FUJITSU MB3887 - Manual (Page 8)

MB3887
8
■ ELECTRICAL CHARACTERISTICS
(Ta
= +
25
°
C, VCC
=
19 V, VCC (O)
=
19 V, VREF
=
0 mA)
* : Standard design value.
(Continued)
Parameter
Sym-
bol
Pin
No.
Conditions
Value
Unit
Min Typ Max
1.
Reference
voltage block
[REF]
Output voltage
V
REF1
6 Ta
= +
25
°
C 4.967 5.000 5.041 V
V
REF2
6 Ta
= −
10
°
C to
+
85
°
C 4.95 5.00 5.05 V
Input stability Line 6 VCC
=
8 V to 25 V

3 10 mV
Load stability Load 6 VREF
=
0 mA to
−
1 mA

1 10 mV
Short-circuit output
current
Ios 6 VREF
=
1 V
−
50
−
25
−
12 mA
2.
Under voltage
lockout protec-
tion circuit
block
[UVLO]
Threshold voltage
V
TLH
18
VCC
=
VCC (O) ,
VCC
=
6.2 6.4 6.6 V
V
THL
18
VCC
=
VCC (O) ,
VCC
=
5.2 5.4 5.6 V
Hysteresis width V
H
18 VCC
=
VCC (O)

1.0*

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
 
0.2

V
3.
Soft-start block
[SOFT]
Charge current I
CS
22
 −
14
−
10
−
6
µ
A
4.
Triangular
waveform os-
cillator circuit
block
[OSC] Oscillation
frequency
f
OSC
20 RT
=
47 k
Ω
260 290 320 kHz
Frequency
temperature
stability
∆
f/fdt 20 Ta
= −
30
°
C to
+
85
°
C

1*
 %
5-1.
Error amplifier
block
[Error Amp1,
Error Amp2]
Input offset 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
In-phase 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
BW 5, 7 AV
=
0 dB

2*

MHz
Output voltage
V
FBH
5, 7

4.7 4.9

V
V
FBL
5, 7
 
20 200 mV
Output source
current
I
SOURCE
5, 7 FB1
=
FB2
=
2 V
 −
2
−
1 mA
Output sink current I
SINK
5, 7 FB1
=
FB2
=
2 V 150 300
 µ
A