AS1337
Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
7 Typical Operating Characteristics
V
OUT
= 3.3V, C
IN
= 10µF, C
OUT
= 22µF, L1 = 4.7µH, T
AMB
= +25°C (unless otherwise specified).
Figure 3. Efficiency vs. I
OUT
- Down Conversion Mode
100
90
80
70
60
50
40
30
Vin = 3.5V
Vin = 4.0V
Figure 4. Efficiency vs. I
OUT
- Step-up Mode
100
Efficiency (%)
Efficiency (%)
80
70
60
50
40
30
hn
ic a
al m
co s
A
nt G
en
ts
til
0.1
1
10
100
1000
0.1
1
10
100
Output Current (mA)
Output Current (mA)
Figure 5. Efficiency vs. Input Voltage
100
90
80
70
60
50
40
30
Figure 6. Output Current vs. Input Voltage
500
Output Current (mA)
400
Efficiency (%)
300
200
Iout = 1mA
Iout = 10mA
Iout = 30mA
100
Iout = 100mA
Iout = 200mA
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0.5
1
1.5
2
2.5
Input Voltage (V)
Input Voltage (V)
Figure 7. Min. Operating Voltage vs. Temperature
0.85
Figure 8. Switching Frequency vs. Temperature
1.5
1.4
1.3
1.2
1.1
1
0.9
-45 -30 -15
Minimum Operating Voltage (V)
0.75
0.65
0.55
0.45
0.35
-45 -30 -15
Switching Frequency (MHz)
Te
c
0
15
30
45
60
75
90
0
15
Temperature (°C)
Revision 1.05
Temperature (°C)
5 - 15
lv
Vin = 1.5V
Vin = 2.0V
Vin = 3.0V
3
3.5
30
45
60
al
1000
4
4.5
75
90
id
90
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