LM21215MHE/NOPB

The LM21215MHE/NOPB is a switching regulator designed to provide power conversion specifically for applications that require a wide input voltage range. Its primary benefit is its ability to allow higher efficiency conversions in applications where the expected input voltage may be erratic or unstable. The regulator supports a wide range of operating temperature and both the input and the output. Additionally, it is designed to be exceptionally power-efficient and to conserve energy by providing enhanced transient performance.

Application Fields

The LM21215MHE/NOPB is a fully integrated switching regulator that is applicable for DC-to-DC applications—converting input voltages of two to 60 volts to regulated outputs of two to 60 volts. It is primarily targeted for start-up and battery-powered applications. Because of its wide voltage range, the regulator can be used in a variety of consumer, industrial, and automotive applications, such as industrial control, consumer appliances, and power distribution systems.

Working Principle

The LM21215MHE/NOPB uses a two-stage topology to reduce noise and to maintain a low output impedance. The first stage is a buck (step down) mode that reduces the input voltage to a desired output level, while the second stage is an LDO (low dropout) regulator that ensures the output voltage is precisely maintained with a minimal quiescent current (IQ). This topology eliminates the need for bulky filter capacitors and inductors, reducing the number of external components required to operate the regulator.

The LM21215MHE/NOPB regulator employs a fixed-frequency Pulse Width Modulation (PWM) controller, allowing the user to select an optimal frequency depending on the application requirements. It also offers an adjustable frequency, enabling the device to support a wide range of input voltages. Moreover, the LM21215MHE/NOPB supports both open loop and standard voltage-mode control schemes.

The main advantage of the LM21215MHE/NOPB is its ability to provide higher efficiency conversions in applications that require a wide input voltage range. Its low input and output ripple, advanced protection features, and low quiescent current make the regulator extremely power-efficient and well-suited for today’s energy-thirsty applications. Additionally, the device provides several built-in protection features for over current, over voltage, and under voltage operations.

In summary, the LM21215MHE/NOPB is a switching regulator that is used in a variety of applications. It offers high efficiency in applications where the input voltage is erratic or unstable, as well as low input and output ripple, advanced protection features, and low quiescent current. The regulator also provides adjustable frequencies, allowing the user to select an optimal frequency for their specific application. Additionally, the LM21215MHE/NOPB provides several built-in protection features for over current, over voltage, and under voltage operations.