LMR33630ADDA

DC to DC switching regulators are commonly used for mobile, automotive and industrial applications, where their high efficiency, fast transient response and low output voltage ripple are key performance characteristics. The Texas Instruments LMR33630ADDA is a synchronous buck regulator designed for use as an automotive system power manager for gate drives, microcontrollers, radio and infotainment systems with low input and output voltage requirements.

The LMR33630ADDA is a synchronous buck regulator footprint (TSSOP-16) that includes a low-side N-channel MOSFET (rated up to 0.8V) and a low on-resistance high-side N-channel MOSFET (rated up to 1V). The device operates on input voltages from 2.25V to 18V, and provides a fixed-output voltage of 0.9V, with an output current capability of 15A. It also features integrated protection features including an overcurrent limit, thermal overload protection, and overvoltage/undervoltage protection.

The LMR33630ADDA synchronous buck regulator’s main characteristics include a wide input voltage range, low quiescent current, high efficiency, and a low profile package. It is suited for applications in automotive, avionics, industrial, and consumer electronics amongst others, with the capability of driving various types of loads.

The main components of the LMR33630ADDA are a synchronous rectifier, a high-side switch, a low-side switch and a control circuit, which perform the main functions of regulating input and output voltage, as well as providing protection for the circuit components. Power is converted in the synchronous rectifier, which draws current from the input, then regulates it to the necessary output voltages. The high-side and low-side switches control the direction of current flow and are regulated by the control circuit, which continuously monitors the voltage and current across the load.

The LMR33630ADDA is designed to operate at high frequencies, utilizing a fixed-frequency PWM technique to provide fast transient response and improve efficiency. It is designed to protect against overcurrent, over-temperature, and overvoltage conditions with comprehensive protection features for increased safety and higher reliability. Additionally, the device features internal compensation, enabling reduction of the external component count. This makes it possible to reduce the overall size and cost of the system while providing excellent load and line regulation.

In summary, the LMR33630ADDA synchronous buck regulator is an ideal choice for automotive, avionics, and consumer electronics applications where efficiency, reliability, and cost must be considered. Its wide input voltage range and integrated protection features make it an ideal choice for automotive and consumer applications.