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TPS60250 Datenblatt(Datasheet) 6 Page - Texas Instruments

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Teile-Nr. TPS60250
Beschreibung  HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE
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Hersteller  TI [Texas Instruments]
Homepage  http://www.ti.com
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90
80
70
60
50
3
4
5
6
V -InputVoltage-V
I
15mA,V =3.43V
F
25mA,V =3.79V
F
100
80
40
60
20
3
4
5
6
V -InputVoltage-V
I
0.2mA,V =2.6V
F
1mA,V =2.8V
F
0.5mA,V =2.7V
F
-40
-20
0
20
40
60
80
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1
1.05
1.10
T
-Free-AirTemperature-°C
A
I
LED
=100mA
V =3.6V
I
V =3.9V
I
V =3.3V
I
-40
-20
0
20
40
60
80
0.70
0.75
0.80
0.85
0.90
0.95
1
1.05
1.10
1.15
T
-Free-AirTemperature-°C
A
V =3.6V
I
V =3.9V
I
I
LED
=230mA
V =3.3V
I
TPS60250
SLVS769 – APRIL 2007
TYPICAL CHARACTERISTICS (continued)
DESCRIPTION
REF
DM5 with Maximum 80
DM5 Current vs Input Voltage, Programmed with 80 mA
Figure 11
mA
Current Accuracy
WLED Current vs Input Voltage, 4 Main LED with 15 mA
Figure 12
EFFICIENCY
EFFICIENCY
vs
vs
INPUT VOLTAGE
INPUT VOLTAGE
(2 Sub LED with Light Load Condition,
(4 Main LED - 15mA, 25mA)
× 1 Mode Operation)
Figure 3.
Figure 4.
SWITCH RESISTANCE
SWITCH RESISTANCE
vs
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
(
×1 Mode)
(
×1 Mode)
Figure 5.
Figure 6.
6
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