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EC4501 Datasheet(PDF) 5 Page - E-CMOS Corporation

Part # EC4501
Description  White LED Set-up Converter
PDF  10 Pages
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Manufacturer  E-CMOS [E-CMOS Corporation]
Direct Link  http://www.ecmos.com.tw/
Logo E-CMOS - E-CMOS Corporation

EC4501 Datasheet(HTML) 5 Page - E-CMOS Corporation

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White LED Set-up Converter
EC4501
E-CMOS Corp. (www.ecmos.com.tw)
Page 5 of 10
3F27N-Rev.P001
Electrical Characteristics
The following specifications apply for VIN= VEN =3.6V TA=25 oC, unless specified otherwise.
Symbol
Parameter
Test Conditions
EC4501
Unit
Min.
Typ.
Max.
VIN
Input Voltage
3.0
5.5
V
VFB
FB Pin Voltage
Driving 4xLED@20mA
94
104
114
mV
Isw
SW Pin leakage Current
VEN =0, VSW =20V
1
µA
Ioff
Operating Current（Shutdown）
0.1
1
µA
Isby
Operating Current（Quiescent）
VFB=0.5V
100
350
µA
Fsw
Switching Frequency
1.0
1.25
1.5
MHz
Dmax
Maximum Duty Cycle
VFB=0V
85
90
%
VEN_H
EN Minimum High Level
1.5
V
VEN_L
EN Maximum Low Level
0.4
V
RON
SW On Resistance
1.4
Ω
ILIMIT
SW Current Limit
400
mA
VOV
Open Circuit Shutdown Threshold
VOV Rising
20
V



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