KA3843 ESTEK [Estek Electronics Co. Ltd], KA3843 Datasheet - Page 7

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

Address :
Tel: [phone] / 81 / 82 / 83 / 84
Ordering Information
Postalcode:100039
Http://www.estek.com.cn
Email:[e-mail]
V
(V)
sat
-2
-1
3
2
0
1
0
O RDERI NG NUM BER
Figure
Current
80
R ate
V
3842 / 43 / 44/ 45
s µ
15 V
.
7 Output Saturation Voltage vs. Load
Rm 6A07,Changyin Office Building ,No.88,Yong Ding Road,Hai Dian District ,Beijing
200
Pulsed Load 120Hz
R
/
T
Sink Sa tura tion
(Lo a d to
Sourse Saturation
(Load to Ground)
R
C
T
T
Vref
T
400
25
4
8
.
I
PWM
D
600
CLOCK
OSCILLATOR
Figure 9. Oscillator and Output Waveforms
5V REG
I
5
7
V
GND
CC
Fax : [phone]
SOP - 8 / DI P - 8
(
O
P ACK AG E
m
6A06--6A07
7
6
(m A)
OUTPUT
I
CC
20
10
15
0
5
0
OUTPUT
OUTPUT
R /C
R /C
Figure
Voltag
T
T
SMALL R
LARGE R / SMALL C
T
.
e
T
.
8 Supply Current vs. Supply
KA3842/ 43 / 44/ 45
BEIJING ESTEK ELECTRONICS CO.,LTD
10 20
M AR K I NG
T
/ LARGE
REV No:01-060815
I
= Se nse
R
T
C
C
A
=
10K
T
3.3nF
0V
25
30
0V
V
(
CC