參數(shù)資料
型號： KA3843AC
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, PDIP8
封裝： DIP-8
文件頁數(shù)： 2/6頁
文件大小： 47K
代理商： KA3843AC
KA3843AC
2
Absolute Maximum Ratings
Electrical Characteristics
(V
CC
= 15V, R
T
= 10KW, C
T
= 3.3nF, T
A
= 0
°
C to +70
°
C ,Unless otherwise specified)
Notes:
1. These parameters, although guaranteed, are not 100% tested in production.
2. Parameter measured at trip point of latch with V
FB
= 0V.
3. Gain defined as:
Parameter
Supply voltage
Output current
Analog inputs (pin2, 3)
Error amp. output sink current
Power dissipation
Symbol
V
CC
I
O
V
I(ANA)
I
SINK(EA)
P
D
Value
30
+1
-0.3 to 6.3
10
1
Unit
V
A
V
mA
W
Parameter
REFERENCE SECTION
Output voltage
Line regulation
Load regulation
Output short circuit
OSILLATOR SECTION
Initial accuracy
Voltage stability
Amplitude
Discharge current
CURRENT SENSE SECTION
Gain
Maximum input signal
PSRR
Input bias current
Delay to output
Symbol
Conditions
Min.
Typ.
Max.
Unit
V
REF
R
Line
R
LOAD
I
SC
T
J
= 25
°
C, I
O
= 1mA
V
CC
= 12V to 25V
I
O
= 1mA to 20mA
T
a
= 25
°
C
4.9
-
-
-
5.0
6
6
-100
5.1
20
25
-180
V
mV
mV
mA
F
OSC
ST
V
V
OSC
I
DISCHG
T
J
= 25
°
C
V
CC
= 12V to 25V
V
PIN4
, peak to peak
T
J
= 25
°
C
47
-
-
7.8
52
0.2
1.7
8.3
57
1
-
8.8
kHz
%
V
mA
G
V
(Note2, 3)
V
PIN1
= 5V(Note2)
V
CC
= 12V to 25V (Note1, 2)
V
SENSE
=0V
V
PIN3
= 0 V to 2V (Note1)
2.85
0.9
-
-
-
3
3.15
1.1
-
-10
200
V/V
V
dB
uA
ns
V
I(MAX)
PSRR
I
BIAS
T
D
1.0
70
-2
100
G
V
V
V
SENSE
------------------------
O
V
SENSE
0.8V
≤
≤
;
=
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