LM20134MHE/NOPB

LM20134MHE/NOPB Application Field and Working Principle

The LM20134MHE/NOPB is a dual-output buck converter with synchronous rectification capable of powering complex high frequency electronic systems or providing power up to 20 W with the added thermal management benefits of a thermally enhanced package.

The LM20134MHE/NOPB can be used for a wide variety of applications, such as: disk drives, set-top boxes, portable medical devices, notebook computers, data storage systems and other power-intense equipment.

LM20134MHE/NOPB\'s Working Principle

The LM20134MHE/NOPB\'s working principle is based on a two-stage DC-DC conversion process, where the first stage regulates the input voltage from the power source and the second stage generates the output voltage. The input voltage is regulated by a buck converter, while the output voltage is generated by a synchronous rectification buck converter. The synchronous rectification buck converter utilizes an improved efficiency, due to the rectified current flowing directly to the output.

The LM20134MHE/NOPB\'s switching frequency of 2.2 MHz allows the device to operate at higher frequencies, meaning it is able to target smaller, lighter and more efficient designs while still meeting the demands of most systems. Additionally, the integrated power good indicator allows the controller to overly current, under voltage, and over voltage protection.

Features and Benefits

• Dual output: 5V and 3.3V
• Wide input voltage range of 6.5 V to 19 V
• Output maximum ratings of 2A and 0.5A with foldback over current protection
• High efficiency synchronous buck converter
• Switch frequency of 2.2MHz
• Integrated power good indicator
• Thermally enhanced package

Conclusion

The LM20134MHE/NOPB is a dual-output buck converter with synchronous rectification capabable of powering complex high frequency electronics systems or providing power up to 20W with the added thermal management benefits of a thermally enhanced package. Its wide input voltage range and output current ratings make it suitable for a wide range of applications, ranging from disk drives to notebook computers and other power-intense equipment. Additionally, its high switching frequency allow it to operate at higher frequencies, while its integrated power good indicator enables it to overly current, under voltage and over voltage protection.