RT9379 datasheet(5/9 Pages) RICHTEK

Part #	RT9379

Description	6 Channels 150mA x1/x1.5/x2 Charge Pump White LED Driver

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Manufacturer	RICHTEK [Richtek Technology Corporation]

Direct Link	http://www.richtek.com

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RT9379

5

DS9379-01 April 2011

www.richtek.com

Shutdown Current vs. Input Voltage

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

2.8

3

3.2 3.4 3.6 3.8

4

4.2 4.4 4.6 4.8

5

Input Voltage (V)

Typical Operating Characteristics

x1 Mode Quiescent Current vs. Input Voltage

1.00

1.05

1.10

1.15

1.20

1.25

1.30

2.8

3

3.2 3.4 3.6 3.8

4

4.2 4.4 4.6 4.8

5

Input Voltage (V)

x2 Mode Quiescent Current vs. Input Voltage

2.0

2.5

3.0

3.5

4.0

4.5

2.8

3

3.2 3.4 3.6 3.8

4

4.2 4.4 4.6

4.8

5

Input Voltage (V)

VIN = 3.2V

Time (100

μs/Div)

C2P

(2V/Div)

VOUT

(1V/Div)

EN

(5V/Div)

IIN

(200mA/Div)

x1 Mode Inrush Current Response

LED Current vs. Input Voltage

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

2.8

3

3.2 3.4 3.6 3.8

4

4.2 4.4 4.6 4.8

5

Input Voltage (V)

LED1

LED2

LED3

LED4

LED5

LED6

LED VF = 3.02V

Efficiency vs. Input Voltage

0

10

20

30

40

50

60

70

80

90

100

2.8

3

3.2 3.4 3.6 3.8

4

4.2 4.4 4.6 4.8

5

Input Voltage (V)

LED VF = 3.02V

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RT9379 Datasheet(PDF) 5 Page - Richtek Technology Corporation

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