AZ494A_06 Datasheet, PDF (5/13 Pages) BCD Semiconductor Manufacturing Limited – PULSE-WIDTH-MODULATION CONTROL CIRCUITS

Data Sheet
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
AZ494A/C
Electrical Characteristics
T_A = 25^oC, V_CC=20V, f=10KHz unless otherwise noted.
Parameter
Symbol Conditions
Min Typ Max Unit
Reference Section
Output Reference Voltage
for AZ494A
V_REF
I_REF=1mA
I_REF=1mA, T_A= -40 to 85^oC
4.90 4.95 5.0
V
4.85 4.95 5.05
V
Output Reference Voltage
for AZ494C
V_REF
I_REF=1mA
I_REF=1mA, T_A= -40 to 85^oC
4.95 5.0 5.05 V
4.9 5.0 5.1
V
Line Regulation
R_LINE V_CC = 7V to 36V
2
25
mV
Load Regulation
R_LOAD I_REF=1mA to 10mA
1
15
mV
Short-Circuit Output Current
I_SC V_REF = 0V
10 35 50
mA
Oscillator Section
Oscillator Frequency
C_T=0.001µF, R_T=30KΩ,
40
f_OSC ^{CT=0.01µF, RT=12KΩ}
9.2 10 10.8 _KHz
C_T=0.01µF, R_T=12KΩ, T_A= -40 9.0
12
to 85^oC
Frequency Change with Temperature
∆f /∆T C_T=0.01µF, R_T=12KΩ, T_A= -40
to 85^oC
1
%
Dead-Time Control Section
Input Bias Current
I_BIAS V_CC=15V, V4= 0 to 5.25V
-2 -10
µA
Maximum Duty Cycle,
D(MAX) V_CC=15V, V4= 0V,
45
%
Pin 13= V_REF
Input Threshold Voltage
V_ITH Zero Duty Cycle
Maximum Duty Cycle
3 3.3
V
0
Error-Amplifier Section
Input Offset Voltage
V_IO V3 = 2.5V
2
10
mV
Input Offset Current
I_IO V3 = 2.5V
25 250
nA
Input Bias Current
I_BIAS V3 = 2.5V
0.2 1
µA
Common-Mode Input Voltage Range
V_CM V_CC=7V to 36V
-0.3
V_CC-2
V
Open-Loop Voltage Gain
G_VO V_O =0.5V to 3.5V
70 95
dB
Unity-Gain Bandwidth
BW
650
KHz
Common-Mode Rejection Ratio
CMRR
65 80
dB
Output Sink Current (Feedback)
I_SINK V_ID = -15mV to -5V,
V3 = 0.7V
-0.3 -0.7
mA
Output Source Current (Feedback)
I_SOURCE V_ID=15mV to 5V
2
mA
V3 = 3.5V
Apr. 2006 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5