LM1572MTCX-5.0/NOPB

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Introduction to LM1572MTCX-5.0/NOPB

The LM1572MTCX-5.0/NOPB is a voltage regulator chip designed by Texas Instruments and produced in a 6-pin TSOP-II package. This adjustable power supply regulator provides fast transient response and high frequency operation for use in AC/DC adapters, telecommunications, mobile battery packs, general-purpose power supplies, and other DC-DC applications.

Application Field of LM1572MTCX-5.0/NOPB

The LM1572MTCX-5.0/NOPB is a versatile regulator that can be used in a wide range of applications. Its higher current carrying capacity and low voltage drop make it ideal for AC/DC adapters and other regulated power supplies. Further, its fast response time makes it suitable for use in telecommunications and mobile battery packs. Finally, its ability to support wide input voltage range and programmable output voltage make it suitable for different types of applications.

The LM1572MTCX-5.0/NOPB has typical applications in USB, LANs, GPS, Wi-Fi and other data transfer, base station power systems, Solid State Lighting and Automotive. The individual output current can be se with a resistor divider on the EN/UVLO pin. An additional EN/UVLO pin provides an enable/disable option from an external signal.

Working Principle of LM1572MTCX-5.0/NOPB

The LM1572MTCX-5.0/NOPB is a DC/DC switching regulator component, providing voltage regulation and current limiting for positive output voltages of 5V, 6V, and 12V as well as negative output voltages of -5V, -6V and -12V. It works on the principle of synchronous rectification. On the input side, the rectified AC current is filtered and the pulsed DC is then supplied to the switch. The switch is controlled by a voltage ramp and an on-time or fixed frequency. This drives the resonant LC filter circuit, which provides a smooth output voltage and frequency.

The LM1572MTCX-5.0/NOPB has an internal start assist circuit and requires minimum external components. An enable input is provided for later versions which supports a “Auto Restart” feature, making it suitable for low power applications. The component is designed to operate in a wide range of temperature(-40°C to +85°C) and voltage (2.7V-18V) to conform the automotive and aerospace standards.

Conclusion

The LM1572MTCX-5.0/NOPB is a versatile, low power consumption voltage regulator from Texas Instruments. It provides fast transient response and programmable output voltage, making it suitable for a variety of applications – from AC/DC adapters and mobile battery packs to base station power systems and general-purpose power supplies. The LM1572MTCX-5.0/NOPB operates on the principle of synchronous rectification and requires only minimum external components. It has wide temperature and voltage capability, making it suitable for automotive and aerospace applications.

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