LMR51606XDBVR

The LMR516xx is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 0.6-A and 1-A load current. With a wide input range of 4 V to 65 V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source. The LMR516xx operates at 400-kHz and 1.1-MHz switching frequency to support use of relatively small inductors for an optimized design size. The LMR516xx has a PFM version to realize high efficiency at light load and a FPWM version to achieve constant frequency and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allow the device to be used with minimal external components. The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation.

Applications

• Major appliances
• PLC, DCS, and PAC
• Smart meters
• Power delivery

Key features

• Functional Safety-Capable Documentation available to aid functional safety system design
• Configured for rugged industrial applications
• 4-V to 65-V input voltage range
• Input transient protection up to 70-V
• 0.6-A/1-A continuous output current
• 80-ns minimum switching on time
• Fixed 400-kHz and 1.1-MHz switching frequency
• -40°C to 150°C junction temperature range
• 98% maximum duty cycle
• Monotonic start-up with pre-biased output
• Short-circuit protection with hiccup mode
• Precision enable
• ±1.5% tolerance voltage reference
• Small design size and ease of use
• Integrated synchronous rectification
• Internal compensation for ease of use
• SOT-23 package
• Various options in pin-to-pin compatible package
• PFM and forced PWM (FPWM) options
• Pin-to-pin compatible with the LMR16006, LV2862, LMR50410, TPS560430, LMR54406, and LMR54410
• Create a custom design using the LMR516xx with the WEBENCH Power Designer