ADP2121 Analog Devices, ADP2121 Datasheet - Page 9

• Manufacturer Part Number: ADP2121
• Description: 600 mA, 6 MHz Synchronous Step-Down DC-to-DC Converter
• Manufacturer: Analog Devices

Figure 24. Auto Mode Falling Switching Threshold vs. Input Voltage for All
Figure 23. Auto Mode Rising Switching Threshold vs. Input Voltage for All
200
180
160
140
120
100
190
180
170
160
150
140
130
120
180
160
140
120
100
110
80
60
40
Figure 22. Auto Mode Switching Threshold vs. Input Voltage
80
60
40
20
0
2.3
2.3
2.3
PWM OPERATION
V
V
V
V
V
2.7
2.7
2.7
OUT
OUT
OUT
OUT
OUT
PWM OPERATION
= 1.8V
= 1.82V
= 1.85V
= 1.875V
= 2.3V
3.1
3.1
3.1
Voltage Options
Voltage Options
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
3.5
3.5
3.5
PFM OPERATION
3.9
3.9
3.9
PFM OPERATION
4.3
4.3
4.3
4.7
4.7
4.7
V
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
5.1
= 1.8V
= 1.82V
= 1.85V
= 1.875V
= 2.3V
5.1
5.1
= 1.82V
5.5
5.5
5.5
Rev. B | Page 9 of 20
Figure 25. Load Transient Response, 0 mA to 150 mA
Figure 26. Load Transient Response, 0 mA to 150 mA
Figure 27. Load Transient Response, 0 mA to 150 mA
OUTPUT VOLTAGE (50mV/DIV)
OUTPUT VOLTAGE (50mV/DIV)
OUTPUT VOLTAGE (50mV/DIV)
LOAD CURRENT (100mA/DIV)
LOAD CURRENT (100mA/DIV)
LOAD CURRENT (100mA/DIV)
(V
(V
(V
IN
IN
IN
TIME (20µs/DIV)
TIME (20µs/DIV)
TIME (20µs/DIV)
= 2.5 V, Auto Mode)
= 3.6 V, Auto Mode)
= 4.5 V, Auto Mode)
ADP2121