Datasheet

I
SWITCH
CURRENT – A
1.4
0
0.1 0.2 0.4 0.6 0.8 1.0 1.2
1.2
0.6
0.4
0.2
1.0
0.8
V
IN
= 2V
V
IN
= 3V
V
IN
= 5V
SATURATION VOLTAGE – V
Figure 2. Saturation Voltage vs. I
SWITCH
Current in
Step-Up Mode
I
SWITCH
CURRENT – A
2.0
0
0.1 0.2 0.4 0.6 0.8 0.9
1.8
0.6
0.4
0.2
1.6
1.4
V
IN
= 12V
ON VOLTAGE – V
1.2
1.0
0.8
Figure 3. Switch ON Voltage vs. I
SWITCH
Current In
Step-Down Mode
INPUT VOLTAGE – V
1.5 303 6 9 12 15 18 21 24 27
0
1400
1200
1000
800
600
400
200
QUIESCENT CURRENT
QUIESCENT CURRENT – μA
Figure 4. Quiescent Current vs. Input Voltage
ADP1111–Typical Characteristics
–4–
REV. 0
76
71
67
2304 6 8 1012151821 2427
75
72
70
69
74
73
INPUT VOLTAGE – V
OSCILLATOR FREQUENCY – kHz
OSCILLATOR FREQUENCY
68
Figure 5. Oscillator Frequency vs. Input Voltage
R
LIM
– Ω
1.9
1.7
0.1
1 100010 100
1.5
1.3
0.5
1.1
0.9
0.7
0.3
SWITCH CURRENT – A
STEP-DOWN WITH
V
IN
= 12V
STEP-UP WITH
2V < V
IN
< 5V
Figure 6. Maximum Switch Current vs. R
LIM
OSCILLATOR FREQUENCY – kHz
TEMPERATURE – ⴗC
80
70
60
–40 8525
64
62
68
66
OSCILLATOR FREQUENCY
70
0
78
72
76
74
Figure 7. Oscillator Frequency vs. Temperature
REV. A