CM494 Datasheet, PDF (5/9 Pages) List of Unclassifed Manufacturers – ADVANCED REGULATING PULSE WIDTH MODULATOR

CM494
ADVANCED REGULATING PULSE WIDTH MODULATOR
ELECTRICAL CHARACTERISTICS: Unless otherwise stated, over recommended operating free-air
temperature range. Vcc = 15V, f = 10Khz, TA=TJ.
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
Reference Section
Output voltage VREF
lo = 1mA, TA= 25℃
4.75 5 5.25 V
Input regulation
Vcc = 7V to 40V
2 25 mV
Output regulation
lo = 1mA to 10mA
1 15 mV
Output voltage over temperature
Short circuit output current
Oscillator Section
ΔTA= Min. to Max
VREF = 0, TA= 25℃
4.90
5.10 V
10 35 50 mA
Frequency (Note 2)
CT = 0.01µF, RT = 12Ω
10
kHz
Standard deviation of frequency (Note 3)
Frequency change with voltage
Frequency change with temperature
All values of Vcc, CT, RT, TA
Vcc = 7V to 40V, TA= 25℃
CT = 0.01µF, RT = 12kΩ, ΔTA= Min. to Max
10
%
0.1
%
2
%
Deadtime Control Section (Output control connected to VREF )
Input bias current (Pin 4)
V (PIN 4) = 0V to 5.25V
-2 -10 µA
Maximum duty-cycle (each output)
V (PIN 4) = 0V
Deadtime control Section (cont.) （Output control connected to VREF）
45
%
Input threshold voltage (Pin 4)
Zero duty-cycle
3 3.3
V
Maximum duty-cycle
0
V
Amplifier Section
Input offset voltage
Vo (PIN 3) = 2.5V
2 10 mV
Input offset current
Vo (PIN 3) = 2.5V
25 250 nA
Input bias current
Vo (PIN 3) = 2.5V
-0.2 -1
µA
Common-mode input voltage range
Vcc = 7V to 40V
.03 to
V
Vcc -2
Open loop voltage gain
ΔVo = 3V, Vo = 0.5V to 3.5V
70
95
dB
Unity gain bandwidth
800
kHz
Common-mode rejection ratio
Vcc = 40V, TA = 25℃
65
80
dB
Output sink current (Pin 3)
VID = -15mV to –5V, V (Pin 3) = 3.5V
0.3
0.7
mA
Output Source current (Pin 3)
VID = -15mV to 5V, V (Pin 3) = 3.5V
-2
mA
2000/12/29 Preliminary
Champion Microelectronic Corporation
Page 4