LMR51635数据手册TI中文资料规格书

描述 Description

The LMR51635 is a wide-VIN, easy-to-use, synchronous buck converter capable of driving up to 3.5A load current. With a wide input range of 4.3V to 60V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR51635 operates at 400kHz switching frequency to support use of relatively small inductors for an optimized design size. The device has pulse frequency modulation (PFM version) to realize high efficiency at light load. 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.

特性 Features

• Configured for rugged industrial applications:
• 4.3V to 60V input voltage range
• 3.5A continuous output current
• 75ns minimum switching on time
• 400kHz switching frequency
• Frequency spread spectrum (PFM variant)
• –40°C to 150°C junction temperature range
• 96% maximum duty cycle
• Monotonic start-up with prebiased output
• Short-circuit protection with hiccup mode
• Precision enable
• ±1% tolerance voltage reference at room temperature

• Small design size and ease of use:
• Integrated synchronous rectification
• Internal compensation for ease of use
• SOT-23 package

• Create a custom design using the LMR51635 with the with the WEBENCH Power Designer