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CM6903IZ Datasheet(PDF) 4 Page - Champion Microelectronic Corp.

Part # CM6903IZ
Description  Low Pin Count PFC/PWM Controller Combo
Download  14 Pages
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Manufacturer  CHAMP [Champion Microelectronic Corp.]
Direct Link  http://www.champion-micro.com
Logo CHAMP - Champion Microelectronic Corp.

CM6903IZ Datasheet(HTML) 4 Page - Champion Microelectronic Corp.

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CM6903/4
Low Pin Count PFC/PWM CONTROLLER COMBO
2002/12/16
Preliminary Rev. 0.4
Champion Microelectronic Corporation
Page 4
ELECTRICAL CHARACTERISTICS (Conti.) Unless otherwise stated, these specifications apply
Vcc=+15V, RT = 52.3kΩ, CT = 470pF, TA=Operating Temperature Range (Note 1)
CM6903/4
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
PFC OVP Comparator
Threshold Voltage
2.70
2.77
2.85
V
Hysteresis
230
290
mV
PFC ILIMIT Comparator
Threshold Voltage
-0.9
-1
-1.15
V
Delay to Output
150
300
ns
VIN OK Comparator
Threshold Voltage
2.35
2.45
2.55
V
Hysteresis
1.65
1.75
1.85
V
PWM Digital Soft Start
Right After Start Up (CM6903)
10
ms
Digital Soft Start Timer (Note 2)
Right After Start Up (CM6904)
5
ms
DC ILIMIT Comparator
Threshold Voltage
1.4
1.5
1.6
V
Delay to Output (Note 2)
150
300
ns
Tri-Fault Detect Comparator
Fault Detect HIGH
2.65
2.75
2.85
V
Time to Fault Detect HIGH
VFB=VFAULT DETECT LOW to VFB = OPEN,
470pF from VFB to GND
2
4
ms
Fault Detect LOW
0.4
0.5
0.6
V
Oscillator
Initial Accuracy
TA = 25℃
62
67
74
kHz
Voltage Stability
10V < VCC < 15V
1
%
Temperature Stability
2
%
Total Variation
Line, Temp
60
67
74.5
kHz
PFC Dead Time (Note 2)
0.3
0.45
0.65
µs
PFC
Minimum Duty Cycle
IAC=100uA,VFB=2.55V, ISENSE = 0V
0
%
Maximum Duty Cycle
IAC=0uA,VFB=2.0V, ISENSE = 0V
90
95
%
Output Low Impedance
8
15
ohm
IOUT = -100mA
0.8
1.5
V
Output Low Voltage
IOUT = -10mA, VCC = 8V
0.4
0.8
V
Output High Impendence
8
15
ohm
Output High Voltage
IOUT = 100mA, VCC = 15V
13.5
14.2
V
Rise/Fall Time (Note 2)
CL = 1000pF
50
ns


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