Data sheet, Typical performance characteristics, Electrical characteristics (continued) – Diodes AZ34063U User Manual

Page 6: Output ≥ 10, Driver - 7.0ma, 0v, t, C, unless otherwise specified.), Oscillator timing capacitor

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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

I

C

output

≥ 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.

I

C

driver - 7.0mA*

Time 20

μs/DIV

Pin 1,5,8=open
C

T

=1.0nF

T

A

=25

o

C

V

CC

=5.0V

V

PIN7

=V

CC

V

PIN2

=GND

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

T

=1.0nF

V

PIN7

=V

CC

V

PIN2

=GND

I

CC

Supply Curr

e

nt

(

m

A)

V

CC

Supply Voltage (V)

0.1

1

10

100

1

10

100

1000

t

off

t

on

V

CC

=5.0V

V

PIN7

=V

CC

V

PIN5

=GND

T

A

=25

O

C

T

o

n-of

f O

u

tput Switch O

n

-O

ff

T

im

e

(

μ

s)

C

T

Oscillator Timing Capacitor (nF)

(

V

CC

=5.0V, T

A

=25

o

C, unless otherwise specified.)

0.1

1

10

100

1

10

100

O

scil

lator F

requ

ency (kHz

)

C

T

Timing Capacitor (nF)

V

CC

=5.0V

V

PIN7

=V

CC

V

PIN5

=GND

T

A

=25

O

C

V

OSC

O

scil

lat

or V

olta

ge (V)

2

00

m

V

/DI

V

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