MIC4576-3.3BT

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MIC4576-3.3BT is an efficient DC-DC switching regulator that integrates a low on-resistance power switch and operates between input voltages of 4.5 to 28 volts. This device is suitable for a wide range of applications, such as distributed power systems, automotive, industrial, and consumer electronics.

The MIC4576-3.3BT is capable of being driven in either a Step-Down (buck) or Step-Up (boost) configuration. It can provide an output current ranging from 10mA to 1A. It has a low quiescent current of typically 7mA and is capable of operating up to 2.25MHz switching frequency. In addition, it includes a low drop-out regulator to regulate the reference voltage and it features thermal shutdown protection.

Application Field and Working Principle

The MIC4576-3.3BT is an ideal solution for power management applications in a wide range of industries. It provides high efficiency performance in distributed power systems, automotive, industrial, and consumer electronics. It is also suitable for powering cellular phones and portable devices.

The MIC4576-3.3BT is a DC-DC switching regulator that operates on input voltages from 4.5 to 28 volts and provides an output current from 10mA to 1A. It utilizes a low on-resistance power switch to control the output voltage. The regulator works by connecting the input voltage to the high voltage side of the power switch and controlling it with a pulse-width modulation (PWM) signal. By controlling the duty cycle of the PWM signal, the regulator adjusts the output to the desired voltage level.

The MIC4576-3.3BT includes an innovative low dropout voltage regulator that can maintain the integrity of the reference voltage even under transient load conditions. In addition, it features a thermal shutdown protection that automatically shuts down the device if the die temperature exceeds a preset threshold. This ensures the regulator is protected from damage in the event of over-temperature operation.

The MIC4576-3.3BT provides high efficiency performance and long-term reliability for a wide range of applications. It is capable of providing output currents ranging from 10mA to 1A and its low quiescent current of typically 7mA makes it suitable for low power applications. Additionally, its high switching frequency of 2.25MHz maximizes efficiency and enables small-sized inductors and capacitors.

The MIC4576-3.3BT is RoHS compliant and also includes a comprehensive package offering that fits into a wide range of applications. It is available in 8 pin SOIC-8, 8 pin SSOP-8, 8 pin VQFN-8 packages. The device is offered in standard versions for commercial operating temperature range (0°C to 70°C) and automotive operating temperature range (-40°C to 125°C).

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