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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Flmr51606″>View Datasheet

Texas Instruments LMR516xx SIMPLE SWITCHER® Power Converters

Texas Instruments LMR516xx SIMPLE SWITCHER® Power Converters are wide-VIN, easy-to-use synchronous buck converters capable of driving up to 0.6A and 1A load current. With a wide input range of 4V to 65V, the device is designed for various industrial applications for power conditioning from an unregulated source.

The LMR516xx operates at 400kHz and 1.1MHz switching frequency to support relatively small inductors for an optimized design size. The LMR516xx has a PFM version to realize high efficiency at light load and an 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 Texas Instruments LMR516xx 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.

Features

  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Configured for rugged industrial applications
    • 4V to 65V input voltage range
    • Input transient protection up to 70V
    • 0.6A/1A continuous output current
    • 80ns minimum switching on time
    • Fixed 400kHz and 1.1MHz 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

Applications

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

Functional Block Diagram

Block Diagram - Texas Instruments LMR516xx SIMPLE SWITCHER® Power Converters

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Texas Instruments LMR516xx SIMPLE SWITCHER® Power Converters