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TCA62735AFLG Fiches technique(PDF) 4 Page - Marktech Corporate

No de pièce TCA62735AFLG
Description  Charge Pump type DC/DC Converter for White LED Driver
Download  12 Pages
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Fabricant  MARKTECH [Marktech Corporate]
Site Internet  http://www.marktechopto.com
Logo MARKTECH - Marktech Corporate

TCA62735AFLG Fiches technique(HTML) 4 Page - Marktech Corporate

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TCA62735AFLG
TENTATIVE
This datasheet is tentative, the values and contents are subject to change without any notice.
2005-04-26 (Page 4 of 12)
Constant Current Driver part
(VIN=2.8V to 4.2V, Topr=-40 to 85°C, if it is not specified.)
Characteristics
Symbol
Test Condition
Min
Typ
Max
Unit
RSET=47kΩ
-
5.1
-
RSET=12kΩ
-
19.6
-
Constant Current Drive Setting
ILED1~4
RSET=8.2kΩ
-
28
-
mA
ISET Terminal Output Voltage
VSET
RSET=8.2kΩ
-
0.61
-
V
Between Chs |ILED-LED-ERR|
-
2.5
%
Constant Current
Accurac y Between ICs
|ILED-ERR|
-
5
%
Constant Sink Current
Supply Vo lt age Regula t ion
|∆ILED|
VIN=3.6V center
VIN=2.8 to 4.2V
IOUT=80mA
CIN=2.2µF
1
%
Outpu t le akage current
ILEAK1~4
EN="H"
ILED1 to4="OFF"
1
µA
Reference data
Quiescent Current vs. IOUT Current
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
20
40
60
80
100
120
IOUT Current (mA)
VIN=2.7V
VIN=3.6V
VIN=4.3V
Efficiency vs. VIN
0
10
20
30
40
50
60
70
80
90
100
2.7
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
VIN (V)
4LEDs at 20mA LED Vf=3.51V
Quiescent Current vs. VIN
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
2.83.0
3.23.4
3.63.8
4.04.2
VIN (V)
4LEDs at 30mA
4LEDs at 20mA
4LEDs at 5mA
Efficiency vs. IOUT
0
10
20
30
40
50
60
70
80
90
100
0
20
40
60
80
100
120
IOUT (mA)
VIN=3.0V
VIN=3.3V
VIN=3.6V
VIN=3.9V
VIN=4.2V
LED Vf=3.3V


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