S3843
Electrical Characteristics(continued)
(Vcc=15V, Rt=10Kohm, Ct=3.3nF, Ta=0℃ to 70℃, Unless otherwise specified)
Characteristic
5. Output Section
Output Low Level1
Output Low Level2
Output High Level1
Output High Level2
V
OL
(UVLO)
Rise Time
Fall Time
Symbol
V
OL1
V
OL2
V
OH1
V
OH2
-
t
r
t
f
V
th
V
tL
D
max
D
min
I
st
I
CC
V
Z
Test Condition
Isink=20mA
Isink=200mA
Isource=20mA
Isource=200mA
V
CC
=6V, I
sink
= 1mA
Min.
-
-
13.0
12.0
-
-
-
Typ. Max.
0.1
1.5
13.5
13.5
0.7
50
50
0.4
2.0
-
-
1.2
150
150
Unit
V
V
V
V
V
nS
nS
Tj=25
°C,
C
1
=1nF
Tj=25
°C,
C
1
=1nF
-
After turn on
6. Under Voltage Lockout Section
Start Threshold
Min. Operating Voltage
7.8
7
8.4
7.6
9
8.2
V
V
7. PWM Section
Maximum Duty Cycle
Minimum Duty Cycle
-
-
93
-
97
-
100
0
%
%
8. Total Standby Section
Start-Up Current
Operating Supply Current
V
CC
Zener Voltage
-
-
-
-
0.5
11
35
1
20
-
mA
mA
V
V
pin2
=V
pin3
=0V
I
CC
=25mA
NOTE: Adjust Vcc above the start threshold before setting at 15V
Block Diagram
7
35V
5V
V ref
Set/
Res et
Vcc
Vref
8
5
UV LO
GND
In t e r n a l
Bi a s
LO G IC
PWR Vc
1/2 V r e f
Er r or Amp
C.S Comp
1/3
1V
PWM
LA T CH
7
Vfb
2
+
-
R
6
S
Output
Com
1
C.S
3
PWR GND
5
T
Rt/Ct
4
O s c i l l a t or
KSI-8007-001
3
AUK [ AUK CORP ]
