1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER

AZ34063U

6

Jan. 2013 Rev. 1. 3

BCD Semiconductor Manufacturing Limited

Data Sheet

Figure 4. Output Switch On-Off Time vs.

Figure 5. Timing Capacitor Waveform

Typical Performance Characteristics

Oscillator Timing Capacitor

≥ 10

Forced

β of output switch:

* The 100

Ω resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.

Time 20

μs/DIV

Pin 1,5,8=open

Figure 6. Oscillator Frequency vs.Timing Capacitor

Figure 7. Standard Supply Current vs. Supply Voltage

Electrical Characteristics (Continued)

0

5

10

15

20

25

30

35

40

0.5

1.0

1.5

2.0

2.5

3.0

3.5

C

V

V

V

0.1

1

10

100

1

10

100

1000

t

off

t

on

V

V

V

T

C

(

0.1

1

10

100

1

10

100

C

V

V

V

T