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CS51220 Datasheet(PDF) 5 Page - ON Semiconductor

No. de Pieza. CS51220
Descripción  Feed Forward Voltage Mode PWM Controller with Programmable Synchronization
Descarga  16 Pages
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Fabricante  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
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CS51220 Datasheet(HTML) 5 Page - ON Semiconductor

 
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CS51220
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ELECTRICAL CHARACTERISTICS (continued) (−40°C < TA < 85°C; −40°C < TJ < 125°C; 4.7 V < VCC < 16 V; CT = 390 pF; unless
otherwise specified.)
Characteristic
Unit
Max
Typ
Min
Test Conditions
Output (continued)
High Saturation Voltage
VCC − VO, VCC = 10 V, ISOURCE = 100 μA
1.4
2.0
V
Low Saturation Voltage
VO − GND, ISINK = 100 μA
0.7
1.0
V
Pull Down Resistance
ISINK = 100 μA
25
50
75
Rise Time
VCC = 10 V, 1.0 V < VO < 6.0 V; 50 pF load
35
80
ns
Fall Time
VCC = 10 V, 1.0 V < VO < 6.0 V; 50 pF load
25
50
ns
Feed Forward
Discharge Voltage
IFF = 2.0 mA
0.25
0.35
0.45
V
Discharge Current
FF = 1.0 V
2.0
10
30
mA
FF to VO Delay
Connect VO to FF, Measure min. pulse width.
50
75
150
ns
FF Clamp Voltage
1.15
1.3
1.45
V
COMP Switch Off Voltage
VFF = 0.2 V, Ramp down VCOMP
VFF = 0.2 V, Ramp down VCOMP −40°C
0.8
1.4
1.4
1.6
1.7
1.7
V
V
Overcurrent Protection
Overcurrent Comparator DC Offset
180
200
215
mV
ISENSE Attenuation
ΔVISET/ΔVISENSE
0.9
0.94
0.98
V/V
ISENSE Input Resistance
ΔVISENSE = 0 V
40
82
150
ISENSE to GATE Delay
VISET = 0.5 V
50
100
175
ns
ISET Foldback Sink Current
ISET = 0.5 V, SS = 1.5 V and ISENSE = 0.5 V
12
15
18
μA
External Voltage Monitors
Overvoltage Threshold
OV pin increasing
1.9
2.0
2.1
V
OV Hysteresis Current
OV = 2.15 V
10
12.5
15
μA
Undervoltage Threshold
UV pin decreasing
0.95
1.00
1.05
V
UV Hysteresis
25
75
125
mV
Soft Start
Charge Current
SS = 1.5 V
35
50
65
μA
Discharge Current
SS = 1.5 V, UV = 1.5 V
4.0
5.0
7.0
μA
OC Delay Discharge Current
SS = 2.85 V, ISET = 0.5, ISENSE = 0.5 V
35
50
65
μA
SS Clamp Voltage
2.7
2.9
3.1
V
Discharge Voltage
0.25
0.3
0.35
V
Soft Start Fault Voltage
OV = 2.5 V or UV = 0.85 V
0.1
0.2
V
Hiccup Delay Discharge Voltage
0.08
0.1
0.12
V
Disable
DISABLE Input Threshold
1.0
2.0
3.0
V
DISABLE Input Resistance
VDISABLE = 0.5 V
50
150
250
DISABLE Operation Current, Low VCC
4.7 V < VCC < 10 V
800
μA
DISABLE Operation Current, High VCC
10 V < VCC < 16 V
1600
μA


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