,

Power Analog Microelectronics Inc

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www.poweranalog.com

PAM2846

Integrated 6 String LED Boost Type Driver

Typical Performance Characteristic

07/2008 Rev 1.2

T =25°C, V =ENA=12V,

AIN

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

Ωμ

LED Current Waveforms (PWMD=50%)

PWMD

DC

coupling

V

LED1

DC

coupling

I

LED

DC

coupling

LED

(

=80%)

Current Waveforms PWMD

PWMD

DC

coupling

V

LED1

DC

coupling

I

LED

DC

coupling

Startup Waveforms

Vout

DC

coupling

I

L

DC

coupling

ENA

DC

coupling

PWM Dimming (Duty Cycle=20%)

PWMD

DC

coupling

V

LED1

DC

coupling

I

LED

DC

coupling

Start up and Shutdown Waveforms

Vout

DC

coupling

I

L

DC

coupling

ENA

DC

coupling

Vsw

DC

coupling

I

L

DC

coupling

Stable Operation