AZ494 Datasheet, PDF (6/12 Pages) List of Unclassifed Manufacturers – PULSE-WIDTH-MODULATION CONTROL CIRCUITS

Advanced Analog Circuits
Data Sheet
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
Electrical Characteristics (Continued)
AZ494
Parameter
Symbol Conditions
Min Typ Max Unit
Output Control Input Current
V_I = V_ref
3.5 mA
Dead-Time Control Section
Input Bias Current
V_I = 0 to 5.25V
-2 -10 µA
Maximum Duty Cycle,
Each Output
V_I (DEAD-TIME CTRL) = 0, C_T
45
%
=0.01µF, R_T =12KΩ
Input Threshold Voltage
Zero Duty Cycle
3 3.3
V
Maximum Duty Cycle
0
PWM Comparator Section (See Figure 4)
Input Threshold Voltage (FEEDBACK)
Zero duty cycle
4 4.5 V
Input Sink Current (FEEDBACK)
V(FEEDBACK) = 0.7V
0.3 0.7
mA
Total Device
Standby Supply Current
I_STDBY RT=V_ref, All other V_CC = 15V
inputs and outputs
open
V_CC = 36V
6 10 mA
9 15
Average Supply Current
V_I (DEAD-TIME-CTRL) =2V
See Figure 4.
7.5
mA
Switching Characteristics
Rise Time
Fall Time
t_r Common-emitter Configuration
See Figure 6
t_f
100 200 ns
25 100 ns
Rise Time
Fall Time
t_r Emitter-follower Configuration
t_f
See Figure 7
100 200 ns
40 100 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.
March. 2003
6
Rev.1.0