KA3525A
ELECTRICAL CHARACTERISTICS
(V
CC
= 20V, T
A
= -35
SMPS CONTROLLER
Î
to +85
Î
, unless otherwise specified)
Symbol
V
IO
I
BAIS
I
IO
G
VO
CMRR
PSRR
D
(MIN)
D
(MAX)
V
TH1
V
TH2
I
SOFT
V
SL
V
TH(SD)
I
N(SD)
V
OL I
V
OL II
V
CH I
V
CH II
V
UV
I
LKG
t
R
t
F
I
CC
C
L
V
SD
= 2.5V
I
SINK
= 20mA
I
SINK
= 100mA
I
SOURCE
= 20mA
I
SOURCE
= 100mA
V
8
and V
9
= High
C
L
= 1
V
CC
= 35V
J
Characteristic
Input Offset Voltage
Input Bias Current
Input Offset Current
Open Loop Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
PWM COMPARATOR SECTION
Minimum Duty Cycle
Maximum Duty Cycle
Input Threshold Voltage (Note 2)
Input Threshold Voltage (N0te 2)
SOFT-START SECTION
Soft Start Current
Soft Start Low Level Voltage
Shutdown Threshold Voltage
Shutdown Input Current
OUTPUT SECTION
Low Output Voltage I
Low Output Voltage II
High Output Voltage I
High Output Voltage II
Under Voltage Lockout
Collector Leakage Current
Rise Time (Note 1)
Fall Time (Note 1)
STANDBY CURRENT
Supply Cuttent
Test Conditions
Min
Typ
1.5
1
0.1
Max
10
10
1
Unit
mV
ERROR AMPLIFIER SECTION
(V
CM
= 5.1V)
R
L
10M
`
s
A
s
A
dB
dB
dB
60
60
50
80
90
60
0
V
CM
= 1.5 to 5.2V
V
CC
= 8 to 3.5V
%
%
V
45
Zero Duty Cycle
Max Duty Cycle
V
SD
= 0V, V
SS
= 0V
V
SD
= 25V
0.7
25
0.7
49
0.9
3.2
51
0.3
1.3
0.3
0.1
0.05
3.6
80
0.7
1.7
1
0.4
2
V
s
A
V
V
mA
V
V
V
V
18
17
6
19
18
7
80
80
70
12
8
200
600
300
20
s
F, T = 26
Î
= 1
s
F, T = 25
Î
J
s
A
nS
nS
mA
V
V
CC
= 35V
(Note)
1. These parameters. although guaranteed over the recommended operating conditions, are not 100% tested in
production
2. Tested at f
OSC
=40 KHz (R
T
=3.6K, C
T
=0.01 F, R
I
= 0 )
s
`
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
