Design Tips

June 2021
60 V Input Monolithic Converter Powers Critical Circuits Without Supercaps

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Figure 1. The 5 V output converter (U1) provides hold-up power for protected load on the 3.3 V output (U2). Note that the pin MODE/SYNC of U1 is left floating, allowing the LTC3649 to enter boost mode

The LTC3649 is a monolithic step-down regulator capable of operating from an input voltage range of 3.1 V to 60 V, and efficiently producing a single resistor-programmable output voltage at up to 4 A of output current. These features alone make it a compelling industrial or automotive supply for output voltages fr
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