PQ1CG41H2RZH Datasheet/PDFPQ1CG41H2RZH is a voltage regulator belonging to the family of DC DC switching regulators. It is defined as a point-of-load positive regulator that can operate at up to 6A, because of its integrated low-side MOSFET (metal oxide field effect transistor). As opposed to linear voltage regulators, switching regulators work by turning power components on and off, in order to reduce the input voltage to a level suitable for the output voltage.
By this means, a larger voltage conversion range can be achieved, reaching up to 95%, increasing the overall more efficient energy use. The PQ1CG41H2RZH supports a wide input voltage range between 2.5V and 5.5V and can provide output current in the 0.5A-6A range, while the standby current is set at 16μA.
To minimize the electrical noise associated with the high frequency oscillator, the PQ1CG41H2RZH includes several features such as soft start, over temperature protection and overcurrent/short-circuit protection. It also has a wide tracking voltage range of 1V to 3.3V for adjustable output voltage, which is regulated by using external resistors.
The PQ1CG41H2RZH is usually used in microprocessors, digital equipment, DSP, electrical power sources and DC-DC converters. It is particularly suitable for applications that require a low input voltage and high output current, such as embedded systems, automotive electronics and data communications, just to name a few.
The working principle of the PQ1CG41H2RZH is based on the pulse width modulation (PWM) technique, which regulates the duty cycle of the pulses applied to the transformer control pin. This regulation makes it possible to achieve different output voltages according to the various pulse cycles of the applied current. The internal switching frequency is set to 1.5MHz and the PWM control circuit provides precise output voltage- and current-regulation.
In order to maximize its energy efficiency, the PQ1CG41H2RZH has two synchronous rectification levels and can accurately increase its switching frequency overcurrent. These features work together to reduce the losses in the device when it is operating under lower currents, thus enhancing the overall efficiency of the voltage conversion.
In conclusion, the PQ1CG41H2RZH is a highly capable DC DC switching regulator which offers robust protection, high efficiency and a wide output current range suitable for a variety of applications. It is optimized for operation with input voltages from 2.5V to 5.5V and its output voltage can be set by using external resistors, making it an ideal solution for a wide range of embedded, automotive and data communications solutions.