LMR51610XDBVR

The LMR516xx is a simple, easy-to-use wide-VIN synchronous buck converter capable of driving load currents up to 0.6A and 1A. With a wide input voltage range of 4V to 65V, it is suitable for a variety of industrial applications requiring power regulation from unregulated sources. The LMR516xx operates at switching frequencies of 400kHz and 1.1MHz, supporting the use of relatively small inductors for an optimized design footprint. The LMR516xx is available in a PFM version for high efficiency at light loads and an FPWM version for constant-frequency operation with low output voltage ripple across the full load range. Soft-start and compensation circuitry are implemented internally, minimizing the number of external components required. The device features built-in protection functions, including cycle-by-cycle current limiting, discontinuous mode short-circuit protection, and thermal shutdown in the event of excessive power dissipation.

Applications

• Large Appliances
• PLC, DCS and PAC
• Smart Meters
• Power Transmission

Key features

• Functional Safety
• Documentation available for functional safety system design
• Designed for harsh industrial applications
• 4V to 65V input voltage range
• Input transient protection up to 70V
• 0.6A/1A continuous output current
• Minimum on-time: 80ns
• Fixed switching frequency: 400kHz and 1.1MHz
• Junction temperature range: -40°C to 150°C
• 98% maximum duty cycle
• Monotonic startup with pre-biased output
• Hiccup mode short-circuit protection
• Precision enable pin
• ±1.5% tolerance voltage reference
• Compact design and ease of use
• Integrated synchronous rectification
• Built-in compensation for ease of use
• SOT-23 package
• Multiple options in pin-to-pin compatible packages
• PFM and forced PWM (FPWM) options
• Pin-to-pin compatible with LMR16006, LV2862, LMR50410, TPS560430, LMR54406, and LMR54410
• Create custom designs using LMR516xx with WEBENCH Power Designer