LMR36520ADDAR

The LMR36520 regulator is an easy-to-use synchronous buck DC/DC SIMPLE SWITCHER converter. With integrated high-side and low-side power MOSFETs, it delivers output current up to 2A over a wide input voltage range of 4.2V to 65V. Transient voltage tolerance up to 70V helps reduce solution size and cost, providing overvoltage protection and meeting the IEC 61000-4-5 surge immunity requirements. The LMR36520 uses a peak current mode control mechanism to deliver excellent efficiency and output voltage accuracy. The precision enable feature offers the flexibility to connect directly to a wide input voltage range or to precisely control device startup and shutdown. The power-good flag with built-in filtering and delay provides a true indication of system status, eliminating the need for an external supervisor. Through integration and internal compensation, the device reduces external component count and features a pin arrangement designed for simple PCB layout. Its feature set is optimized to simplify implementation across a wide range of end equipment. The LMR36520 is pin-to-pin compatible with the LMR36510 (65V, 1A), LMR33610, LMR33620, LMR33630, and LMR33640 (36V, 1A/2A/3A/4A), completing the latest family of SIMPLE SWITCHER converters. This enhances the ease of use and scalability of wide input voltage converters across commonly used voltage and current ratings without requiring a PCB layout redesign — reducing overall cost and design effort while shortening time to market.

Applications

• IP network cameras
• Analog security cameras
• HVAC valve and actuator control
• AC drive and servo drive control modules
• Analog input modules and mixed I/O modules
• Universal wide input voltage power supplies

Key features

• Designed for reliable and durable applications
• Up to 70V input transient protection
• Protection features: thermal shutdown, input undervoltage lockout, cycle-by-cycle current limiting, and hiccup short-circuit protection
• Ideal for scalable industrial power supplies
• Pin-compatible with: LMR36510 (65V, 1A), LMR33610/LMR33620/LMR33630/LMR33640 (36V, 1A, 2A, 3A, or 4A)
• Internal compensation helps reduce solution size, cost, and design complexity
• Switching frequency: 400kHz
• Input voltage range: 4.2V to 65V; output voltage range: 1V to 95% of VIN with low power dissipation across the full load range
• 90% efficiency at 400kHz (24VIN, 5VOUT, 1A)
• Improved light-load efficiency in PFM mode
• Quiescent current as low as 26μA
• Power Good output with filter and deglitch release