Datasheet

Data Sheet ADP2503/ADP2504
Rev. C | Page 9 of 16
07475-011
CH1 100mV
B
W
CH4 2.00V
B
W
CH2 500mA Ω M100µs A CH2 410mA
4
1
2
T 45.40%
V
IN
= 3.6V
V
OUT
= 3.3V
SW1
I
OUT
V
OUT
Figure 21. Mode Change by Load Transients, Load Fall (V
OUT
= 3.3 V)
07475-012
CH1 50.0mV
B
W
CH4 5.00V
B
W
CH3 5.00V
B
W
CH2 250mA Ω M 400ns A CH3 2.40V
3
4
1
2
T 50.00%
V
IN
= 4.0V
V
OUT
= 3.3V
SW2
SW1
I
SW
V
OUT
Figure 22. Typical PWM Switching Waveform, Buck Operation (V
OUT
= 3.3 V)
07475-013
CH1 20.0mV
B
W
CH4 5.00V
B
W
CH3 5.00V
B
W
CH2 250mA Ω M 400ns A CH4 2.40V
3
1
2
4
T 50.80%
V
IN
= 3.0V
V
OUT
= 3.3V
SW2
SW1
I
SW
V
OUT
Figure 23. Typical PWM Switching Waveform, Boost Operation (V
OUT
= 3.3 V)
07475-027
CH1 20.0mV
B
W
CH4 5.00V
B
W
CH3 5.00V
B
W
CH2 250mA Ω M 400ns A CH4 2.40V
3
1
2
4
T 50.00%
V
IN
= 3.0V
V
OUT
= 3.3V
SW2
SW1
I
SW
V
OUT
Figure 24. Typical PWM Switching Waveform, Buck-Boost Operation
(V
OUT
= 3.3 V)
07475-015
CH1 100mV
B
W
CH4 5.00V
B
W
CH3 5.00V
B
W
CH2 1.00A Ω M 4.00µs A CH2 820mA
3
4
1
2
T 15.20%
V
IN
= 3.0V
V
OUT
= 3.3V
SW2
SW1
I
SW
V
OUT
Figure 25. Typical PSM Switching Waveform, Buck-Boost Operation
(V
OUT
= 3.3 V)
07475-018
CH1 2.00V
B
W
CH4 5.00V
B
W
CH3 5.00V
B
W
CH2 500mAΩ
B
W
M 100µs A CH3 2.40V
4
1
3
2
T 9.400%
V
OUT
= 3.3V
EN
SW1
I
SW
V
OUT
Figure 26. Startup into PWM Mode (V
OUT
= 3.3 V, I
OUT
= 300 mA)