Datasheet

ADP5022
Rev. C | Page 8 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
VIN1 = VIN2 = VIN3 = VDDA = 5.0 V, T
A
= 25°C, unless otherwise noted.
08253-023
2
3
T
1
CH1 2.00V M 200µs A CH1 1.92V
T 45.40%
B
W
CH2 2.00V
B
W
CH3 2.00V
B
W
VOUT1
VOUT2
VOUT3
Figure 4. 3-Channel Start-Up Waveforms, VIN3 Cascaded from VOUT1
0.00010
0.00008
0.00006
0.00004
0.00002
0
2.82.62.4 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4
V
IN
(V)
I
IN
A (A)
08253-064
Figure 5. System Quiescent Current vs. Input Voltage, VOUT1 = 0.8 V,
VOUT2 = 2.5 V, VIN3 = VOUT2, VOUT3 = 1.2 V, All Channels Unloaded
08253-021
4
1
3
T
2
CH1 2.00V
CH4 5.00V
M 40.0µs A CH3 2.2V
T 11.20%
B
W
CH2 50.0mA Ω
B
W
B
W
CH3 5.00V
B
W
SW
VOUT
EN
I
IN
Figure 6. Buck1 Startup, VOUT1 = 3.3 V, I
OUT1
= 10 mA
08253-020
4
1
3
T
2
CH1 2.00V
CH4 5.00V
M 40.0µs A CH3 2.2V
T 11.20%
B
W
CH2 50.0mA Ω
B
W
B
W
CH3 5.00V
B
W
SW
VOUT
EN
I
IN
Figure 7. Buck2 Startup, VOUT2 = 1.8 V, I
OUT2
= 5 mA
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
2.4 2.9 3.4 3.9 4.4 4.9 5.4
OUTPUT CURRENT (A)
INPUT VOLTAGE (V)
PWM TO PSM
PSM TO PWM
08253-067
Figure 8. Buck 2 PSM to PWM Transition, VOUT2 = 1.8 V
3.354
3.334
3.314
3.294
3.274
3.254
3.234
0 0.1 0.2 0.3 0.4 0.6
I
OUT
(A)
V
OUT
A (V)
08253-058
0.5
T
A
= +25°C
T
A
= –40°C
T
A
= +85°C
Figure 9. Buck1 Load Regulation Across Temperature, VOUT1 = 3.3 V,
Auto Mode