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