MB3885 Fujitsu Microelectronics, Inc., MB3885 Datasheet - Page 7

• Manufacturer Part Number: MB3885
• Description: 1-channel Dc/dc Converter Ic With Synchronous Rectifier
• Manufacturer: Fujitsu Microelectronics, Inc.

* : Standard design value
1.
Reference
Voltage Block
[Ref]
2.
Bias Voltage
Block
[VB]
3.
Undervoltage
Lockout
Circuit Block
[UVLO]
4.
Soft-start
Block
[CS]
5.
Short
Detection
Comparator
Block
[SCP]
6.
Triangular
Wave
Oscillator
Block
[OSC]
Error Amp
Block
[Error Amp.]
7.
ELECTRICAL CHARACTERISTICS
Parameter
Output voltage
Input stability
Load stability
Short output
current
Output voltage
Threshold
voltage
Hysteresis
width
Reset voltage
Charge
current
Threshold
voltage
Input source
current
Short
detection time
Oscillator
frequency
Frequency
temperature
variation rate
Threshold
voltage
Input bias
current
Voltage gain
Symbol Pin No.
Load
I
V
V
Line
V
V
V
f
f
V
V
V
t
Ios
VB
CSCP
f
V
I
A
SCP
OSC
OSC
OSC
I
REF
REF
RST
CS
TH1
TH2
REF
TH
TH
B
H
V
/
/
18
18
18
18
18
11
10
10
10
6
3
3
3
4
4
8
8
8
7
Ta
Ta
VCC
VREF
VREF
VCC
CSCP
RT 10 k , CT 470 pF
Ta
FB
Ta
FB
Ta
DC
INE
0 C to 85 C
0 C to 85 C
0 C to 85 C
1.6 V,
1.6 V,
Conditions
25 C
25 C
(VCC
5.5 V to 18 V
0 V
0 mA to 1 mA
2 V
0.01 F
12 V, VB
1.2375
0 mA, VREF
2.475
1.241
4.95
0.63
Min
170
2.6
1.7
4.5
200
60
1.4
28
14
1.2500
1.2500
Value
2.500
5.05
0.68
Typ
0.5*
0.2*
190
100
2.9
2.1
6.8
1*
1.0
1
3
14
10
20
0 mA, Ta
MB3885
1.2625
2.525
1.259
Max
5.15
0.73
12.2
210
3.2
2.5
10
10
0.6
7
6
(Continued)
25 C)
Unit
kHz
mV
mV
mA
ms
nA
dB
V
V
V
V
V
V
V
V
A
A
7