,

Power Analog Microelectronics Inc

7

www.poweranalog.com

0

5

10

15

20

25

20%

40%

60%

80%

100%

Duty cycle

0

1

2

3

4

5

6

010

20

30

Input voltage (V)

PAM2846

Integrated 6 String LED Boost Type Driver

Typical Performance Characteristic

LED Current VS PWMD Duty cycle@100Hz

Shutdown current VS Input Voltage

Input Voltage VS Efficiency

T =25°C, V =ENA=12V,

AIN

Rset=10k , L=22 H, Fsw=500kHz, 10x6 LEDs, unless otherwise noted

Ωμ

0

2

4

6

8

10

6

1014182226

Input Voltage

PWMD=0

Fsw=500KHz

Fsw=1MHz

Fsw=1.6MHz

Quiescent current VS Input Voltage

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

5

9

13

17

21

25

Input Voltage (V)

Fsw =500KHz

Fsw =1MHz

Fsw =1.6MHz

07/2008 Rev 1.2