Datasheet

ADP2102
Rev. B | Page 9 of 24
06631-051
4.5
4.0
3.5
3.0
2.5
2.0
1.5
SWITCHING FREQUENCY (MHz)
0 100 200 300 400 500 600
LOAD CURRENT (mA)
0.8V
1.5V
1.8V
1V
1.25V
1.375V
1.875V
1.2V
T
A
= 25°C
Figure 22. Switching Frequency vs. Load Current
1.08
1.07
1.06
1.05
1.04
1.03
1.02
1.01
1.00
CURRENT LIMIT (A)
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7
INPUT VOLTAGE (V)
06631-029
T
A
= 25°C
Figure 23. Valley Current Limit
400
350
300
250
200
150
100
50
0
SWITCH ON RESISTANCE (mΩ)
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4
INPUT VOLTAGE (V)
PMOS SWITCH
NMOS SWITCH
06631-027
T
A
= 25°C
Figure 24. Switch On Resistance vs. Input Voltage
350
300
250
200
150
100
50
0
400
SWITCH ON RESISTANCE (mΩ)
–40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
06631-054
PMOS SWITCH
NMOS SWITCH
Figure 25. Switch On Resistance vs. Temperature
06631-014
CH1 500mA Ω
CH4 2.00V
CH2 2.00V M 1.00µs A CH4 2.76V
B
W
B
W
B
W
4
1
2
T
T 51.00%
CH1: IL
CH2: V
OUT
CH4: LX
T
A
= 25°C
Figure 26. PSM Mode Operation at Very Light Loads (10 mA)
06631-022
CH1 50.0mV
CH3 50.0mA Ω
M 100µs A CH3 86.0mA
B
W
B
W
1
3
T
CCM
CH1: V
OUT
CH3: IL
T
A
= 25°C
PSMPSM
Figure 27. PSM Mode Entry—Exit Operation (10 mA to 50 mA to 10 mA)