MPQ2456GJ-Z

MPQ2456GJ-Z

MPQ2456GJ-Z is a DC-DC switch regulator belonging to the family of pulse-width modulated (PWM) voltage regulators. These integrated circuits regulate an input voltage with reference to an internal reference voltage and control an external power switch. The IC operates with input voltage applied between the output terminal and the regulator ground pin. The internal switch is coupled to the ground terminal on the output side. The regulator can accept both AC and DC inputs. The range of input voltage is from 2.7V to 5.5V. The output voltage is available at the output terminal, while the feedback voltage is measured at the FB terminal.

Application Field

The MPQ2456GJ-Z regulator is designed for use in low voltage power supply applications. It can be used for powering low voltage, low power digital and analog circuits. Typical applications include portable or hand-held devices, wireless communication systems, battery-powered applications, temperature and humidity sensors, and digital control systems.

Working Principle

The MPQ2456GJ-Z is a pulse-width modulated 1A switch regulator that operates by controlling the output voltage through the control of the on and off cycle of the switch. The control loop includes an internal oscillator that operates with a frequency of about 500kHz. The oscillator frequency is adjustable through the use of an external resistor, allowing fine tuning of the output voltage. The output voltage of the regulator is sense by a voltage divider and compared with the internal reference voltage. The output voltage is determined by the on-off cycle of the internal switch. As the output voltage increases, the switch closes for a longer time during each cycle, thus regulating the output voltage. When the output voltage reaches the set point, the switch cycles for less time, thus reducing the power supplied to the output.

Conclusion

The MPQ2456GJ-Z is a pulse-width modulated DC-DC switch regulator that offers high efficiency, tight regulation, low noise, and a wide input voltage range, making it ideal for low voltage power supply applications. The regulator can be used with both AC and DC inputs, and it offers adjustable output voltages through the use of an external resistor. It is a reliable, efficient and cost effective solution for powering low powered applications.