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參數資料
| 型號： | MC34280FTB |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | Power Supply & Management IC for Handheld Electronic Products |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP32 |
| 封裝： | LQFP-32 |
| 文件頁數： | 8/20頁 |
| 文件大小： | 380K |
| 代理商： | MC34280FTB |
MC34280
http://onsemi.com
8
TYPICAL ELECTRICAL CHARACTERISTICS (Cont’d)
1
80%
1
80%
VIN, INPUT VOLTAGE (V)
EV
IOUT_AUX, AUX OUTPUT CURRENT (mA)
Figure 10. Efficiency of VAUX versus Output
Current (VAUX = 20 V, L2 = 33 uH, Various VIN)
Figure 11. Efficiency of VAUX versus Input
Voltage (VAUX = 20 V, L2 = 33 uH, Various IOUT)
75%
70%
65%
60%
55%
50%
3
5
7
11
13
15
75%
70%
65%
60%
55%
50%
1.5
2
2.5
3
EV
1
85%
1
65%
VIN, INPUT VOLTAGE (V)
EV
Figure 12. Efficiency of VAUX versus Output
Current (VAUX = 5 V, L2 = 82 uH, Various VIN)
IOUT_AUX, AUX OUTPUT CURRENT (mA)
Figure 13. Efficiency of VAUX versus Input
Voltage (VAUX = 5 V, L2 = 82 uH, Various IOUT)
85%
50%
45%
40%
5
10
15
30
35
75%
80%
50%
2
2.5
3
20
25
60%
55%
70%
80%
75%
70%
65%
1.5
EV
9
Vin = 3V
Vin = 1.8V
Vin = 1.5V
Vin = 1V
Iout = 1mA
Iout = 5mA
Iout = 10mA
Iout = 15mA
Vin = 3V
Vin = 2.4V
Vin = 1.8V
Vin = 1.5V
Vin = 1V
Iout = 1V
Iout = 5V
Iout = 10V
Iout = 15V
Iout = 25V
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