ADP1173 Analog Devices, ADP1173 Datasheet - Page 4

• Manufacturer Part Number: ADP1173
• Description: Micropower DC-DC Converter
• Manufacturer: Analog Devices

ADP1173
Figure 5. Maximum Switch Current
vs. R
Figure 8. Oscillator Frequency vs.
Input Voltage
Figure 2. Saturation Voltage vs.
Switch Current in Step-Up Mode
1000
900
800
700
600
500
400
300
200
100
1.2
1.0
0.8
0.6
0.4
0.2
25.5
24.5
23.5
22.5
21.5
0
25
24
23
22
0
100
LIM
3
V
0.2
IN
in Step-Down Mode
V
=12V WITH L = 250µH @ V
IN
5
=24V WITH L = 500µH @ V
OSCILLATOR FREQUENCY
–Typical Performance Characteristics
0.4
SWITCH CURRENT – A
INPUT VOLTAGE – Volts
10
V
R
IN
0.6
LIM
= 2V
15
–
V
IN
0.8
= 3V
20
OUT
V
1.0
OUT
IN
= 5V
25
= 5V
= 5V
1000
1.2
30
Figure 3. Switch ON Voltage vs.
Switch Current in Step-Down Mode
Figure 9. Set Pin Bias Current vs.
Temperature
100
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
90
80
70
60
50
40
30
20
10
80
70
60
50
40
30
20
10
Figure 6. Supply Current vs.
Switch Current
0
0.05
–40
0
100
0.15 0.25 0.35
200 300 400
SWITCH CURRENT – mA
SWITCH CURRENT – A
0
V
TEMPERATURE – C
IN
= 5V
–4–
V
V
CE(SAT)
25
IN
500
0.45 0.55
V
= 2V
IN
600 700 800
= 3V
70
0.65
0.75
900
85
Figure 10. Feedback Pin Bias Current
vs. Temperature
Figure 4. Maximum Switch Current
vs. R
1100
1000
Figure 7. Quiescent Current vs.
Temperature
900
800
700
600
500
400
300
200
100
120
110
100
400
450
350
300
250
200
150
100
90
80
70
60
50
40
50
0
–40
LIM
10
–40
in Step-Up Mode
QUIESCENT CURRENT
0
0
TEMPERATURE – C
TEMPERATURE – C
R
LIM
100
25
25
2V < V
–
V
IN
= 3V
IN
< 5V
70
70
REV. 0
1000
85
85