AZ494B_05 Datasheet, PDF (5/12 Pages) BCD Semiconductor Manufacturing Limited – PULSE-WIDTH-MODULATION CONTROL CIRCUITS

Data Sheet
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
Electrical Characteristics
T_A = 25^oC, V_CC=15V, f=10KHz unless otherwise noted.
Parameter
Symbol Conditions (Note 4)
Reference Section
Output Reference
Voltage
for AZ494B V_REF I_REF=1mA
for AZ494D V_REF I_REF=1mA
AZ494B/D
Min Typ Max Unit
4.875 4.95 5.025 V
4.925 5.0 5.075 V
Line Regulation
R_LINE V_CC = 7V to 36V
2
25
Load Regulation
R_LOAD I_REF=1mA to 10mA
1
15
Short-Circuit Output Current(Note 5)
I_SC V_REF = 0V
25
Oscillator Section, C_T = 0.01µF, R_T = 12KΩ (See Figure 4)
Frequency
f_osc
10
Standard Deviation of Frequency
(Note 6)
All values of V_CC, C_T, R_T and T_A
100
constant
Frequency Change with Voltage
V_CC=7V to 36V, T_A = 25^oC
1
Frequency Change with Temperature
∆T_A= MIN to MAX
10
(Note 7)
Error-Amplifier Section
Input Offset Voltage
V_IO V_O (FEEDBACK) = 2.5V
2
10
Input Offset Current
I_IO V_O (FEEDBACK) = 2.5V
25 250
Input Bias Current
I_BIAS V_O (FEEDBACK) = 2.5V
0.2 1
Common-Mode Input Voltage Range
V_CM V_CC=7V to 36V
-0.3
V_CC-
2
Large-Signal Open-Loop Voltage
Gain
A_VO ∆V_O = 3V, R_L =2KΩ,
V_O =0.5V to 3.5V
70 95
Unity-Gain Bandwidth
GB
800
Common-Mode Rejection Ratio
CMRR V_CC=7V to 36V
65 80
Output Sink Current (FEEDBACK)
I_SINK V_ID = -15mV to -5V,
V(FEEDBACK) = 0.7V
- 0.3 - 0.7
Output Source Current (FEEDBACK) I_SOURCE V_ID = 15mV to 5V, V(FEED- 2
BACK) = 3.5V
Output Section
Collector Off-State Current
I_{C, OFF} V_CE = 36V, V_CC=36V
2 100
Emitter Off-State Current
I_{E, OFF} V_CC = V_C = 36V, V_E = 0
-100
Collector-Emitter
Saturation Voltage
Common
Emitter
Emitter
Follower
V_E = 0, I_C =200mA
V_O (C1 or C2) = 15V,
I_E = -200mA
1.1 1.3
1.5 2.5
mV
mV
mA
KHz
Hz/KHz
Hz/KHz
Hz/KHz
mV
nA
µA
V
dB
KHz
dB
mA
mA
µA
µA
V
Jun. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5