ADP2109 Analog Devices, ADP2109 Datasheet - Page 9

• Manufacturer Part Number: ADP2109
• Description: Compact 600 mA, 3 MHz, Step-Down Converter with Output Discharge
• Manufacturer: Analog Devices

4
2
1
3
4
2
1
1
3
4
Figure 22. Typical Discharge Curve, V
CH1
CH3 5V
CH1
CH1
CH3 2.00V
Figure 23. Typical Power Save Mode Waveform, 50 mA
500mV
50mV
500mV
Figure 21. Startup, V
V
SW
OUT
I
L
CH2 500mA
CH4 5V
CH2 500mA
CH4 2V
CH4 5.00V
ENABLE
V
SW
OUT
V
SW
EN
OUT
M 40µs
I
M 2µs
M 4.00ms
T
T
L
T
OUT
19.80%
73.40%
20%
= 1.0 V, 600 mA
OUT
= 1.0 V, V
A CH1
A CH4
V
LOAD = 0mA
V
A CH3
IN
OUT
= 5.5V
IN
= 1.0V
= 5.5 V
2.64mA
380mV
2.1V
Rev. A | Page 9 of 16
Figure 25. Discharge Profile with Different Values of Output Capacitors
4
2
1
120
100
80
60
40
20
CH1
0
0
1
20mV
10µF
Figure 24. Typical PWM Waveform, 200 mA
2
3
CH2 200mA
CH4 2V
4
5
6
20µF
7
8
50µF
TIME (ms)
V
9
SW
OUT
I
M 200ns
L
T
10
20%
11
12
13
14
15
A CH4
16
17
ADP2109
18
2.64V
19
20