SLLSEF3C June 2013 – March 2021 SN6501-Q1
The SN6501 transformer driver is designed for low-power push-pull converters with input and output voltages in the range of 3 V to 5.5 V. While converter designs with higher output voltages are possible, care must be taken that higher turns ratios don’t lead to primary currents that exceed the SN6501 specified current limits.
Unlike SN6505 devices, SN6501 does not have soft-start, internal current limit, or thermal shutdown (TSD) features. Therefore, unregulated large currents exceeding device absolute maximum current ratings may damage the device or affect its long-term reliability. In addition, high capacitive loads at the isolated power supply output may appear as short circuits to SN6501 during power-up and may exceed the device's maximum current ratings. When using SN6501, it is recommended to incorporate LDOs with low short-circuit current limits or soft-start features to ensure excessive current is not drawn from SN6501.