Datasheet

Data Sheet ADP1621
Rev. B | Page 11 of 32
CH1 5V CH2 5V
CH4 500mAΩ
M2µs A CH1 2.9V
1
2
4
T
A
= 25°C
V
IN
= 3.3V
V
OUT
= 5V
LOAD = 0.3A
CCM OPERATION
CH1 = GATE
CH4 = INDUCTOR CURRENT
CH2 = DRAIN VOLTAGE
06090-022
Figure 23. CCM Switching Waveform
CH1 1V
CH3 5V
CH2 5V M2ms A CH1 4.5V
1
2
3
T
A
= 25°C
V
IN
= 3.3V
V
OUT
= 5V
f
SW
= 220kHz
SOFT-START = 9.3ms
CH3 = GATE
CH1 = V
OUT
CH2 = SDSN
06090-023
Figure 24. Soft Start Waveform
CH1 50mV CH2 2V M400µs A CH2 3.8V
2
1
T
A
= 25°C
V
OUT
= 5V
LOAD AT V
OUT
= 1A
CH1 = V
OUT
, AC-COUPLED
CH2 = V
IN
FROM 3V TO 4V
06090-024
Figure 25. Line Transient Response of the Configuration Shown in Figure 1
with a 1 A Load
CH1 50mV
CH4 1AΩ
M200µs A CH4 700V
1
4
T
A
= 25°C
V
IN
= 3.3V
V
OUT
= 5V
LOAD CURRENT
FROM 0.2A TO 1.2A
OUTPUT, AC-COUPLED
06090-025
Figure 26. Load Transient Response of the Circuit Shown in Figure 1
CH1 50mV CH2 2V M400µs A CH2 3.8V
2
1
T
A
= 25°C
V
OUT
= 5V
NO LOAD AT V
OUT
CH1 = V
OUT
, AC-COUPLED
CH2 = V
IN
FROM 3V TO 4V
06090-026
Figure 27. Line Transient Response of the Configuration Shown in Figure 1
with No Load