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Notes on Use of Auto-Track™

PTH04000W

SLTS247B – JUNE 2005 – REVISED OCTOBER 2007

1. The Auto-Track function tracks almost any voltage ramp during power up, and is compatible with ramp

speeds of up to 1 V/ms.

2. The Track pin voltage must be allowed to rise above the module set-point voltage before the module

regulates at its adjusted set-point voltage.

4. The module cannot follow a voltage at its track control input until it has completed its soft-start initialization.

This takes about 20 ms from the time that a valid voltage has been applied to its input. During this period, it

is recommended that the Track pin be held at ground potential.

disabled, the output voltage rises at a quicker and more linear rate after input power has been applied.

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