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CM494CS 数据表(PDF) 6 Page - List of Unclassifed Manufacturers

部件名 CM494CS
功能描述  ADVANCED REGULATING PULSE WIDTH MODULATOR
PDF  9 Pages
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制造商  ETC [List of Unclassifed Manufacturers]
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标志 ETC - List of Unclassifed Manufacturers

CM494CS 数据表(HTML) 6 Page - List of Unclassifed Manufacturers

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CM494
ADVANCED REGULATING PULSE WIDTH MODULATOR
2000/12/29
Preliminary
Champion Microelectronic Corporation
Page 5
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
Output Section
Collector off-state current
VCE = 40V, Vcc = 40V
2
100
µA
Emitter off-state current
Vcc = Vc = 40V, VE = 0
-100
µA
Common-Emitter
VE = 0, lc = 200mA
1.1
1.3
V
Collector-Emitter
Saturation voltage
Emitter-follower
Vc =15 V, lE = -200mA
1.5
2.5
V
Output control input current
Vl = VREF
3.5
mA
PWM Comparator Section
Input threshold voltage (Pin 3)
Zero duty-cycle
4
4.5
V
Input sink current (Pin 3)
V (Pin 3) = 0.7V
0.3
0.7
mA
Steering Control
V (Pin 13) = 0.4V,Q1 ACTIVE
-200
µA
Input current
V (Pin 13) = 2.4V,Q2 ACTIVE
300
µA
Deadband
500
mA
Zener Diode Circuit（UC495A）
Breakdown voltage
Vcc = 45V, lz = 2mA
36
39
.45
V
Sink current
V (Pin 15) = 1V
0.2
0.3
0.6
mA
Total Device
Vcc = 15V
6
10
mA
Standby supply current
Pin 6 at VREF, All other inputs
and outputs open
Vcc = 40V
9
15
mA
Under voltage lockout
3.5
6.5
V
Hysteresis
300
mV
Switching Characteristics（TA = 25℃）
Output voltage rise time
Common-emitter configuration
100
200
ns
Output voltage fall time
RL = 68Ω, CL= 15pF
25
100
ns
Output voltage rise time
Emitter-follower configuration
100
200
ns
Output voltage fall time
RL= 68Ω, CL= 15pF
40
100
ns
Note 1: Duration of the short circuit should not exceed one second.
Note 2: Frequency for other values of CT and RT is approximately f = 1.1/RTCT
Note 3: Standard deviation is measure of the statistical distribution about the mean as derived from the formula:
σ =
n
Σ(Xn -X)
2
n=1
n-1



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