MAX16992AUBA/V+

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The MAX16992AUBA/V+ DC DC switching controller is a highly integrated solution that is suitable for a wide range of power management applications. The MAX16992AUBA/V+ is capable of distributing power between two load outputs using input voltage sources of either 3.3V, 5V, 12V, or 24V. The device operates in a synchronous rectifier configuration and offers up to 96% efficiency.

The MAX16992AUBA/V+ has a frequency range of 50 kHz to 1.5 MHz and is available in a 8-pin surface mount package. It features a wide range of voltage and current monitoring, fault protection, over-temperature protection, and over-current protection.

The MAX16992AUBA/V+ is ideal for laptop adapters, LCD monitors, digital TVs, set-top boxes, and other high density applications with tight space requirements. Its high efficiency and small size allow it to fit into the smallest spaces. It is also available in several versions: 2×2, 2.5×2, and 4.5×2.

MAX16992AUBA/V+ Application Field:

• Data Storage
• Networking
• Telecom Infrastructure
• Industrial Automation
• Consumer Electronics
• Machine Vision

MAX16992AUBA/V+ Working Principle:

The MAX16992AUBA is designed to be used as a point-of-load switching controller for high-density, low voltage distributed power systems. It integrates an adjustable PWM (pulse-width modulation) controller and a high current, low-dropout linear regulator. The device includes a power MOSFET switch controller, along with full protection features. This device switches at a constant frequency, independently of the input voltage. A variable on-time, off-time control loop, switching at frequencies up to 1.5 MHz, allows for the highest possible efficiency in a wide range of output power requirements.

The output PWM signal can be used to drive an external power MOSFET. A bootstrap diode is required for proper operation of the PWM output stage. If a supply voltage of 3.3V is applied to Vin, an external transistor and bootstrap capacitor is also required. The MAX16992AUBA also contains an auxiliary linear regulator that outputs a constant 5V supply for various applications.

The PWM controller in the MAX16992AUBA uses an internal voltage regulator that sets the feedback voltage level. This reference voltage can be set externally to modify the peak current limit of the PWM. The linear regulator in this device can be used as a pre-regulator for applications requiring additional efficiency. The current limit stage of the linear regulator also provides protection against overcurrent and short-circuit conditions.

The MAX16992AUBA provides over-voltage and over-temperature protection features. The over-temperature protection feature monitors the temperature of the IC and shuts down the PWM switching output when the temperature exceeds its absolute maximum rating. This provides robust protection in high temperature environments.

In summary, the MAX16992AUBA is a highly integrated power management solution that offers superior performance and reliability. With its wide operating range and highly efficient switching controller, the MAX16992AUBA is an ideal choice for applications where space and efficiency are paramount.

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