MAX5022EUT-T

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The MAX5022EUT-T is a single-channel step-down switch controller and an integrated gate driver. It has a built-in low-noise, high-efficiency synchronous voltage regulator for efficiently and accurately controlling the output voltage of a DC-DC converter, making it a solid choice for battery charger and other low power applications.

This device has an adjustable output voltage range of 0.6V to 5.5V and is suitable for an output current up to 500mA. It features a high-quality PWM-to-analog converter that can be adjusted to optimize switching speed and ripple current. The device can operate over a temperature range of −40°C to +85°C and is ideal for space-constrained systems.

The MAX5022EUT-T has multiple protection features, including output over voltage protection, output under voltage protection, and output over current protection. Additionally, the device features an adjustable soft-start function, which enables the startup sequence to be customized to suit the system’s design. The device can also be operated in either voltage-mode control or current-mode control.

The MAX5022EUT-T includes an adjustable oscillator, a voltage feedback system, a power stage section and a logic section. The oscillator generates the switching frequency of the power stage, which is adjustable in the range of 0.3 kHz to 500kHz. The voltage feedback system uses the output voltage signal to adjust the reference voltage, which is then compared to the oscillator signal to decide whether to switch the output voltage.

The power stage includes a high-side power MOSFET, a low-side power MOSFET and a gate driver. The gate driver has an integrated voltage pre-driver that can drive an optically coupled gate driver with a high pulse current and a low off-state resistance. The low-side MOSFET is turned on when the oscillator signal is high and the pre-driver signal is low, resulting in the output voltage being loaded, while the high-side MOSFET is turned on when the oscillator signal is low and the pre-driver signal is high, resulting in the output voltage being unloaded.

The logic section of the MAX5022EUT-T provides the necessary signals to control the output voltage and current. This includes an enable signal and a latch signal, which can be used to turn the device on and off, respectively. The enable signal will engage the device, while the latch signal will set the output voltage. Additionally, a soft-start signal is provided, which can be adjusted to customize the startup sequence. The device also includes a voltage error amplifier to compare the feedback voltage to the reference voltage.

The MAX5022EUT-T is ideal for low power applications such as portable chargers, computing systems, set-top boxes, automotive electronics, and commercial/industrial systems. It is designed for applications where high power efficiency, low EMI, and small size are necessary. The device supports a wide input voltage range, making it ideal for 3.3V, 5V, 12V, and 24V applications. Its integrated soft-start feature and adjustable PWM frequency makes the MAX5022EUT-T an ideal choice for any system design.

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