circuit to ensure greater stability.

The AS3685A-ZWLT-2Y80 drivers also offer a wide range of functionality for medium-high power LED applications. They support multiple current sinks, PWM dimming, multi-mode phase dimming, electronic off-time control, and constant voltage and current control. This comprehensive suite of features makes the AS3685A-ZWLT-2Y80 drivers perfect for LED applications where precise control of LED brightness is critical.

For SMPS applications, the AS3685A-ZWLT-2Y80 drivers provide an ultra-low standby current, along with up to 20A output current and up to 60V output voltage. The drivers also offer a wide range of functionality including fast transient response, soft start, and low-drop-out voltage. Additionally, they have a wide temperature range, making them suitable for any environment.

The AS3685A-ZWLT-2Y80 drivers are designed with efficiency in mind, offering up to 94% efficiency at higher power levels. They also come with built-in ESD protection and current control circuits that help protect the circuit against external hazards. Furthermore, they are designed with a slew rate of up to 1.2MHz, allowing them to respond quickly to different load conditions.

The working principle of the AS3685A-ZWLT-2Y80 drivers is based on a linear or non-linear current control regulation approach. The current control regulation is used for controlling the output current to ensure optimal performance and ensure that the device does not exceed its maximum allowable current limit. This regulation is accomplished by comparing the specified current thresholds (VLED and ILED) of the device with the sensed current level. If the sensed current level exceeds the predefined thresholds, a compensation or correction is made to bring the current levels back to a safe operating level.

The AS3685A-ZWLT-2Y80 drivers are ideal for LED applications, providing a versatile and cost-effective solution. With features such as adjustable LED-to-LED current ceiling threshold, temperature sensing, over voltage protection, PWM dimming and soft start, these drivers are well-suited to LED lighting and other medium-high power LED applications. Additionally, these devices are highly efficient, offer an ultra-low standby current, and are designed with current control and ESD protection to withstand external threats.

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