ST1S14 STMicroelectronics, ST1S14 Datasheet - Page 28

• Manufacturer Part Number: ST1S14
• Description: Up to 3 A step down switching regulator
• Manufacturer: STMicroelectronics

Application information
28/42
Figure 16. Minimum V
As a consequence for VIN > 12V the pulse by pulse current protection (in the worst case
scenario which is minimum V
peak current limitation over entire FB range 300mV < V
In fact at higher input voltage
current could escalate. The system typically meets the
than the nominal value thanks to the voltage drop across stray components.
Figure 17. I
In most of the application condition the pulse by pulse current limitation is effective to limit
the inductor current.
L
diverging triggers hiccup protection (V
FB
for effective pulse by pulse protection over VIN
OSET
Δ
Doc ID 17977 Rev 1
I
L TON
) could not be effective to limit the inductor current to the
could be higher than
Equation 31
FB
IN
< 1.22V.
= 48V)
Δ
I
L TOFF
at a current level higher
and so the inductor
ST1S14