Datasheet

Data Sheet ADP5034
Rev. E | Page 11 of 28
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
1
EFFICIENCY (%)
I
OUT
(A)
+25°C
+85°C
–40°C
09703-028
Figure 16. BUCK1 Efficiency vs. Load Current, Across Temperature,
V
IN
= 3.9 V, V
OUT1
= 3.3 V, Auto Mode
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
1
EFFICIENCY (%)
I
OUT
(A)
09703-030
+85°C
+25°C
–40°C
Figure 17. BUCK2 Efficiency vs. Load Current, Across Temperature,
V
OUT2
= 1.8 V, Auto Mode
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1
EFFICIENCY (%)
I
OUT
(A)
+85°C
+25°C
09703-029
–40°C
Figure 18. BUCK1 Efficiency vs. Load Current, Across Temperature,
V
OUT1
= 0.8 V, Auto Mode
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
0 0.2 0.4 0.6 0.8 1.0 1.2
SCOPE FREQUENCY (MHz)
I
OUT
(A)
09703-031
+85°C
+25°C
–40°C
Figure 19. 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
09703-051
Figure 20. 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
09703-050
Figure 21. Typical Waveforms, V
OUT2
= 1.8 V, I
OUT2
= 30 mA, Auto Mode