MC34063A, MC33063A

http://onsemi.com

4

Pin 5 = Gnd

Figure 1. Output Switch On–Off Time versus

Oscillator Timing Capacitor

Figure 2. Timing Capacitor Waveform

0.01 0.02

0.05 0.1

0.2

0.5 1.0

2.0

5.0 10

10 µs/DIV

Pin 2 = Gnd

Pins 1, 5, 8 = Open

1000

500

200

100

50

20

10

5.0

2.0

1.0

Figure 3. Emitter Follower Configuration Output

Saturation Voltage versus Emitter Current

Figure 4. Common Emitter Configuration Output

Switch Saturation Voltage versus

Collector Current

Figure 5. Current Limit Sense Voltage

versus Temperature

Figure 6. Standby Supply Current versus

Supply Voltage

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

Pins 3, 5 = Gnd

(See Note 6.)

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

Darlington Connection

Forced β = 20

-55

-25

0

25

50

75

100

125

0

5.0

10

15

20

25

30

35

40

Pin 2 = Gnd

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1.0

1.1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

400

380

360

340

320

300

280

260

240

220

200

3.6

3.2

2.4

2.0

1.6

1.2

0.8

0.4

0

1.0

2.8

Pins 2, 3, 5 = Gnd

(See Note 6.)

6. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.