Data Sheet
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
Electrical Characteristics (Continued)
Parameter
Output Control Input Current
Dead-Time Control Section
Input Bias Current
Maximum Duty Cycle,
Each Output
Input Threshold Voltage
PWM Comparator Section (See Figure 4)
Input Threshold Voltage (FEEDBACK)
Input Sink Current (FEEDBACK)
Total Device
Standby Supply Current
I
STDBY
V
RT
=V
REF
,
All V
CC
= 15V
other inputs and V = 36V
CC
outputs open
V
I
(DEAD-TIME-CTRL) =2V
See Figure 4.
t
r
t
f
t
r
t
f
Common-emitter Configuration
See Figure 6
Emitter-follower Configuration
See Figure 7
6
9
7.5
10
15
mA
mA
Zero duty cycle
V(FEEDBACK) = 0.7V
-0.3
4
-0.7
4.5
V
mA
V
I
= 0 to 5.25V
V
I
(DEAD-TIME CTRL) = 0, C
T
=0.01µF, R
T
=12KΩ
Zero Duty Cycle
Maximum Duty Cycle
0
-2
45
3
3.3
-10
µA
%
V
Symbol
Conditions (Note 4)
V
I
= V
REF
Min
Typ
Max
3.5
Unit
mA
AZ494B/D
Average Supply Current
Switching Characteristics
Rise Time
Fall Time
Rise Time
Fall Time
100
25
100
40
200
100
200
100
ns
ns
ns
ns
Note 4: For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating
conditions.
Note 5: Duration of the short circuit should not exceed one second.
Note 6: Standard deviation is a measure of the statistical distribution about the mean as derived from the formula:
Note 7: Temperature coefficient of timing capacitor and timing resistor are not taken into account.
Jun. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
6
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
