ADP1972

Data Sheet

ADJUSTING THE SOFT START PERIOD

The ADP1972 has a programmable soft start feature that

prevents output voltage overshoot during startup. Refer to

Figure 18 for a soft start diagram. Use the following equation to

SS

SS

REG

C

I

t

×

= 0.52

(12)

capacitor is not used, the internal 5 µA (typical) current source

capacitor is not used, there is no soft start control internal to the

ADP1972, and the system could produce a large output overshoot

not used, ensure that the output overshoot is not large enough

to trip the hiccup current limit during startup.

Rev. B | Page 16 of 18