FAN7535MX Integrated Circuits (ICs)

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PMIC or Power Management Integrated Circuits typically refer to any controller capable of regulating, controlling and modulating power input, voltage/current parameters, and/or digital sequencing. The FAN7535MX, a single-channel, step-down switchmode DC-DC controller manufactured by ON Semiconductor, is among the most commonly used in these applications.

The FAN7535MX is a versatile medium current, high efficiency DC converter with features such as overvoltage protection and short-circuit protection. Its primary application is in lighting and ballast controllers for applications such as LED drivers, industrial controls, and home or office lighting.

The FAN7535MX is a low-power, low-noise, step-down DC-DC controller with a high-efficiency current mode control. This DC-DC controller enables switching frequencies up to 500kHz, depending on the inductor size, which makes it suitable for applications that need fast transient response. The device can also be tailored for applications that require energy-saving, low-noise performance through the use of its flexible Pulse Width Modulation (PWM) dimming control.

The FAN7535MX features integrated, soft start and overvoltage protection with OVP of 17V, which provides reliable system protection in case of supply voltage transients. An on-off control pin has been added to enhance the fault protection feature. In addition, the device features low quiescent current, adjustable output voltage ramps and UL-recognized safety isolation.

The FAN7535MX controller operates with an internal current-mode feedback loop to regulate the output voltages. The chip has two distinct operating modes, namely voltage mode (VM) and current mode (CM). If a current-sensing loop is included in the system design, the controller can be operated in the current mode to maximize efficiency by changing the switching frequency based on the load current.

The FAN7535MX can be used in a wide variety of applications in lighting and ballast controllers. It can be used for lighting applications such as LED dimmers, dimmers for halogen and fluorescent lighting, stage lighting, and surge protection. In ballast control applications, the FAN7535MX can be used for switching power supply converters, single-phase drivers and power converters.

The FAN7535MX is a highly efficient, cost-effective and reliable solution for medium-current applications requiring precise control over the output voltage. Its features such as adjustable switching frequency, low quiescent current, overvoltage protection, and wide operating temperature range, make it an ideal choice for applications that need a robust and efficient solution.

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