Fujitsu MB3878 Manual Do Utilizador
MB3878
6
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ELECTRICAL CHARACTERISTICS
(Ta
=
+
25
°
C, VCC
=
19 V, VCC (O)
=
19 V, VREF
=
0 mA)
* : Standard design value.
(Continued)
Parameter
Symbol
Pin
No.
Conditions
Value
Unit
Min
Typ
Max
Reference
voltage block
(Ref)
voltage block
(Ref)
Output voltage
V
REF
6
Ta
=
+
25
°
C
4.995
5.000
5.045
V
Ta
=
−
30
°
C to
+
85
°
C
4.945
5.000
5.055
V
Input stability
Line
6
VCC
=
7 V to 25 V
3
10
mV
Load stability
Load
6
VREF
=
0 mA to
−
1 mA
1
10
mV
Short-circuit
output current
output current
Ios
6
VREF
=
1 V
−
25
−
15
−
5
mA
Under voltage
lockout protection
circuit block
(UVLO)
lockout protection
circuit block
(UVLO)
Threshold voltage
V
TLH
18
VCC
=
VCC (O) ,
VCC
=
6.1
6.4
6.7
V
V
THL
18
VCC
=
VCC (O) ,
VCC
=
5.1
5.4
5.7
V
Hysteresis width
V
H
18
VCC
=
VCC (O)
0.7
1.0
1.3
V
Threshold voltage
V
TLH
6
VREF
=
2.6
2.8
3.0
V
V
THL
6
VREF
=
2.4
2.6
2.8
V
Hysteresis width
V
H
6
V
H
=
V
TLH
−
V
THL
0.05
0.20
0.35
V
Soft-start block
(SOFT)
(SOFT)
Charge current
I
CS
22
−
1.3
−
0.8
−
0.5
µ
A
Triangular
waveform
oscillator circuit
block (OSC)
waveform
oscillator circuit
block (OSC)
Oscillation
frequency
frequency
f
OSC
20
RT
=
47 k
Ω
260
290
320
kHz
Frequency
temperature
stability
temperature
stability
∆
f/fdt
20
Ta
=
−
30
°
C to
+
85
°
C
1*
%
Error amplifier
block
(Error Amp.1,
Error Amp.2)
block
(Error Amp.1,
Error Amp.2)
Input offset
voltage
voltage
V
IO
3, 4,
8, 9
FB1
=
FB2
=
2 V
1
5
mV
Input bias current
I
B
3, 4,
8, 9
−
100
−
30
nA
Common mode
input voltage
range
input voltage
range
V
CM
3, 4,
8, 9
0
V
CC
−
1.8
V
Voltage gain
A
V
5, 7 DC
100*
dB
Frequency
bandwidth
bandwidth
B
W
5, 7 A
V
=
0 dB
2.0*
MHz
Output voltage
V
FBH
5, 7
4.7
4.9
V
V
FBL
5, 7
20
200
mV
Output source
current
current
I
SOURCE
5, 7 FB1
=
FB2
=
2 V
−
2.0
−
0.6
mA
Output sink
current
current
I
SINK
5, 7 FB1
=
FB2
=
2 V
150
300
µ
A