Data Sheet
1.5A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER
Electrical Characteristics (Continued)
Forced
β
of output switch:
AZ34063A
I
C
output
≥
10
I
C
driver - 7.0mA*
* The 100Ω resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
Typical Performance Characteristics
Ton-off. Output Switch On-Off Time (
µ
s)
1000
T
A
=25 C
100
O
t
off
10
V
OSC
. Oscillator Voltage (V)
200mV/DIV
V
CC
=5.0V
V
PIN7
=V
CC
V
PIN5
=GND
t
on
1
0.1
1
10
100
V
CC
=5.0V
V
PIN7
=V
CC
V
PIN2
=GND
Pin 1,5,8=open
C
T
=1.0nF
T
A
=25
o
C
Time. 10µs/DIV
C
T
, Oscillator Timing Capacitor (nF)
Figure 4. Output Switch On-Off Time vs.
Oscillator Timing Capacitor
Figure 5. Timing Capacitor Waveform
3.5
100
Frequency (KHz)
T
A
=25 C
10
O
I
CC
. Supply Current (mA)
V
CC
=5.0V
V
PIN7
=V
CC
V
PIN5
=GND
3.0
2.5
2.0
1.5
C
T
=1.0nF
V
PIN7
=V
CC
V
PIN2
=GND
1
1.0
0.5
0.1
1
10
100
0
5
10
15
20
25
30
35
40
C
T
, Oscillator Timing Capacitor (nF)
V
CC
. Supply Voltage (V)
Figure 6. Oscillator Frequency vs.Timing Capacitor
Figure 7. Standard Supply Current vs. Supply Voltage
Sep. 2006 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
6
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
