PAM2841SR Diodes Incorporated

A Product Line of Diodes Incorporated PAM2841 1.5A SW CURRENT, 40V PRECISION WLED DRIVER Description Pin Assignments The PAM2841 is a white LED driver, capable of driving 10 or more WLEDs in series (depending on forward voltage of the LEDs) with a range of input voltages from 2.7V to 5.5V. The PAM2841 features over current protection, over voltage protection, under voltage lockout and over temperature protection, which prevent the device from damage. LED dimming can be done by four methods as described in the Application Information hereinafter. Features Capable of Driving 10 or More WLEDs Chip Enable with Soft-Start Analog and PWM Dimming Peak Efficiency up to 90% Low Quiescent Current Fixed Frequency of 1MHz Over Current Protection Over Voltage Protection Thermal Protection UVLO Tiny Pb-Free Packages (RoHS Compliant): MSOP-8 and DFN 2X2 Applications WLED Driver System Typical Applications Circuit 1 of 16 September 2013 PAM2841 Diodes Incorporated www.diodes.com Document number: DSxxxxx Rev. 1 - 5 A Product Line of Diodes Incorporated PAM2841 Typical Applications Circuit (cont.) Pin Descriptions Pin Pin Function Number Name Power Ground 1 PGND 2 VIN Input Voltage 3 ENA Chip Enable, Active High 4 Comp Compensation Node 5 GND Chip Ground Feedback 6 FB Over Voltage 7 OVP 8 SW Drain of Main Switch Functional Block Diagram 2 of 16 September 2013 PAM2841 Diodes Incorporated www.diodes.com Document number: DSxxxxx Rev. 1 - 5