IFX78M05ABTFATMA1

IFX78M05ABTFATMA1 Application Field and Working Principle

IFX78M05ABTFATMA1 is one of the products of Power Management Integrated Circuits (PMIC) - Voltage Regulators - Linear. It is a single-channel linear voltage regulator and is particularly suitable for the power supply of single board computers (SBCs) such as Raspberry Pis.

IFX78M05ABTFATMA1 is a 5V to 3.3V linear voltage regulator which is fully compliant with the industry standard PMIC architecture. It has a wide operating voltage range from 4.5V to 16V and can supply up to 1A of output current. It has a current limit of 1.5A and a thermal shutdown temperature of 170°C. The input voltage will rise close to the output voltage when it is at its maximum current output. It also has a low quiescent current of typically 120 µA. Furthermore, the device has built-in protection features such as reverse battery protection, over-voltage protection, under-voltage protection and short-circuit protection.

The working principle of IFX78M05ABTFATMA1 is based on the Buck Rectifier circuit, which is a type of voltage regulator circuitry and is used for providing a steady output voltage over a wide input supply range. When the input voltage rises, a transistor is triggered and current is diverted through it into the regulator. The current passes through an inductor which stores the energy and then flows through the output capacitor to the load. The voltage regulator then controls the output voltage by regulating the current flowing through the inductor by switching off the transistor at the desired voltage level. The output voltage is maintained at a constant level by the feedback loop which senses the output voltage and adjusts the current accordingly. By switching off the transistor intermittently, the output voltage is limited, thus preventing over-voltage.

IFX78M05ABTFATMA1 provides built-in output protection features, allowing the system to operate safely within its suggested design parameters under normal operation. Its low quiescent current and wide operating voltage range makes it ideal for a variety of applications such as motor control, battery charger and backlighting even in extreme conditions.