KA3843AC Fairchild Semiconductor, KA3843AC Datasheet - Page 2

• Manufacturer Part Number: KA3843AC
• Description: SMPS Controller
• Manufacturer: Fairchild Semiconductor

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KA3843AC
Absolute Maximum Ratings
Electrical Characteristics
(V
Notes:
1. These parameters, although guaranteed, are not 100% tested in production.
2. Parameter measured at trip point of latch with V
3. Gain defined as:
2
Parameter
Supply voltage
Output current
Analog inputs (pin2, 3)
Error amp. output sink current
Power dissipation
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
CC
= 15V, R
T
= 10KW, C
G
V
=
------------------------ - O
V
V
T
SENSE
COMP
= 3.3nF, T
;
I
Symbol
V
DISCHG
R
V
PSRR
V
V
F
R
I
A
I(MAX)
ST
SENSE
LOAD
BIAS
I
OSC
G
OSC
T
REF
Line
SC
= 0 C to +70 C ,Unless otherwise specified)
D
V
V
FB
0.8V
I
T
V
I
T
T
V
V
T
(Note2, 3)
V
V
V
V
Symbol
SINK(EA)
= 0V.
O
V
J
CC
a
J
CC
PIN4
J
PIN1
CC
SENSE
PIN3
V
I(ANA)
= 1mA to 20mA
= 25 C, I
= 25 C
= 25 C
P
= 25 C
I
CC
O
D
= 12V to 25V
= 12V to 25V
= 12V to 25V (Note1, 2)
, peak to peak
= 5V(Note2)
= 0 V to 2V (Note1)
=0V
O
Conditions
= 1mA
-0.3 to 6.3
Value
30
+1
10
1
Min.
2.85
4.9
7.8
0.9
47
-
-
-
-
-
-
-
-
Typ.
-100
100
5.0
0.2
1.7
8.3
1.0
52
70
-2
6
6
3
Unit
mA
W
V
A
V
Max.
-180
3.15
200
5.1
1.1
-10
8.8
20
25
57
1
-
-
Unit
kHz
V/V
mV
mV
mA
mA
dB
uA
ns
%
V
V
V