MP161AGS-5

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Power management integrated circuits (PMIC) are circuits comprised of multiple components that simplify the task of managing power in an electronics system design. Voltage regulators, a key component of PMICS, regulate the amount of voltage applied to certain parts of the system, ensuring that the amount of power supplied to these components remains within the predetermined range. Special purpose voltage regulators offer unique features not seen in other types of voltage regulators, making them suitable in applications requiring special power management characteristics.

The MP161AGS-5 is a type of special purpose voltage regulator available in a TSSOP-14 surface mount package. It is designed to regulate the voltage applied to the loads in applications using multiple Li-Ion cell batteries, such as notebook PCs, portable medical equipment and automotive audio systems. The maximum output current of the device is 5A, and it has a 3-bit digitally programmable voltage output range from 0.9V to 6.5V.

The working principle of the MP161AGS-5 voltage regulator greatly enhances its application potential. Based on a unique combination of a Linear Regulator, Switching Regulator and high accuracy current sense amplifier, the MP161AGS-5 provides extensive protection features and ultra-low dropout voltage. The voltage regulator features three integrated switches and a built-in gate driver chip in order to reduce power losses.

One of the unique integrated features of the MP161AGS-5 is its built-in Thermal-Logic temperature protection. This feature monitors the die temperature of the device and shuts off when the temperature exceeds the temperature limit pre-set by the user. The device also features an under-voltage protection that blocks output if the input voltage drops to a predetermined level below the regulated output voltage.

The MP161AGS-5 also contains an external clock divider, allowing for various fixed frequency clock sources ranging from 3MHz to 200KHz to be used. This feature allows the user to adjust the PORM divider frequency in the range of 3MHz to 200KHz, providing system designers flexibility to optimize the entire system using a wide range of clocking frequencies.

The MP161AGS-5 voltage regulator also features an adjustable slew rate of the output voltage, allowing designers to optimize system power dissipation when the load current is significantly varying in time. The slew rate is adjustable over the range of 0.5mV/ms to 50mV/ms, making it suitable for high efficiency applications.

In addition, the MP161AGS-5 voltage regulator provides an over-voltage protection feature that disables the regulator before the output voltage increases more than 6.8V. This feature prevents supply over-voltage conditions, protecting the connected devices from potential damage.

The MP161AGS-5 voltage regulator can be used in a wide variety of applications that require reliable, accurate and efficient power supply management. It is particularly suitable for powering Li-Ion cell battery powered applications that require enhanced protection and low dropout voltage, such as notebook PCs and medical equipment. The device also provides a smooth output voltage transient response, making it suitable for automotive audio systems requiring dynamic power control.

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