ADP1109A Analog Devices, ADP1109A Datasheet - Page 5

• Manufacturer Part Number: ADP1109A
• Description: Micropower Low Cost Fixed 3.3 V/ 5 V/ 12 V and Adjustable DC-to-DC Converter
• Manufacturer: Analog Devices

Figure 6. Oscillator Frequency vs.
Temperature
Figure 9. Switch Saturation Voltage
vs. Temperature
REV. 0
Figure 12. 12 V Output Voltage vs.
Temperature
12.20
12.15
12.10
12.05
12.00
11.95
11.90
11.85
11.80
11.75
11.70
170
150
130
110
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
90
70
50
–40
–40
–40
V
CE(SAT)
0
0
TEMPERATURE – C
0
TEMPERATURE – C
@ V
TEMPERATURE – C
IN
= 3V AND I
25
25
25
SW
70
70
= 0.65A
70
85
85
85
Figure 7. Duty Cycle vs. Temperature
Figure 10. Switch-On Time vs.
Temperature
Figure 13. Quiescent Current vs.
Input Voltage
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
600
500
400
300
200
68
65
62
59
56
53
–40
–40
2
4
6
0
0
INPUT VOLTAGE – Volts
TEMPERATURE – C
TEMPERATURE – C
8
–5–
10
25
25
12
14
70
70
16
18
85
85
20
Figure 11. Quiescent Current vs.
Temperature
Figure 8. Saturation Voltage vs.
I
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
600
550
500
450
400
350
300
250
SWITCH
0.1
–40
0.2
Current in Step-Up Mode
I
0
V
SWITCH
TEMPERATURE – C
IN
0.4
= 3V
V
V
IN
IN
CURRENT – A
ADP1109A
0.6
= 2V
= 5V
25
0.8
70
1
1.2
85