MIC2184BQS-TR

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The MIC2184BQS-TR is a Non-Isolated Direct FET Driver DC to DC Switching Controller that belongs to the PMIC - Voltage Regulators - DC DC Switching Controllers family. It has been designed to provide a high degree of integration, versatility, and exceptional current capability when used in a modern DC to DC switching regulator.

The MIC2184BQS-TR directly drives two N-channel external MOSFETs, which provide the load regulation function. It uses an internal charge pump to generate a gate drive voltage of up to 15V. This enables a much simpler and more cost-effective design than other open-loop controller solutions since most other solutions use an isolated DC-DC converter to provide the gate drive.

The MIC2184BQS-TR provides an accurate, adjustable current limit for both P-Channel and N-Channel FETs by monitoring the voltage drop across the external current sense resistor. This dynamic current limit is controlled by the Duty Cycle (D) Pin voltage, which can be adjusted from 0V to 1.8V with a typical voltage resolution of 12mV/A. The current limit is further protected with an external current limit and a built-in current limit.

The MIC2184BQS-TR includes a wide range of features, such as an externally adjustable soft start, which limits the in-rush current at power up, an Under Voltage Lock Out (UVLO), which stops the controller when the input voltage falls below an adjustable level, and a Thermal Shutdown Circuit which protects the device from excessive operating temperatures.

The MIC2184BQS-TR also includes a unique “speculative” feature which allows the current limit to be temporarily increased above its nominal setting, during low output current situations, thus increasing the efficiency of the regulator. This features adds additional system protection by avoiding false triggering due to ringing oscillations on the current limit set-point.

The MIC2184BQS-TR is designed to be used in a wide range of applications, from computer servers, to industrial equipment, and consumer electronics. It is capable of handling up to 6A of continuous output current, making it perfectly suited for applications such as DC to DC converters and LED lighting.

In summary, the MIC2184BQS-TR is a versatile, high-performance direct FET driver controller suitable for a wide range of applications. Its features, such as dynamic current limit, soft-start, and speculative current limit make it an ideal choice for power management and energy efficiency.

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