參數(shù)資料
型號(hào): FAN7556MX
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: SMPS Controller
中文描述: 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8
封裝: SOP-8
文件頁數(shù): 4/10頁
文件大?。?/td> 243K
代理商: FAN7556MX
FAN7556
4
Electrical Characteristics
(Ta = 25
°
C, Vcc=18V, Ct=1nF unless otherwise specified)
Note:
1. These parameters, although guaranteed, are not 100% tested in production.
Parameter
< OSCILLATOR SECTION >
Oscillator Frequency
Frequency Change With Vcc
Temperature Stability (Note1)
< PWM SECTION >
FB Source Current
FB Threshold Voltage 1
FB Threshold Voltage 2
Maximum Duty Cycle
< SOFT START SECTION >
Soft Start Current
Soft Start Limit Voltage
< PROTECTION SECTION >
Shutdown Feedback Voltage
Shutdown Delay Current
Over Current Protection
Over Voltage Protection
Comparator Threshold Voltage
<UVLO SECTION>
Start Threshold Voltage
Min. Operating Voltage
< ON/OFF CONTROL SECTION >
On Threshold Voltage
Off Threshold Voltage
Sink Current
<OUTPUT SECTION>
Low Output Voltage1
Low Output Voltage2
High Output Voltage1
High Output Voltage2
Rise Time (Note1)
Fall Time (Note1)
< OVERALL SECTION >
Start-Up Current
Operating Supply Current
Off State Current
Symbol
Conditions
Min.
Typ.
Max.
Unit
F
OSC
F
OSC1
F
OSC2
T
j
=25
°
C, Ct=1nF
Vcc=10V~30V
-25
°
C
Ta
125
°
C
90
-
-
100
±1
±5
110
-
-
kHz
%
%
I
FB
V
FB
= 0V, V
S/S
= 5V
Duty = 0%
Duty = D
MAX
-
-
-
1.0
0.85
2.7
74
-
-
-
mA
V
V
%
V
TH(FBO)
V
TH(FBM)
D
MAX
-
70
78
I
S/S
V
FB
= 5V, V
S/S
= 0V
-
-
1.1
5.2
-
-
mA
V
V
LIM(S/S)
-
V
SD
I
SD
V
OC
V
OVP
V
LA
V
FB
> 5V
4V
V
FB
V
SD
5.4
3.5
0.22
30
1.7
6
5
6.6
6.5
0.29
38
2.3
V
uA
V
V
V
-
0.26
34
2
V
FB
= 3V, V
S/S
= 5V
-
V
TH(ST)
V
OPR(MIN)
-
-
13.2
8.2
14.7
9.2
16.2
10.2
V
V
V
ON
V
OFF
I
SINK
V
IS
= 0V
V
FB
< V
ON
V
FB
< V
TH(FB)
, V
S/S
= 5V
0.2
1.2
3
0.3
1.5
4
0.4
1.8
5
V
V
mA
V
OL1
V
OL2
V
OH1
V
OH2
T
R
T
F
Io = 50mA
Io = 200mA
Io = -50mA
I
O
= -200mA
C
L
= 1nF, (No load)
C
L
=
1nF, (No load)
-
-
0.15
1.5
15
14
80
40
0.4
2.5
17
16
-
-
V
V
V
V
ns
ns
13
12
-
-
V
ST
I
OP
I
OFF
-
-
-
-
0.1
7
0.2
0.2
10
0.4
mA
mA
mA
Vcc
30V
V
FB
< V
TH(FB)
, V
S/S
< V
OFF
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