AP5724FDCG-7

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AP5724FDCG-7 is a high-frequency synchronous buck regulator used in various power management and LED driving applications in the lighting system. It adopts a high-efficiency synchronous buck converter with a 3V to 18V input voltage range to provide a 4V to 17V adjustable output voltage and up to 4A output current capability. The AP5724FDCG-7\'s fast transient response, adjustable switching frequency (500kHz to 2.2MHz), low 6mV voltage ripple, low quiescent current and light load current, and variety of features make it ideal for LED applications.

AP5724FDCG-7 is an ideal power management integrated circuit (PMIC) for LED driving applications. The AP5724FDCG-7 has an integrated low RDS(on) switching MOSFET, the output voltage can be adjusted through an external resistor and the frequency of the switching PWM signal can also be adjusted by an external resistor. It also supports over-temperature and over-current protection and soft-start protections. All these features make the AP5724FDCG-7 an ideal solution for low power LED driving applications.

The AP5724FDCG-7 is a 600V rated, high-efficiency synchronous buck PWM power regulator designed to provide a high 5A output current with a low 6mV voltage ripple at full load. It utilizes a low RDS(on) internal MOSFET with 182mΩ typical RDS(on) at 4V for a high efficiency and low ripple voltage, enabling the AP5724FDCG-7 to deliver up to 90% of efficiency. The AP5724FDCG-7 has a wide operating voltage range from 3V to 18V and a variable frequency from 500kHz to 2.2MHz. This allows for flexible operation in many LED driven applications.

The AP5724FDCG-7 has a control loop with a high level of stability (±1.2%). It also has an adjustable soft-start feature that ensures a smooth transition during power on. The AP5724FDCG-7 also has built-in short-circuit protection to protect the system when the output voltage is short-circuited. The AP5724FDCG-7 has an adjustable operating temperature range from -40°C to +125°C, allowing the part to operate in a wide array of ambient temperatures.

The AP5724FDCG-7 also provides over-voltage, over-current protection and thermal shutdown. The AP5724FDCG-7 has an integrated 85μA under-voltage lockout which is disabled for 3V operation. It also has an integrated 470μA current sense amplifier for over-current monitoring, and a 0.05X10V output voltage monitor with a wide output voltage window.

The AP5724FDCG-7 also offers an adjustable frequency for low EMI/RFI and flexibility when operating in restrictive environments. The switching frequency of the AP5724FDCG-7 can be adjusted from 500kHz to 2.2Mhz via an external resistor. This adjustable frequency allows the designer flexibility to match the pulse width of the LED and the output voltage, while allowing the designer to keep EMI and conducted noise levels very low.

With its high efficiency, wide operating temperature range, integrated protections and adjustable frequency, the AP5724FDCG-7 is an ideal PMIC for LED driving applications. It is mainly used in outdoor, automotive and industrial lighting applications, but can also be used in consumer and indoor lighting applications, where efficiency, power density, cost and compliance to EMC requirements are very important.

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