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MB3882 Datasheet(PDF) 7 Page - fujitsu semiconductor

Part # MB3882
Description  2-channel DC/DC Converter IC with Synchronous Rectifier
PDF  30 Pages
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Manufacturer  FUJITSU [fujitsu semiconductor]
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Logo FUJITSU - fujitsu semiconductor

MB3882 Datasheet(HTML) 7 Page - fujitsu semiconductor

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MB3882
7
s
s
s
s ELECTRICAL CHARACTERISTICS
(VCC
= 12 V, VB = 0 mA, VREF = 0 mA, Ta = +25 °C)
* : Typical setting value
(Continued)
Parameter
Symbol Pin No.
Conditions
Value
Unit
Min.
Typ.
Max.
1.
Reference
Voltage Block
[Ref]
Output voltage
VREF
24
Ta
= +25 °C
2.475
2.500
2.525
V
∆VREF/
VREF
24
Ta
= 0 °C to +85 °C
0.5*
%
Input stability
Line
24
VCC
= 5.5 V to 18 V
110
mV
Load stability
Load
24
VREF
= 0 mA to −1 mA
310
mV
Short output
current
Ios
24
VREF
= 2 V
−28
−14
−7mA
2.
Bias Voltage
Block
[VB]
Output voltage
VB
13
4.95
5.05
5.15
V
3.
Undervoltage
Lockout
Circuit Block
[UVLO]
Threshold
voltage
VTH
23
VCC
=
2.6
2.9
3.2
V
Hysteresis
width
VH
23

0.2*
V
Reset voltage
VRST
23
1.7
2.1
2.5
V
4.
Soft Start
Block
[CS]
Charge
current
ICS
4, 21
−14
−10
−6
µA
5.
Short
Detection
Comparator
Block
[SCP]
Threshold
voltage
VTH
22
0.63
0.68
0.73
V
Input source
current
ICSCP
22
−1.4
−1.0
−0.6
µA
Short
detection time
tSCP
22
CSCP
= 0.01 µF
4.5
6.8
12.2
ms
6.
Triangular
Wave
Oscillator
Block
[OSC]
Oscillator
frequency
fOSC
1RT
= 10 kΩ, CT = 470 pF
170
190
210
kHz
Frequency
temperature
variation rate
∆fOSC/
fOSC
1Ta
= 0 °C to +85 °C
1*
%
7.
Error Amp
Block
[Error Amp.]
Threshold
voltage
VTH1
5, 20
FB
= 1.6 V,
Ta
= +25 °C
1.241
1.2500
1.259
V
VTH2
5, 20
FB
= 1.6 V,
Ta
= 0 °C to +85 °C
1.2375
1.2500
1.2625
V
Input bias
current
IB
5, 20
−INE = 0 V
−200
−20
nA
Voltage gain
AV
6, 19
DC
60
100
dB



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