SP6642EU 查看數據表（PDF） - Signal Processing Technologies
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SP6642EU Datasheet PDF : 16 Pages
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PERFORMANCE CHARACTERISTICS (continued)
Refer to the circuit in Figure 25 with VBATT = 1.2V, R1 + R2 = 1MΩ, and TAMB = +25OC unless otherwise noted.
100
90
80
70
60
50
40
30
20
10
0
0.01
Vin = 1.6V
Vin = 1.2V
Vin = 1.0V
Vin = 0.85V
0.1
1
10
100
Output Current (mA)
100
90
80
70
60
50
40
30
20
10
0
0.01
Vin = 1.6V
Vin = 1.2V
Vin = 1.0V
Vin = 0.85V
0.1
1
10
100
Output Current (mA)
Figure 5. Efficiency vs. Output Current (VOUT=5.0V)
where L1=100µH, Sumida CD54-101
Figure 6. Efficiency vs. Output Current (VOUT=5.0V)
where L1=150µH, TDK NLC565050T-151K
10000
1000
Vout = 5.0V
Vout = 3.3V
Vout = 2.4V
100
10
0.8 1.0 1.2 1.4 1.6 1.8
Input Voltage (V)
100
80
60
40
20
0
-40 -20
0 20 40 60 80 100
Temperature (oC)
Figure 7. No-Load Battery Current vs. Input voltage
Figure 8. No-Load Battery Current vs. Temperature
Where VBATT = 1.2V, VOUT = 3.3V
Rev. 10-6-00
SP6642/6643 High Efficiency Step-Up DC-DC Converter
5
© Copyright 2000 Sipex Corporation
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