MC34167D2TR4

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The MC34167D2TR4 is a high-efficiency DC/DC converter buck regulator, designed for low-input voltage point-of-load applications.
The integrated circuits integrate a controller, P-channel and N-channel MOSFETs, as well as a voltage divider for feedback. The buck converter’s internal switching frequency can be programmed with an external resistor. Additionally, the input voltage operating range can be programmed with external components. It is extremely beneficial to optimize the solution size with the integrated buck. The output voltage of this buck converter can be adjusted with an external resistor.
The MC34167D2TR4 is a perfect solution for low-input voltage point-of-load applications. It is used in automotive electronics and lighting, among other applications. It is also used in power supply and voltage regulation, such as power factor corrected SMPS and industrial applications. The MC34167D2TR4 is designed to handle up to 3A continuous current and up to 5A for pulses at the output side. It can cope with wide range of input voltages from 4.5V to 24V.
The working principle involved in the MC34167 DC/DC converter is based on Pulse Width Modulation technique. This technique involves generating and rapidly switching PWM pulses with a microprocessor or a dedicated logic circuit and controlling the output voltage by adjusting the pulse width. When the MC34167 DC/DC converter is in operation, it acts as a buck regulator and the output voltage is regulated by controlling the duty cycle of the PWM signal. This PWM signal is then fed to the Gate of the power MOSFET, which then switches the mosfet on and off according to the input signal.
The MC34167 DC/DC converter is a complete, stand-alone switching solution. In addition to the buck regulator, the IC includes a low on-resistance power MOSFET, a fast over-current protection mechanism and a low RDS(ON) P-FET. The duty-cycle control loop of the MC34167 DC/DC converter is optimized to provide fast transient response, good line and load regulation, and low output voltage ripple. The MC34167 DC/DC converter also provides an adjustable softstart which allows an adjustable rise time of the output voltage.
The MC34167 DC/DC converter is a highly integrated and highly efficient buck regulator. It provides the flexibility to optimize the output regulation for a variety of point-of-load applications while minimizing the power dissipation. It can operate over a wide input voltage range (up to 24V) and over an output voltage range of 0.6V to 5V. The MC34167 DC/DC converter can also provide a current limiting feature with its adjustable current limit.

In conclusion, the MC34167D2TR4 is a highly integrated and flexible DC/DC converter buck regulator. It is used in low-input voltage point-of-load applications and is ideal for automotive, lighting, power supply and voltage regulation, and industrial applications. It is designed to handle up to 3A continuous current and 5A for pulses at the output side, with a wide input voltage range from 4.5V to 24V. The MC34167 DC/DC converter implements PWM technique to regulate the output voltage and provide fast transient response and low output voltage ripple. It is also equipped with adjustable softstart and current limit features, making it a complete, stand-alone and efficient solution for point-of-load applications.

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