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參數(shù)資料
| 型號： | MC34280FTBR2 |
| 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(shù)： | 7/20頁 |
| 文件大?。?/td> | 380K |
| 代理商： | MC34280FTBR2 |
MC34280
http://onsemi.com
7
DYNAMIC ELECTRICAL CHARACTERISTICS
(Refer to TIMING DIAGRAMS, TA = 0 to 70
°
C unless otherwise noted.)
Rating
Symbol
Min
Typ
Max
Unit
Minimum PORB to Control delay
tPORC
tCW
tCC
tCL
tJW
tJC
tJL
tRJL
tRW
tDL
tDW
500
nS
Minimum VAUXCON pulse HIGH width
5.0
μ
S
Minimum VAUXCON pulse LOW width
8.0
μ
S
Minimum VAUXADJ to VAUXCON delay
1.0
μ
S
Minimum VAUXADJ pulse HIGH width
1.0
μ
S
Minimum VAUXADJ pulse LOW width
Minimum VAUXCON LOW to VAUXADJ pulse delay1
1.0
μ
S
1.0
μ
S
Minimum hold time of VAUXADJ for Reset VAUXREF
500
nS
Minimum VAUXADJ pulse HIGH width for Reset VAUXREF
1.0
μ
S
Minimum hold time of VAUXADJ for Decrement VAUXREF
500
nS
Minimum VAUXADJ pulse HIGH width for Decrement VAUXREF
1.0
μ
S
NOTE:
1. For not resetting VAUXREF.
TYPICAL ELECTRICAL CHARACTERISTICS
1
80%
1
90%
1
80%
0
90%
VIN, INPUT VOLTAGE (V)
VIN, INPUT VOLTAGE (V)
EV
IOUT_AUX, AUX OUTPUT CURRENT (mA)
EV
Figure 6. Efficiency of VMAIN versus Output
Current (VMAIN = 3.3 V, L = 33 uH, Various VIN)
IOUT_MAIN, MAIN OUTPUT CURRENT (mA)
Figure 7. Efficiency of VMAIN versus Input
Voltage (VMAIN = 3.3 V, L1 = 33 uH, Various IOUT)
Figure 8. Efficiency of VAUX versus Output
Current (VAUX = 25 V, L2 = 33 uH, Various VIN)
Figure 9. Efficiency of VAUX versus Input
Voltage (VAUX = 25 V, L2 = 33 uH, Various IOUT)
85%
80%
75%
70%
50
100
150
200
250
300
EV
85%
80%
75%
70%
1.5
2
3
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
2.5
9
Vin = 3V
Vin = 1.8V
Vin = 1.5V
Vin = 1V
Iout = 10mA
Iout = 60mA
Iout = 100mA
Iout = 150mA
Iout = 200mA
X
X
X
X
Iout = 1mA
Iout = 5mA
Iout = 10mA
Iout = 15mA
Vin = 3V
Vin = 1.8V
Vin = 1.5V
Vin = 1V
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