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ADP1108-3.3 View Datasheet(PDF) - Analog Devices

Part Name
Description
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ADP1108-3.3 Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ADP1108–Typical Performance Characteristics
1.2
1
VIN = 3.0V
0.8
VIN = 2.0V
0.6
VIN = 5.0V
0.4
0.2
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2
SWITCH CURRENT – Amps
Figure 1. Saturation Voltage vs. ISWITCH
Current in Step-Up Mode
1.6
1.4
1.2
1
VCE (SAT)
0.8
0.6
0.4
0.2
0
0.05 0.15 0.25 0.35 0.45 0.55 0.65 0.75
SWITCH CURRENT – Amps
Figure 2. Switch ON Voltage vs.
Switch Current In Step-Down Mode
1100
1000
VIN = 24V WITH L = 500µH @ VOUT = 5V
900
800
700
600
500
400
300 VIN = 12V WITH L = 250µH @ VOUT = 5V
200
100
10
100
1k
RLIM
Figure 4. Maximum Switch Current
vs. RLIM In Step-Down Mode
100
90
80
70
60
VIN = 5V
50
40
30
20
VIN = 2V
10
0
0 100 200 300 400 500 600 700 800 900
SWITCH CURRENT – mA
Figure 5. Supply Current vs. Switch
Current
22
21
20
19
18
17
16
15
14
13
–40
0
25
70
85
TEMPERATURE – °C
Figure 7. Oscillator Frequency vs.
Temperature
67
66
65
64
63
62
61
60
59
58
57
–40
0
25
70
85
TEMPERATURE – °C
Figure 8. Duty Cycle vs. Temperature
1100
1000
900
800
700
2V < VIN < 5V
600
500
400
300
200
100
10
100
1k
RLIM
Figure 3. Maximum Switch Current
vs. RLIM In Step-Up Mode
120
110
100
90
80
70
60
50
40
–40
0
25
70
85
TEMPERATURE – °C
Figure 6. Quiescent Current vs.
Temperature
35
34.5
34
33.5
33
32.5
32
31.5
31
30.5
30
–40
0
25
70
85
TEMPERATURE – °C
Figure 9. Switch ON Time vs.
Temperature
–4–
REV. 0
 

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