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
0.1
1
10
100
1000
Vin = 3.5V
Vin = 4.0V
Figure 4. Efficiency vs. I
OUT
- Step-up Mode
100
90
80
70
60
50
Vin = 1.5V
Efficiency (%)
Efficiency (%)
40
30
0.1
1
10
100
Vin = 2.0V
Vin = 3.0V
1000
Output Current (mA)
Figure 5. Efficiency vs. Input Voltage
100
90
80
70
60
50
40
30
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
Iout = 1mA
Iout = 10mA
Iout = 30mA
Iout = 100mA
Iout = 200mA
Output Current (mA)
Figure 6. Output Current vs. Input Voltage
500
Output Current (mA)
400
Efficiency (%)
300
200
100
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Input Voltage (V)
Figure 7. Min. Operating Voltage vs. Temperature
0.85
Input Voltage (V)
Figure 8. Switching Frequency vs. Temperature
1.5
Minimum Operating Voltage (V)
Switching Frequency (MHz)
0
15
30
45
60
75
90
0.75
1.4
1.3
1.2
1.1
1
0.9
-45 -30 -15
0.65
0.55
0.45
0.35
-45 -30 -15
0
15
30
45
60
75
90
Temperature (°C)
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Temperature (°C)
5 - 14
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