MIC5200-3.3BS

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MIC5200-3.3BS application field and working principle

Introduction:The MIC5200-3.3BS is a cost-effective Linear Voltage Regulator (LVR) suitable for applications requiring both low quiescent current and low dropout performance. The device is capable of delivering a single output voltage of 3.3V, with an input voltage range of up to 5.5V. The MIC5200-3.3BS offers best-in-class performance for low-noise and low-ripple applications and is suitable for driving low-power devices such as digital-potentiometers (DP), microcontrollers and flash memory.

Application Field

The MIC5200-3.3BS is suitable for applications where low noise, low ripple, and low dropout performance are important. It is useful in a variety of applications including load switching and driving low-power devices such as microcontrollers and flash memory. It is well suited for powering logic, memory and interface circuits, in portable applications.

The device can be used as an enable/disable switch and as a voltage supervisor in battery-powered systems, or to supply bias or bulk voltage. The MIC5200-3.3BS is designed to operate over a wide temperature range and is tolerant to transient surge load currents up to 15A. Additionally, the low quiescent current of the device makes it suitable for applications such as remote sensors, video cameras, and other battery-powered applications that require low-power consumption.

Working Principle

The MIC5200-3.3BS is a decentered PNP-type translinear controlled LVR. Its low-noise, ripple-free and precision regulated output voltage is determined by zener-stabilized voltage dividers (R1 and R3) at the output terminal. All devices feature an enable/disable pin, which allows for applications requiring an enable/disable capability. When disabled, the device draws extremely low quiescent current (20nA).

The MIC5200-3.3BS also features a very accurate trim resistor (R2) that sets the output voltage within +/-3%. The output voltage can be set to a voltage within the absolute maximum rating (VOUTmax) by adjusting the trim resistor, R2. The output voltage is trimmed to a specified level, enabling the device to maintain a precision-regulated output voltage over the full operating temperature range with a low-drift operation and low-noise performance. Internally, there is a low-noise operational amplifier (op-amp) for driving a series output FET, which eliminates any overshoot or undershoot. Additionally, a rise and fall time as low as 10µs is achievable. The MIC5200-3.3BS also has a wide input-voltage range and can tolerate transient surge load currents up to 10A.

Conclusion

The MIC5200-3.3BS is a low-noise, low-ripple and low-dropout linear voltage regulator suitable for driving low-power devices. It can be used as an enable/disable switch, a voltage supervisor in battery-powered systems and to supply bias or bulk voltage. The device features an enable/disable pin, which allows for applications requiring an enable/disable capability. The accurate trim resistor allows for output voltage adjustment within its maximum rating. The excellent transient response and wide input-voltage range make the MIC5200-3.3BS an ideal solution for a variety of applications.

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