TPS60251 datasheet(7/28 Pages) TI

No. de pieza	TPS60251

Descripción Electrónicos	HIGH EFFICIENCY CHARGE PUMP FOR 7 WLEDs WITH I2C INTERFACE

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Fabricante Electrónico	TI [Texas Instruments]

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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

60

40

20

3

4

5

6

V -InputVoltage-V

I

0.5mA,V =2.7V

F

0.2mA,V =2.6V

F

1mA,V =2.8V

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

LED

=230mA

V =3.3V

I

TPS60251

SLVS767 – APRIL 2007

TYPICAL CHARACTERISTICS (continued)

DESCRIPTION

REF

Shutdown Current

Shutdown Current vs Input Voltage

Figure 9

Input Current

Input Current vs Supply Voltage, 4 Main LED

Figure 10

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

vs

INPUT VOLTAGE

(2 Sub LED with Light Load Condition,

(4 Main LED - 15mA, 25mA)

× 1 Mode Operation)

Figure 3.

Figure 4.

SWITCH RESISTANCE

vs

FREE-AIR TEMPERATURE

(

×1 Mode)

(

×1 Mode)

Figure 5.

Figure 6.

7

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