MIC2174C-1YMM-TR

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The MIC2174C-1YMM-TR is a member of an advanced family of high-performance, low-noise pulse-width modulation (PWM) controllers designed to regulate the output voltage of a DC/DC switching converter regulated by a voltage-mode control scheme. This family of devices is designed for applications requiring low-noise, efficient, and reliable regulation of output voltage. The MIC2174C-1YMM-TR can be used in a wide variety of DC/DC switching regulator circuits where the output voltage is regulated by a voltage-mode control scheme.

DC/DC switching regulators are built upon a basic building block consisting of a high-performance voltage comparator, a PWM controller, an external switch, and an output filter. The PWM controller takes input from the voltage regulator and then generates a signal to the external switch to turn the switch on and off in a predetermined pattern. This signal is generally referred to as the PWM signal, and is the signal used to modulate the switch on and off. The PWM signal typically controls the on and off times for the switch, and therefore controls the amount of current flowing through the switch and ultimately the output filter. As the input voltage changes, the PWM controller adjusts the duty cycle and frequency of the PWM signal, as well as the voltage drop across the switch, in order to maintain the desired output voltage.

The MIC2174C-1YMM-TR is a voltage mode controlled PWM switching regulator that uses a true voltage error amplifier. The voltage error amplifier compares the feedback voltage (output voltage) to an internal reference voltage, and produces a current proportional to the difference in voltage. This current is then applied to the internal PWM loop and adjusts the duty cycle of the output switching waveform in order to maintain the desired output voltage. The MIC2174C-1YMM-TR also provides an adjustable soft-start, adjustable UVLO (Under Voltage Lock Out), and adjustable OVLO (Over Voltage Lock Out).

The MIC2174C-1YMM-TR offers excellent thermal stability, minimal current consumption, and minimal size for applications requiring low noise, efficient, and reliable regulation of output voltage. The MIC2174C-1YMM-TR is designed for use in DC/DC switching regulator circuits which require low noise, efficient power conversion, and excellent output voltage accuracy. Typical applications include notebook computer power supplies, LCD and LED displays, CPU core voltage regulation, and USB power regulation.

The typical operating frequency of the MIC2174C-1YMM-TR is adjustable up to 1 MHz (1 MHz), and the duty cycle can be adjusted over a range of 0% to 99%. The device provides excellent transient response and overshoot suppression, making it well suited for use in applications requiring precise output voltage accuracy. The MIC2174C-1YMM-TR also offers a low crossover current, fast rise time, and low propagation delay. The device is rated for operation over the extended temperature range of -40°C to +125°C.

In summary, the MIC2174C-1YMM-TR is a versatile, high-performance DC/DC switch voltage regulator controller designed for use in a wide variety of DC/DC switching converter circuits. It offers excellent thermal stability, low noise, efficient power conversion, adjustable soft-start, adjustable UVLO and OVLO, adjustable operating frequency up to 1 MHz, low crossover current, fast rise time, and low propagation delay. This device is ideal for applications requiring low noise, efficient, and reliable voltage regulation.

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