Welcome to the Non-Isolated DC/DC Section of the TI E2E Support Community. Ask questions, share knowledge, explore ideas, and help solve problems with fellow engineers. To post a question, click on the forum tab then "New Post".
Q:
Can I operate my IC above the recommended maximum ambient temperature (which is usually 85 C) if I keep the junction temperature below the recommended maximum (which is usually 125 C)?
Are the electrical characteristics specified in this case?
A:
Yes and Yes.
For the TPS62xxx devices, the electrical characteristics are tested, characterized, and specified over the recommended junction temperature range. The recommended ambient temperature is a legacy parameter but still has some use. Generally, operating below the maximum recommended ambient temperature with a good thermal layout will keep the maximum junction temperature below the recommended maximum.