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CS51220 Datasheet(PDF) 4 Page - ON Semiconductor

Part No. CS51220
Description  Feed Forward Voltage Mode PWM Controller with Programmable Synchronization
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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CS51220 Datasheet(HTML) 4 Page - ON Semiconductor

 
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CS51220
http://onsemi.com
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ELECTRICAL CHARACTERISTICS (−40°C < TA < 85°C; −40°C < TJ < 125°C; 4.7 V < VCC < 16 V; CT = 390 pF; unless
otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Supply Voltage/Current
Start Threshold
4.0
4.4
4.7
V
Stop Threshold
3.3
3.8
4.1
V
Hysteresis
Start − Stop
400
600
1000
mV
ICC @ Startup
VCC < UVL Start Threshold
500
μA
ICC Operating, Low VCC
4.7 V < VCC < 10 V
7.5
mA
ICC Operating, High VCC
10 V < VCC < 16 V
9.0
mA
Reference Voltage
Total Accuracy
0 mA < IREF < 2.0 mA
3.2
3.3
3.4
V
Line Regulation
IREF = 2.0 mA
6.0
20
mV
Load Regulation
0 mA < IREF < 2.0 mA, VCC = 8.0 V
6.0
15
mV
Operating Life Shift
T = 1000 Hrs., Note 2
4.0
20
mV
Fault Voltage
2.8
2.95
3.1
V
VREF OK Voltage
2.9
3.05
3.2
V
VREF OK Hysteresis
50
100
150
mV
Current Limit
VREF = 2.5 V
2.0
25
65
mA
Oscillator
Frequency Accuracy
223
266
309
kHz
Temperature Stability
Note 2
8.0
%
Max Frequency
Note 2
500
kHz
Duty Cycle
80
85
90
%
Peak Voltage
Note 2
1.9
2.0
2.1
V
Valley Voltage
Note 2
0.85
0.90
0.98
V
Discharge Current
VCT = 1.5 V
0.70
0.85
1.05
mA
Charge Current
VCT = 1.5 V
127
150
183
μA
Synchronization
SYNCI Input Threshold
fSYNC = 500 kHz
1.0
2.0
3.0
V
SYNCI Input Resistance
VSYNC = 0.5
50
150
250
Minimum Sync Frequency
Reduction of nominal frequency.
25
%
Minimum Input Sync Pulse Width
200
ns
SYNCO Output High
RSYNCO = 5.0 k, VCC = 8.0 V
5.0
6.5
7.5
V
SYNCO Output Low
Sink 1.0 mA, VSD = 2.5 V
0.2
0.4
V
SYNCO Delay Time
VCT = 1.5 V, Toggle VSD
100
200
300
ns
2. Guaranteed by design. Not tested in production.


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