LM5143RHAR Texas Instruments - Yeehing Electronics

3.5-V to 65-V, dual-output, stackable, synchronous buck DC/DC controller with ultra-low IQ

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Specifications

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More Information

The LM5143 is a 65-V DC/DC synchronous buck controller for high-current single or dual outputs. Deriving from a family of wide-VIN range controllers, the device uses an interleaved, stackable, peak current-mode control architecture for easy loop compensation, fast transient response, excellent load and line regulation, and accurate current sharing with paralleled phases for higher output current. A high-side switch minimum on time of 65 ns provides large step-down ratios, enabling the direct conversion from 12-V, 24-V, or 48-V inputs to low-voltage rails for reduced system complexity and cost. The LM5143 continues to operate during input voltage dips as low as 3.5 V, at nearly 100% duty cycle if needed.