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KA7577D View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
View to exact match
KA7577D
Fairchild
Fairchild Semiconductor Fairchild
KA7577D Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
KA7577
Electrical Characteristics
(VCC=18V, TA=25°C, unless otherwise specified)
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
OVER VOLTAGE PROTECTION SECTION
OVP Terminal Threshold Voltage
VTH(OVP)
-
1.0 1.4 1.8 V
OVP Terminal Input Current
II(OVP)
-
- 1.2 3.6 µA
OVP Cancellation Voltage
VCC(OVPC)
-
7.6 8.6 -
V
Difference Voltage Between
Operating Stop and OVP Cancellation
VCC(OVP)
-
0.65 1.3 -
V
TIMER SECTION
Timer Frequency
f(TIMER)
-
0.27 0.4 0.6 Hz
Timer Charge Current
ICHG(TIMER)
TA = -5°C
TA = 25°C
TA = 85°C
-193 -138 -102
-178 -127 -94 µA
-147 -105 -78
Off Time/On Time Ratio
K
-
7.0 8.7 11.0 -
CURRENT LINITTING SECTION
CLM( - ) Terminal Threshold Voltage VTH(CLM - ) TA = - 5 to + 85°C
-220 -200 -180 mV
CLM( - ) Terminal Source Current ISOURCE(CLM - ) V(CLM - )
-170 -125 -90 µA
CLM( - ) Terminal Duty Time
tD(CLM - )
170
nS
CLM(+ ) Terminal Threshold Voltage VTH(CLM +) TA = - 5 to + 85°C
180 200 220 mV
CLM(+ ) Terminal Source Current ISOURCE(CLM +) V(CLM +) = 0V
-270 -205 -140 µA
CLM(+ ) Terminal Duty Time
tD(CLM +)
-
-
- 130 nS
OSCILLATOR SECTION
Operation Frequency
RT-ON = 17K
f
RT-OFF = 20K
CF = 220pF
170 188 208 KHz
TA = - 5 to + 85°C
Maximum On Duty
DON(MAX)
TA = - 5 to + 85°C
47 50 53 %
Upper Limit Voltage of Oscillation
Waveform
VL(OSC)
-
3.97 4.37 4.77 V
Lower Limit Voltage of
Oscillation Waveform
VL(OSC)
-
1.76 1.96 2.16 V
Voltage Difference Between
Upper Limit and Lower Limit
V(OSC)
-
2.11 2.41 2.71 V
VF SECTION
OSC. Frequency at CLM Operating
VVF = 5V, RT-ON = 17K
RT-OFF = 20K
170 188 207 KHz
CF = 220pF
fVF
VF = 2V, RT-ON = 17V
RT-OFF = 20K
108 124 143 KHz
CF = 220pF
4
 

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