MB3889 Fujitsu Microelectronics, Inc., MB3889 Datasheet - Page 11

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MB3889

Manufacturer Part Number
MB3889
Description
2-channel Dc/dc Converter Ic With Overcurrent Protection Symmetrical-phase Type
Manufacturer
Fujitsu Microelectronics, Inc.
Datasheet

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TYPICAL CHARACTERISTICS
500
400
300
200
100
5
4
3
2
1
0
Power Supply Current vs. Power Supply Voltage
20
18
16
14
12
10
8
6
4
2
0
0
0
CTL Terminal Current, Reference Voltage
0
0
Reference Voltage vs. Load Current
CTL terminal voltage V
Power supply voltage V
5
vs. CTL Terminal Voltage
Load current I
5
5
10
V
REF
10
10
REF
I
CTL
15
(mA)
CTL
CC
Ta
VCC
VREF
15
(V)
15
(V)
Ta
VCC
CTL
20
Ta
CTL
25 C
12 V
0 mA
25 C
5 V
25 C
12 V
5 V
20
25
20
5
4
3
2
1
0
2.0
1.5
1.0
0.5
0.0
0.5
1.0
1.5
2.0
1000
Reference Voltage vs. Ambient Temperature
6
5
4
3
2
1
0
100
Reference Voltage vs. Power Supply Voltage
40
10
0
10
Triangular Wave Oscillation Frequency
20
Ambient temperature Ta ( C)
Power supply voltage V
Timing resistor R
5
0
vs. Timing Resistor
20
10
100
40
T
( )
MB3889
60
CC
VCC
CTL
VREF
Ta
CTL
VREF
15
(V)
Ta
VCC
CTL
(Continued)
80
5 V
25 C
12 V
5 V
+25 C
0 mA
0 mA
5 V
12 V
1000
100
20
11

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