RT8532GQW datasheet(7/14 Pages) RICHTEK

Part #	RT8532GQW

Description	6-String 43V White LED Driver with Boost Regulator

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Manufacturer	RICHTEK [Richtek Technology Corporation]

Direct Link	http://www.richtek.com

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7 / 14 page

7

RT8532

DS8532-04

January 2014

www.richtek.com

©

Copyright

is a registered trademark of Richtek Technology Corporation.

Typical Operating Characteristics

fSW vs. RFSW

200

400

600

800

1000

1200

1400

1600

1800

2000

0

20

40

60

80

100

120

140

RFSW (kohm)

9 LEDs per channel

(k

Ω)

Efficiency vs. Input Voltage

0

10

20

30

40

50

60

70

80

90

100

4

8

12

16

20

24

Input Voltage (V)

54 LEDs, fSW = 500kHz, PWM = 3.3V

LED Current vs. PWM Duty Cycle

0

4

8

12

16

20

0

20406080

100

PWM Duty Cycle (%)

9 LEDs per channel, fSW = 500kHz

PWM 100Hz

PWM 1kHz

PWM 10kHz

PWM 20kHz

LED Current vs. Input Voltage

14

16

18

20

22

24

26

4

8

12

16

20

24

Input Voltage (V)

9 LEDs per channel, fSW = 500kHz, PWM = 3.3V

LED1

LED2

LED3

LED4

LED5

LED6

VDC vs. Temperature

2.0

2.5

3.0

3.5

4.0

4.5

5.0

-50

-25

0

25

50

75

100

125

Temperature (°C)

9 LEDs per channel, fSW = 500kHz

LED Current vs. Temperature

14

16

18

20

22

24

26

-50

-25

0

25

50

75

100

125

Temperature (°C)

9 LEDs per channel, fSW = 500kHz, PWM = 3.3V

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RT8532GQW Datasheet(PDF) 7 Page - Richtek Technology Corporation

RT8532GQW Datasheet(HTML) 7 Page - Richtek Technology Corporation

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