ncp1511 ON Semiconductor, ncp1511 Datasheet - Page 9

• Manufacturer Part Number: ncp1511
• Description: Up To 500 Ma, High Efficiency Synchronous Step-down Dc-dc Converter
• Manufacturer: ON Semiconductor

V
I
PWM
Figure 22. Line Transient Response for PWM
out
out
3.0 V
= 300 mA
= 1.89 V
Figure 24. Load Transient Response
V
V
PWM
in
out
300 mA
= 3.6 V
= 1.89 V
200 ms/div
50 ms/div
3.6 V
10 mA
PM
Figure 26. Transition between PWM and PM
V
V
I
out
out
in
V
1 V/div
V
AC Coupled
10 mV/div
V
AC Coupled
20 mV/div
= 3.6 V
= 30 mA
in
out
= 1.5 V
out
PWM
V
1 V/div
in
http://onsemi.com
200 ms/div
9
V
I
PM
out
out
Figure 23. Line Transient Response for PM
Figure 25. Output Voltage Transition from
3.0 V
= 30 mA
= 1.89 V
1.5 V
2.0 V
V
AC Coupled
10 mV/div
out
SYNC
PM
0
1.5 V to 1.89 V
200 ms/div
200 ms/div
3.6 V
V
100 mV/div
CB0=1
V
I
PWM
1.89 V
out
out
in
= 3.6 V
= 300 mA
V
1 V/div
V
AC Coupled
10 mV/div
in
out
CB1
2 V/div