KA3843 ESTEK [Estek Electronics Co. Ltd], KA3843 Datasheet - Page 2

• Manufacturer Part Number: KA3843
• Description: fixed frequency current mode PWM controller
• Manufacturer: ESTEK [Estek Electronics Co. Ltd]

Electrical characteristics
(*V
* - Adjust V
Note 1: Parameter measured at trip point of latch with V
Note 2: Gain defined as A=∆V
Note 3: These parameters, although guaranteed, are not 100% tested in production.
Reference Section
Reference Output Voltage
Zener Voltage
Line Regulation
Load Regulation
Short Circuit Output Current
Oscillator Section
Oscillation Frequency
Frequency Change with Voltage
Oscillator Amplitude
Error Amplifier Section
Input Bias Current
Input Voltage
Open Loop Voltage Gain
Power Supply Rejection Ratio
Output Sink Current
Output Source Current
High Output Voltage
Low Output Voltage
Current Sense Section
Gain
Maximum Input Signal
Supply Voltage Rejection
Input Bias Current
Output Section
Low Output Voltage
High Output Voltage
Rise Time
Fall Time
Undervoltage Lockout Section
Start Theshold
Min. Operating Voltage
(After Turn On)
PWM Section
Max. Duty Cycle
Min. Duty Cycle
Total Standby Current
Start−Up Current
Operating Supply Current
CC
=15V, R
Characteristics
CC
above the start threshold before setting it to 15V.
T
=10kΩ, C
T
=3.3nF, T
pin1
/∆V
pin3
A
Symbol
V
; 0 ≤ V
∆f/∆V
I
I
PSRR
V
=0
∆V
∆V
V
SOURCE
V
D
D
CC (OPR)
V
A
SVR
OPR(min)
V
I
I
I
V
V
V
V
TH(ST)
I
(OSC)
BIAS
SINK
G
I(MAX)
BIAS
(MAX)
(MAX)
V
I(E.A)
I
SC
t
t
REF
VOL
ST
f
OH
OL
OL
OH
R
F
0
REF
REF
Z
V
C to +70
CC
pin3
≤ 0.8V.
T
T
I
12V ≤ V
1 mA ≤ I
T
12V ≤ V
(peak to peak)
V
V
2V ≤ V
12V ≤ V
V
V
V
V
(Note 1 & 2)
V
12V ≤ V
V
I
I
I
I
T
T
MIK3842A(AM)/44A(AM)
MIK3843A(AM)/45A(AM)
MIK3842A(AM)/44A(AM)
MIK3843A(AM)/45A(AM)
MIK3842A(AM)/43A(AM)
MIK3844A(AM)/45A(AM)
MIK384XA(AM)
V
CC
SINK
SINK
SINK
SINK
J
J
A
J
J
FB
pin1
pin2
pin2
pin2
pin2
pin3
pin3
0
pin1
=25 mA
= 25° C, I
= 25° C
= 25° C, C
= 25° C, C
C, unless otherwise specified)
= 25° C
=3V
pin2
= 20 mA
= 200 mA
= 20 mA
= 200 mA
= 2.5V
= 2.7V, V
= 2.3V, V
= 2.3V, R
= 2.7V, R
= 3V
= V
= 5V (Note1)
=0.
pin2
0
CC
CC
CC
CC
REF
≤ 4V
REF
= 0V
Test Conditions
L
L
≤ 25 V
≤ 25 V
≤ 25 V
≤ 25 V (Note 1)
pin1
pin1
= 1nF (Note 3)
= 1nF (Note 3)
L
L
≤ 20mA
= 1 mA
= 15KΩ to GND
= 15KΩ to PIN 8
= 1.1V
= 5V
2
MIK384XA
MIK384XAM
14.5
Min
2.42
-0.5
2.85
4.9
5.0
0.9
7.8
8.5
7.0
47
47
30
65
60
13
12
95
47
2
BEIJING ESTEK ELECTRONICS CO.,LTD
-100
0.05
0.17
Typ
0.08
13.5
13.0
16.0
-0.1
-1.0
-3.0
5.0
6.0
6.0
1.6
2.5
6.0
0.8
3.0
1.0
1.4
8.4
7.6
90
70
70
45
35
13
10
97
48
38
50
52
7
-180
17.5
11.5
Max
2.58
3.15
100
5.1
150
150
1.0
1.1
1.1
-10
0.4
2.2
9.0
8.2
0.3
57
57
20
25
50
17
-2
0
Units
KHz
V/V
mA
mA
mA
mV
mA
µA
dB
µA
dB
nS
%
V
V
V
%
V
V
V
V
V
V