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TI LMR33630ADDAR 3A Synchronous Buck Converter With Ultra-Low EMI

In the context of the increasing complexity of today's electronic equipment, energy efficiency requirements continue to improve, power management technology is facing unprecedented challenges. As a leading authorised independent distributor of electronic components, Shenzhen Mingjiada Electronics Co., Ltd. offers a long-term supply of LMR33630ADDAR synchronous buck converter, a 3A buck converter with ultra-low EMI designed for harsh industrial environments, which meets the needs of modern electronic systems for highly efficient, compact, and reliable power solutions.

Product Overview Of LMR33630ADDAR

LMR33630ADDAR SIMPLE SWITCHER regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LMR33630ADDAR drives up to 3 A of load current from an input of up to 36 V. The LMR33630ADDAR provides high light load efficiency and output accuracy in a very small solution size. Features such as a power-good flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. The LMR33630ADDAR automatically folds back frequency at light load to improve efficiency. Integration eliminates most external components and provides a pinout designed for simple PCB layout. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. The LMR33630ADDAR device is also available in an AEC-Q100-qualified version.

Technical Features Of LMR33630ADDAR

Ultra-low EMI performance is one of the outstanding features of the LMR33630ADDAR. The device significantly reduces switching noise and electromagnetic interference (EMI) by integrating HotRod™ packaging technology and parallel input current path design, enabling it to meet stringent EMI standards such as CISPR 25, making it ideal for application scenarios with high EMC requirements. In addition, the LMR33630ADDAR device adopts a peak current mode control architecture with a minimum on-time of only 68ns, and supports a variety of switching frequency options of 400kHz, 1.4MHz and 2.1MHz, providing greater flexibility for system design.

The LMR33630ADDAR also excels in terms of energy efficiency. With peak efficiency exceeding 95% and quiescent current as low as 25μA at light load, the LMR33630ADDAR maintains high efficiency over a wide load range. The device automatically folds back its frequency at light loads to further improve efficiency, an intelligent power management feature that makes it particularly suitable for battery-powered or long standby applications.

The LMR33630ADDAR is available in an 8-pin HSOIC package (SOP-8) with a compact solution size, greatly simplifying the PCB layout by integrating a compensation network and optimising the pin arrangement design, reducing the number of external components and lowering the system complexity and BOM cost. the LMR33630ADDAR device also integrates a comprehensive range of protection features, including thermal The LMR33630ADDAR device also integrates comprehensive protection functions, including thermal shutdown, input undervoltage lockout, cycle-by-cycle current limiting, and intermittent short-circuit protection, to ensure safe and reliable operation of the system under various abnormal conditions.

Typical Application Scenarios Of LMR33630ADDAR

With its wide input voltage range, high efficiency and ultra-low EMI characteristics, the LMR33630ADDAR demonstrates excellent suitability in many industrial and commercial applications.

In motor drive systems, the LMR33630ADDAR is an ideal choice for power management. Whether it's a high-efficiency power system for drones, control circuits for AC inverters, or power modules for variable frequency drives and servo systems, the device provides stable and reliable power conversion. Its wide input voltage range is particularly well suited to cope with voltage fluctuations that can occur during motor starting and braking, while the ultra-low EMI characteristics help to reduce interference with sensitive control signals.

Factory and building automation is another important application area. In PLC (Programmable Logic Controller) CPU boards, HVAC (Heating, Ventilation and Air Conditioning) control systems, and lift control systems, the LMR33630ADDAR provides highly efficient power supplies for processors, sensors and communication modules. Its precision enable terminal and power normal state flag functions facilitate complex power timing control and meet the stringent power management requirements of modern automation systems.

In addition, the LMR33630ADDAR is widely used in a variety of general-purpose wide input voltage power supply designs. Whether for industrial field instrumentation, test and measurement equipment, or communications infrastructure, the device provides an efficient and compact power solution. Its 3A output current capability is sufficient to drive most small to medium power loads, while the adjustable output voltage design meets the power supply needs of different circuit modules.

Notably, the LMR33630ADDAR is also available in an AEC-Q100-compliant version for automotive electronics applications. In in-vehicle infotainment systems, advanced driver assistance systems (ADAS), and body control modules, the device is able to meet the automotive industry's stringent requirements for power supply reliability and EMI performance.