MC34163PG

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PMIC – Voltage Regulators – DC DC Switching Regulators

The MC34163PG is a low-cost current-mode monolithic pulse width modulation (PWM) regulator with an integrated 100V N-channel MOSFET. It is specifically designed to deliver excellent dynamic performance, while at the same time reducing overall gate drive power requirements. With its small footprint, robust design and low cost, it is a good choice for many applications.

The MC3416PG is well-suited for a variety of applications, including switched mode power supplies, battery management systems, low-voltage DC-to-DC power converters, and LED lighting. The device comes in a variety of package styles such as leaded, leadless, and surface mount.

The main application field of MC34163PG is in low-frequency isolated DC-DC converters for several applications, for example, phase-shift full-bridge converters, phase-shift half-bridge converters, flyback converters, and forward converters. The device can be used as a power supply controller for distributed power systems, video and telecommunications multipoint systems, and other systems with high-output current requirements.

The working principle of MC34163PG is relatively straightforward. The device consists of a high-voltage N-channel MOSFET and a low-voltage current-mode PWM output stage. The MOSFET is triggered on and off according to the PWM output signal. This signal is generated by a voltage-controlled oscillator, which adjusts the PWM signal based on the sensed input voltage. A feedback loop is used to regulate the output voltage. When the input voltage varies, the frequency of the PWM signal is also automatically adjusted, thus maintaining the output voltage constant.

The MC34163PG is designed for operation in switching power supplies up to 100W. It has a minimum junction temperature of 150°C and an operating temperature range of -40°C to +85°C. The device features a wide input voltage range from 5V to 100V, an adjustable switching frequency from 30kHz to 100kHz, and an adjustable current limit from 0.45A to 2.2A. Additionally, it has an enable/disable pin which allows for remote enable/disable operation.

The MC34163PG has a number of advantages. It is highly efficient, with a typical efficiency of up to 90% at full load. It also has a low logic-level off-time capability, allowing it to be used in microprocessor-based systems without the need for additional gate-drive power. It is also very reliable due to its robust design, and its small size allows it to fit into very small circuit designs.

Overall, the MC34163PG is a great choice for many applications, due to its low cost, reliability, and wide input voltage range. It is a good solution for applications that require a low-frequency, isolated DC-DC converter and/or a cost-effective power supply controller. It is also suitable for systems that need to operate over a wide temperature range.

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