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MC33063A View Datasheet(PDF) - ON Semiconductor

Part Name
Description
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MC33063A Datasheet PDF : 15 Pages
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MC34063A, MC33063A, SC34063A, SC33063A, NCV33063A
18
180
16
VCC = 5.0 V, Pin 7 = VCC
Pin 5 = GND, TA = 25°C
160
14
140
12
120
ON TIME (ms)
10
100
8
80
6
60
OFF TIME (ms)
4
40
2
FREQUENCY (kHz) 20
0
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Ct, TIMING CAPACITOR CAPACITANCE (nF)
Figure 3. Oscillator Frequency
VCC = 5.0 V
Pin 7 = VCC
Pin 2 = GND
Pins 1, 5, 8 = Open
CT = 1.0 nF
TA = 25°C
10 ms/DIV
Figure 4. Timing Capacitor Waveform
1.8
1.7
1.6
1.5
1.4
1.3
VCC = 5.0 V
1.2
Pins 1, 7, 8 = VCC
Pins 3, 5 = GND
1.1
TA = 25°C
(See Note 7)
1.0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
IE, EMITTER CURRENT (A)
Figure 5. Emitter Follower Configuration Output
Saturation Voltage versus Emitter Current
1.1
1.0
0.9
Darlington Connection
0.8
0.7
0.6 VCC = 5.0 V
0.5 Pin 7 = VCC
0.4
Pins 2, 3, 5 = GND
TA = 25°C
0.3 (See Note 7)
0.2
Forced b = 20
0.1
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
IC, COLLECTOR CURRENT(A)
Figure 6. Common Emitter Configuration Output
Switch Saturation Voltage versus
Collector Current
400
380
360
VCC = 5.0 V
Ichg = Idischg
340
320
300
280
260
240
220
200
-55
-25
0
25
50
75
100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 7. Current Limit Sense Voltage
versus Temperature
3.6
3.2
2.8
2.4
2.0
1.6
1.2
CT = 1.0 nF
0.8
Pin 7 = VCC
Pin 2 = GND
0.4
0
0 5.0 10 15 20 25 30 35 40
VCC, SUPPLY VOLTAGE (V)
Figure 8. Standby Supply Current versus
Supply Voltage
7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
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