Catalog
36-V, 5-A synchronous buck converter
Key Features
• Functional Safety-CapableDocumentation available to aid functional safety system designConfigured for rugged industrial applicationsWide Input voltage range: 4 V to 36 V4-A or 5-A continuous output current±1.0% tolerance voltage reference at room temperatureMinimum switching-on time: 75 ns (typical)Low Quiescent current: 25 µAAdjustable Frequency: 200 kHz to 1.1 MHzFrequency spread spectrum (PFM variant)Protection featuresPrecision enable inputOpen-drain PGOODVINundervoltage lockout (UVLO)Cycle-by-cycle current limitingShort-circuit protection with hiccup modeThermal shutdownLow dropout mode operationJunction temperature range: –40°C to 150°CSmall solution size and ease of useIntegrated synchronous rectificationInternal compensation for ease of useWSON-12 packageVarious options in pin-to-pin compatible packagePFM and forced PWM (FPWM) optionsCreate a custom design using the LMR5144x0 with theWEBENCH®Power DesignerFunctional Safety-CapableDocumentation available to aid functional safety system designConfigured for rugged industrial applicationsWide Input voltage range: 4 V to 36 V4-A or 5-A continuous output current±1.0% tolerance voltage reference at room temperatureMinimum switching-on time: 75 ns (typical)Low Quiescent current: 25 µAAdjustable Frequency: 200 kHz to 1.1 MHzFrequency spread spectrum (PFM variant)Protection featuresPrecision enable inputOpen-drain PGOODVINundervoltage lockout (UVLO)Cycle-by-cycle current limitingShort-circuit protection with hiccup modeThermal shutdownLow dropout mode operationJunction temperature range: –40°C to 150°CSmall solution size and ease of useIntegrated synchronous rectificationInternal compensation for ease of useWSON-12 packageVarious options in pin-to-pin compatible packagePFM and forced PWM (FPWM) optionsCreate a custom design using the LMR5144x0 with theWEBENCH®Power Designer
Description
AI
The LMR514x0 is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 4-A or 5-A load current. With a wide input range of 4 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.
The LMR514x0 features adjustable switching frequency from 200 kHz to 1.1 MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has PFM version to realize high efficiency at light load and 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 allows the device to be used with minimum 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. The LMR514x0 is available in WSON-12 package.
The LMR514x0 is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 4-A or 5-A load current. With a wide input range of 4 V to 36 V, the device is suitable for a wide range of industrial applications for power conditioning from an unregulated source.
The LMR514x0 features adjustable switching frequency from 200 kHz to 1.1 MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has PFM version to realize high efficiency at light load and 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 allows the device to be used with minimum 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. The LMR514x0 is available in WSON-12 package.
