Update: 30 September, 2023
The LM2747 is a high-precision synchronous buck controller that provides simple step-down conversion with output voltages as low as 0.6V. The device features an adjustable fixed-frequency voltage-mode PWM control architecture, with frequency adjustable from 50kHz to 1MHz with one external resistor. In addition, the LM2747 also allows the switching frequency to be synchronized to an external clock signal in the range of 250kHz to 1MHz. This wide range of switching frequency provides the power supply designer the flexibility to make better tradeoffs between component size, cost, and efficiency. Features include the ability to startup with a pre-biased load on the output, soft-start, input undervoltage lockout (UVLO) and Power Good (based on both undervoltage and overvoltage detection). In addition, the shutdown pin of the IC can be used for providing power-down.
File format: PDF
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MD5 Checksum: D4E3ED3B40BDD2642E909BCAAC6458DF
Publication date: 12 June, 2012
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PDF Link: National Semiconductor LM2747 PDF