beautypg.com

Data sheet, Typical performance characteristics, Electrical characteristics (continued) – Diodes AZ34063D User Manual

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

background image

1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063D

6

Mar. 2010 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

Time 20

µs/DIV

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*

Figure 6. Oscillator Frequency vs.Timing Capacitor

Figure 7. Standby Supply Current vs. Supply Voltage

Electrical Characteristics (Continued)

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

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

To

n-

of

f Ou

tp

ut

Sw

itc

h

O

n-

O

ff

Ti

me

(

µ

s)

C

T

Oscillator Timing Capacitor (nF)

0.1

1

10

100

1

10

100

O

scill

at

o

r F

reque

ncy

(k

Hz)

C

T

Timing Capacitor (nF)

V

CC

=5.0V

V

PIN7

=V

CC

V

PIN5

=GND

T

A

=25

O

C

(

V

CC

=5.0V, T

A

=25

o

C, unless otherwise specified.)

V

o

sc Oscillat

o

r V

o

ltage (V)

2

00

m

V

/DI

V