IH4824D

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DC DC Converters

The IH4824D is a type of DC DC converter, primarily used in a range of applications including industrial, military, telecom, automotive, medical, and consumer electronics. It is a single-output, step-down DC to DC converter with high efficiency, low quiescent current, and wide input voltage range.

Design

The IH4824D features an optimized design to ensure optimum performance. It is a fully integrated solution that includes a buck regulator, internal power transistor, power sense, feedback control, and protection circuitry. The design also includes thermal protection, undervoltage lockout, and short-circuit protection to maximize safety and reliability.

Features and Benefits

The IH4824D provides a range of features and benefits that make it a reliable and efficient solution for various applications. It offers high efficiency of up to 95%, with a wide 3:1 input voltage range and up to 800mA of output current. The IH4824D is also capable of regulating a nominal 1.2V, 1.8V, 2.5V, 3.3V, 5V, and 12V output voltage. The converter is equipped with thermal protection and external shutdown capabilities, which can be used to reduce power consumption during standby mode.

Applications

The IH4824D is designed for a range of applications such as industrial, automotive, medical, and consumer electronics. It is primarily used for low power point-of-load (POL) applications and 5V and 12V system powering and voltage regulation. In addition, it can also be used for battery management, variable speed motor control, power supplies, and motor speed control.

Working Principle

The IH4824D utilizes a buck-boost converter topology to step down the input voltage to the required output voltage. The DC DC converter works by switching the high-frequency pulse width modulation (PWM) signal, which determines the output voltage of the converter. This PWM signal is generated by the on-chip control loop, which monitors and adjusts the output voltage according to the feedback signal from the output voltage sensing circuit.

The IH4824D then operates in a constant current mode, regulating the output current to ensure constant output voltage levels. The output voltage is regulated by the on-chip control loop, which monitors the output voltage and adjusts the duty cycle of the PWM signal accordingly. In addition to the constant current mode, the IH4824D also offers a low-dropout (LDO) mode that reduces the output voltage when it is below a certain level.

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