VLCF4020-6R8 ONSEMI [ON Semiconductor], VLCF4020-6R8 Datasheet - Page 8

• Manufacturer Part Number: VLCF4020-6R8
• Description: Up to 500 mA, High Efficiency Synchronous Step-Down DC-DC Converter
• Manufacturer: ONSEMI [ON Semiconductor]

2.0
1.5
1.0
0.5
0
Figure 18. Light Load PWM Switching Waveform
Figure 20. Pulsed Mode Switching Waveform
0
V
V
T
PWM Mode
Figure 16. Output Voltage vs. Shutdown Pin
A
out
in
(V
= 25 C
(V
= 3.6 V
in
0.2
= 1.5 V
in
= 3.6 V, V
= 3.6 V, V
0.4
out
out
0.6
1 ms/div
1 ms/div
= 1.5 V, I
Voltage
V
= 1.5 V, I
SHD
(V)
0.8
out
V
1 V/div
V
1 V/div
V
AC Coupled
10 mV/div
out
V
AC Coupled
10 mV/div
LX
LX
out
out
= 30 mA)
= 30 mA)
1.0
1.2
http://onsemi.com
1.4
NCP1511
8
Figure 19. Heavy Load PWM Switching Waveform
2.0
1.5
1.0
0.5
0
0
V
V
T
PWM Mode
(V
A
(V
in
out
0
0
= 25 C
in
= 3.6 V
in
Figure 17. Transition Level of CB Pins
0.2
= 1.5 V
= 3.6 V, V
= 3.6 V, V
Figure 21. Soft−Start
0.4
out
out
500 ms/div
1 ms/div
= 1.5 V, I
0.6
= 1.5 V, I
V
CB
(V)
0.8
out
V
1 V/div
V
AC Coupled
10 mV/div
out
V
1 V/div
V
0.5 V/div
LX
out
shdn
out
= 300 mA)
= 150 mA)
1.0
2 V
1.5 V
1.2
1.4