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MC34280FTBR2 Arkusz danych(PDF) 7 Page - ON Semiconductor

Numer części MC34280FTBR2
Szczegółowy opis  Power Supply & Management IC for Handheld Electronic Products
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Producent  ONSEMI [ON Semiconductor]
Strona internetowa  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

MC34280FTBR2 Arkusz danych(HTML) 7 Page - ON Semiconductor

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MC34280
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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
500
nS
Minimum VAUXCON pulse HIGH width
tCW
5.0
µS
Minimum VAUXCON pulse LOW width
tCC
8.0
µS
Minimum VAUXADJ to VAUXCON delay
tCL
1.0
µS
Minimum VAUXADJ pulse HIGH width
tJW
1.0
µS
Minimum VAUXADJ pulse LOW width
tJC
1.0
µS
Minimum VAUXCON LOW to VAUXADJ pulse delay1
tJL
1.0
µS
Minimum hold time of VAUXADJ for Reset VAUXREF
tRJL
500
nS
Minimum VAUXADJ pulse HIGH width for Reset VAUXREF
tRW
1.0
µS
Minimum hold time of VAUXADJ for Decrement VAUXREF
tDL
500
nS
Minimum VAUXADJ pulse HIGH width for Decrement VAUXREF
tDW
1.0
µS
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)
IOUT_AUX, AUX OUTPUT CURRENT (mA)
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
85%
80%
75%
70%
1.5
2
3
75%
70%
65%
60%
55%
50%
35
7
11
13
15
75%
70%
65%
60%
55%
50%
1.5
2
2.5
3
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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