MB3885PFV FUJITSU [Fujitsu Component Limited.], MB3885PFV Datasheet - Page 8

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MB3885PFV

Manufacturer Part Number
MB3885PFV
Description
1-channel DC/DC Converter IC with Synchronous Rectifier
Manufacturer
FUJITSU [Fujitsu Component Limited.]
Datasheet
8
MB3885
* : Standard design value
Error Amp
Block
[Error Amp.]
8.
PWM
Comparator
Block
[PWM Comp.1,
PWM Comp.2]
9.
Dead time
Adjustment
Block
[DTC]
10. Output
Block
[Drive]
7.
Parameter
Frequency
band width
Output voltage
Output source
current
Output sink
current
Threshold
voltage
Maximum
duty cycle
Output current
Output voltage
Output current
rectifier side)
Output voltage
rectifier side)
Diode voltage
(main side)
(main side)
(synchronous
(synchronous
Symbol Pin No.
I
I
I
SOURCE1
SOURCE2
SOURCE
I
I
V
V
V
V
V
I
BW
V
V
SINK1
SINK2
V
Dtr
SINK
V
OH1
OH2
FBL
OL1
OL2
FBH
TH
TL
D
13
13
13
13
13
15
15
15
15
12
7
7
7
7
7
7
7
AV
FB
FB
Duty cycle
Duty cycle
RT
CT
Duty
Duty
OUT1
CB
OUT1
CB
Duty
Duty
OUT2
OUT2
VB
(t
(t
(t
(t
1 f
1 f
1 f
1 f
1.6 V
1.6 V
0 dB
10 k ,
470 pF
10 mA
17 V, VS
17 V, VS
(VCC
Conditions
5
5
5
5
OSC
OSC
OSC
OSC
100 mA,
100 mA
100 mA,
100 mA
0
Dtr
Duty)
Duty)
Duty)
Duty)
12 V, VB
12 V
12 V
0 mA, VREF
CB
Min.
2.2
1.5
1.2
2.5
2.5
85
Value
CB
VS
800*
900*
900*
Typ.
1.81
700*
750*
2.5
0.8
9.0
1.3
0.9
0.9
4.1
1.0
0.9
100
90
0 mA, Ta
Max.
VS
1.0
2.0
1.4
1.4
1.1
95
45
(Continued)
25 C)
Unit
kHz
mA
mA
mA
mA
mA
V
V
V
V
V
V
V
V
V
A

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