MIC2571-1YMM-TR

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The MIC2571-1YMM-TR is a device developed by Microchip to provide robust, adjustable and reliable power supply solutions. This device is designed for low-noise, compact voltage regulation applications such as portable electronics, automotive and industrial applications. The MIC2571-1YMM-TR belongs to the PMIC (Power Management Integrated Circuit) Voltage Regulators family, and a DC-DC Switching Regulator variant specifically.

The MIC2571-1YMM-TR is capable of regulating the output voltage over a range of 0.5V to 15V, with an output current of 2A. It operates with a switching frequency of 500kHz and is optimized for efficiency at higher frequencies. It has an input voltage range of 3.1V to 15V and can be used for single battery, dual battery or multiple input rail applications. The device features configurable non-synchronous rectification, over-voltage protection, current limiting and overtemperature protection.

The MIC2571-1YMM-TR is ideal for space-constrained and power-critical applications due to its very small size of just 4mm x 4mm DFN-8 package. This means it can sit in even the most crowded board designs. On-board logic provides interfaces for either an external control or interlock synchronization via an external clock or other control logic. A variety of packages are available to match the customer’s requirements and environment, including leadless chip carriers, surface mount and through-hole packages.

The MIC2571-1YMM-TR is a switching voltage regulator that consists of an internal power FET (Field-Effect Transistor), current sense and inductor. The FET turns the input voltage into a pulse-width modulated (PWM) signal, which is filtered by the inductor and delivered to the output capacitor. The device features both slope compensation and loop compensation, which are essential for regulating the output voltage in order to avoid oscillation and enable stable self-regulation.

The on-board logic of the MIC2571-1YMM-TR can be configured to operate either as an adjustable and synchronous buck regulator or a synchronous boost regulator. In buck regulator mode, the output voltage can be adjusted by the external resistive divider connected to the FB pin. In boost regulator mode, the external resistor is connected to the PWM pin to adjust the output voltage. When the load current decreases, the device goes into pulsed frequency mode, which allows for further current savings.

The MIC2571-1YMM-TR is an excellent choice for a wide variety of portable, power-sensitive applications. It is capable of delivering up to 2A of output current and is highly efficient, with a quiescent current of only 5µA in standby and 30mV of ripple at the output. It features on-board protection features such as over-voltage, over-temperature and current limiting, which provide robust operation in harsh and variable conditions. Additionally, the small 4mm x 4mm DFN-8 package size makes this device an excellent choice for space-constrained applications.

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