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KA7500C Datasheet(PDF) 3 Page - Fairchild Semiconductor

Part No. KA7500C
Description  SMPS Controller
Download  8 Pages
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA7500C Datasheet(HTML) 3 Page - Fairchild Semiconductor

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KA7500C
3
Electrical Characteristics
(VCC = 20V, f = 10kHz, TA = -25
°C to +85°C, unless otherwise specified)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
REFERENCE SECTION
Reference Output Voltage
VREF
IREF = 1mA, TA=25
°C(Note1)
4.95
5.0
5.05
V
IREF = 1mA
4.9
5.0
5.1
Line Regulation
RLine
VCC = 7V to 40V
-
2.0
25
mV
Load Regulation
RLOAD
IREF = 1mA to 10mA
-
1.0
15
mV
Short Circuit Output Current
ISC
VREF = 0V
10
35
50
mA
OSCILLATOR SECTION
Oscillation Frequency
fosc
CT = 0.001
µF, RT = 30KΩ
-40
-
kHz
CT = 0.001
µF, RT = 12KΩ,TA=25°C
9.2
10
10.8
CT = 0.001
µF, RT = 30KΩ,
TA=Tlow to Thigh
9.0
-
12
Frequency Change with
Temperature
∆f/∆TCT = 0.01µF, RT = 12KΩ
--
2
%
DEAD TIME CONTROL SECTION
Input Bias Current
IBIAS
VCC = 15V, 0V
≤ V4 ≤ 5.25V
-
-2.0
-10
µA
Maximum Duty Cycle
D(MAX)
VCC = 15V, V4 = 0V
O.C Pin = VREF
45
-
-
%
Input Threshold Voltage
VITH
Zero Duty Cycle
-
3.0
3.3
V
Max. Duty Cycle
0
-
-
ERROR AMP SECTION
Input Offset Voltage
VIO
V3 = 2.5V
-
2.0
10
mV
Input Offset Current
IIO
V3 = 2.5V
-
25
250
mA
Input Bias Current
IBIAS
V3 = 2.5V
-
0.2
1.0
µA
Common Mode Input Voltage
VCM
7V
≤ VCC ≤ 40V
-0.3
-
VCC
V
Open-Loop Voltage Gain
GVO
0.5V
≤ V3 ≤ 3 .5V
70
95
-
dB
Unit-Gain Bandwidth
BW
-
-
650
-
kHz
PWM COMPARATOR SECTION
Input Threshold Voltage
VITH
Zero Duty Cycle
-
4
4.5
V
Input Sink Current
ISINK
V3 = 0.7V
-0.3
-0.7
-
mA
OUTPUT SECTION
Output Saturation Voltage
Common Emitter
VCE(SAT)
VE = 0V, IC = 200mA
-
1.1
1.3
V


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