LMR51450-Q1中文资料具有低 Iq 的汽车级 36V、6A 同步降压转换器数据手册TI规格书

描述 Description

The LMR514x0-Q1 is a wide-VIN, easy-to-use, synchronous buck converter capable of driving up to 4A or 5A load current. With a wide input range of 4V to 36V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR514x0-Q1 features adjustable switching frequency from 200kHz to 1MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The device has pulse frequency modulation (PFM version) to realize high efficiency at light load, and forced pulse width modulation (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-Q1 is available in a WSON-12 package.

特性 Features

• AEC-Q100 qualified for automotive applications
• Functional Safety-Capable
• Supports automotive system requirements:
• 4A or 5A continuous output current
• Minimum switching-on time: 75ns (typical)
• Adjustable frequency: 200kHz to 1MHz
• Protection features:
• Open-drain PGOOD
• Cycle-by-cycle current limiting
• Thermal shutdown
• Small design size and ease of use
• Internal compensation for ease of use
• PFM and FPWM options in pin-to-pin compatible package
• Create a custom design using the LMR514x0-Q1 with the WEBENCH Power Designer