Datasheet

UG-179 Evaluation Board User Guide
Rev. 0 | Page 6 of 12
CH1 1V
CH4 500mA Ω
CH2 10V M100µs A CH3 8V
2
4
3
1
CH3 10V
B
W
B
W
B
W
B
W
V
OUT
IL
EN
SW
09232-026
Figure 8. Soft Start with 1 A Resistance Load, f
SW
= 1.4 MHz
2
1
4
V
OUT
I
OUT
SW
CH1 50mV
CH4 500mA Ω
CH2 10V M100µs A CH4 630mA
B
W
B
W
B
W
09232-058
Figure 9. ADP2301 Load Transient, 0.2 A to 1.0 A, V
OUT
= 3.3 V, V
IN
= 12 V
(f
SW
= 1.4 MHz, L = 4.7 μH, C
OUT
= 22 μF)
2
1
4
V
OUT
I
OUT
SW
CH1 100mV
CH4 500mA Ω
CH2 10V M100µs A CH4 630mA
B
W
B
W
B
W
0
9232-060
Figure 10. ADP2300 Load Transient, 0.2 A to 1.0 A, V
OUT
= 3.3 V, V
IN
= 12 V
(f
SW
= 700 kHz, L = 10 μH, C
OUT
= 22 μF)
1
3
V
OUT
V
IN
SW
CH1 5mV
CH3 5V
CH2 10V M1ms A CH3 11.4V
B
W
B
W
2
0
9232-061
Figure 11. ADP2301 Line Transient,
7 V to 15 V, V
OUT
= 3.3 V, I
OUT
= 1.2 A, f
SW
= 1.4 MHz
–100
–80
–60
–40
–20
0
20
40
60
80
100
–200
–160
–120
–80
–40
0
40
80
120
160
200
1k 10k 100k 1M
MAGNITUDE [B/A] (dB) PHASE [B/A] (Degrees)
CROSS FREQUENCY: 80kHz
PHASE MARGIN: 68°
FREQUENCY (Hz)
09232-063
Figure 12. ADP2301 Bode Plot, V
OUT
= 3.3 V, V
IN
= 12 V
(f
SW
= 1.4 MHz, L = 4.7 μH, C
OUT
= 22 μF)
–100
–80
–60
–40
–20
0
20
40
60
80
100
–200
–160
–120
–80
–40
0
40
80
120
160
200
1k 10k 100k
FREQUENCY (Hz)
1
1M
MAGNITUDE [B/A] (dB) PHASE [B/A] (Degrees)
CROSS FREQUENCY: 47kHz
PHASE MARGIN: 77°
09232-065
Figure 13. ADP2300 Bode Plot, V
OUT
= 3.3 V, V
IN
= 12 V
(f
SW
= 700 kHz, L = 10 μH, C
OUT
= 22 μF)