KA7500C — SMPS Controller
Electrical Characteristics
V
CC
= 20V, f = 10kHz, T
A
= -25°C to +85°C, unless otherwise specified.
Symbol
Reference Section
V
REF
R
LINE
R
LOAD
I
SC
Parameter
Conditions
I
REF
=1mA, T
A
=25°C
I
REF
=1mA
V
CC
=7V to 40V
I
REF
=1mA to 10mA
V
REF
=0V
C
T
=0.001µF, R
T
=30KΩ
(1)
Min.
4.95
4.90
Typ.
5.00
5.00
2
1
Max.
5.05
5.10
25
15
50
Units
Reference Output Voltage
Line Regulation
Load Regulation
Short-Circuit Output Current
V
mV
mV
mA
10
35
40.0
Oscillation Frequency
C
T
=0.01µF, R
T
=12KΩ,
T
A
=25°C
C
T
=0.01µF, R
T
=12KΩ,
T
A
=T
LOW
to T
HIGH
Δf/Δt
I
BIAS
D
(MAX)
V
ITH
Frequency Change with Temperature
Input Bias Current
Maximum Duty Cycle
Input Threshold Voltage
C
T
=0.01µF, R
T
=12KΩ
V
CC
=15V, 0V≤ V
4
≤
5.25V
V
CC
=15V, V
4
=0V, OC
Pin=V
REF
Zero Duty Cycle
Maximum Duty Cycle
V
3
=2.5V
V
3
=2.5V
V
3
=2.5V
7V≤ V
CC
≤
40V
0.5V≤ V
3
≤
3.5V
-0.3
70
95
650
Zero Duty Cycle
V
3
=0.7V
-0.3
4.0
-0.7
4.5
0
2
25
0.2
10
250
1.0
V
CC
45
3.0
3.3
-2
f
OSC
Oscillation Frequency
9.2
9.0
10.0
10.8
12.0
2
-10
kHz
%
µA
%
V
Dead-Time Control Section
Error Amplifier Section
V
IO
I
IO
I
BIAS
V
CIM
G
VO
B
W
V
ITH
I
SINK
Input Offset Voltage
Input Offset Current
Input Bias Current
Common Mode Input Voltage
Open-Loop Voltage Gain
Unit-Gain Bandwidth
Input Threshold Voltage
Input Sink Current
Output Saturation Voltage Common
Emitter
Emitter-Follower
Collector Off-State Current
Emitter Off-State Current
Supply Current
Rise Time, Common Emitter,
Common Collector
Fall Time, Common Emitter,
Common Collector
mV
mA
µA
V
dB
kHz
V
mA
PWM Comparator Section
Output Section
V
CE(SAT)
V
CC(SAT)
I
C(OFF)
I
E(OFF)
I
CC
V
E
=0V, I
C
=200mA
V
C
=15V, I
E
=-200mA
V
CC
=40V, V
CE
=40V
V
CC
=V
C
=40V, V
E
=40V
Pin6=V
REF
, V
CC
=15V
6
1.0
1.5
2
1.3
2.5
100
-100
10
µA
V
Total Device
mA
Output Switching Characteristics
t
R
t
F
100
25
200
ns
100
Note:
1. This is guaranteed where the marking code of the package surface is over 027.
© 2003 Fairchild Semiconductor Corporation
KA7500C • Rev. 1.0.2
www.fairchildsemi.com
5
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
