Datasheet

ADP5033 Data Sheet
Rev. F | Page 10 of 28
100
90
80
70
60
50
40
30
20
10
0
0.001 0.01 0.1 1
I
OUT
(A)
EFFICIENCY (%)
+25°C
+85°C
–40°C
09788-062
Figure 15. BUCK1 Efficiency vs. Load Current, Across Temperature,
V
IN1
= 3.9 V, V
OUT1
= 3.3 V, Auto Mode
100
90
80
70
60
50
40
30
20
10
0
0.001
0.01 0.1 1
I
OUT
(A)
EFFICIENCY (%)
+25°C
+85°C
–40°C
09788-063
Figure 16. BUCK2 Efficiency vs. Load Current, Across Temperature,
V
OUT2
= 1.8 V, Auto Mode
100
90
80
70
60
50
40
30
20
10
0
0.001 0.01 0.1 1
I
OUT
(A)
EFFICIENCY (%)
+25°C
+85°C
–40°C
09788-200
Figure 17. BUCK1 Efficiency vs. Load Current, Across Temperature,
V
OUT1
= 0.8 V, Auto Mode
3.3
3.2
3.1
3.0
2.9
2.8
2.7
2.6
2.5
0 1.21.00.80.60.40.2
I
OUT
(A)
FREQUENCY (MHz)
T
A
= +25°C
T
A
= –40°C
T
A
= +85°C
09788-040
Figure 18. BUCK2 Switching Frequency vs. Output Current, Across
Temperature, V
OUT2
= 1.8 V, PWM Mode
2
4
T
1
CH1 50.0mV M 4.00µs A CH2 240mA
T 28.40%
CH2 500mA Ω
CH4 2.00V
I
SW
VOUT
SW
09788-251
Figure 19. Typical Waveforms, V
OUT1
= 3.3 V, I
OUT1
= 30 mA, Auto Mode
2
4
T
1
CH1 50.0mV M 4.00µs A CH2 220mA
T 28.40%
B
W
CH2 500mA Ω
CH4 2.00V
B
W
I
SW
VOUT
SW
09788-250
Figure 20. Typical Waveforms, V
OUT2
= 1.8 V, I
OUT2
= 30 mA, Auto Mode