LM2686MTC/NOPB

The LM2686MTC/NOPB is an efficient, step-down DC-DC switching regulator solution which allows efficient voltage regulation with limited input voltage or current. This device offers small size, large output power and good thermal performance. It also features an integrated feedback loop and voltage supervisor, enabling smooth transition to a preset, regulated output voltage. This application note discusses the working principles and applications of LM2686MTC/NOPB.

LM2686MTC/NOPB Application Field

The LM2686MTC/NOPB can be used for applications such as post-regulation, power supplies and general-purpose voltage conversion. The device is designed for a wide input voltage range of 4-40V and output voltage range of 0.8-15V. The device also contains an adjustable current limit that allows a fast turn-on response, as well as a soft start feature which eliminates input voltage/current overshoot. Other features include over-voltage and over-temperature protection. This device is ideal for applications which require efficiency, low ripple and low noise.

Working Principle

The LM2686MTC/NOPB is a switching regulator which provides a regulated output voltage while consuming a constant input current. It has a step-down topology with an external resistor divider to set the output voltage. The device contains an adjustable current limit and soft start circuit which regulate the load current for better load regulation. The device also contains an adjustable loop bandwidth that enables the user to optimize the device for different types of applications.

The device can continuously handle both light and heavy loads due to the low output noise and large output current. Additionally, the device has a low dropout voltage which allows it to regulate efficiently at a much lower input voltage. The device also has a fast transient response which makes it ideal for applications that require a fast response time.

The device consists of two main components – an oscillator and an error amplifier. The oscillator generates the modulated waveform for the switching regulator. The error amplifier compares the feedback voltage to the reference voltage and provides the output voltage regulation. The device also has a soft start circuit which eliminates the input voltage and current over-shoot due to its fast transient response time.

Conclusion

The LM2686MTC/NOPB is a high efficiency, step-down switching regulator designed to handle current loads of up to 5A. It has an adjustable loop bandwidth, adjustable current limit and soft start circuit which enable the user to optimize the device for different applications. The device also has a wide input voltage range and a low dropout voltage to ensure efficiency. This device is ideal for applications which require a fast response time and efficient power conversion.