PAM2803

Document number: DS36400 Rev. 2 - 2

1 of 9

www.diodes.com

December 2014

© Diodes Incorporated

PAM2803

A Product Line of

Diodes Incorporated

3W HIGH POWER WHITE LED DRIVER

Description

The PAM2803 is a step-up DC-DC converter that delivers a regulated

output current. The device switches at a 1.0MHz constant frequency,

allowing for the use of small value external inductor and ceramic

capacitors.

The PAM2803 is targeted to be used for driving loads up to 1A from a

two-cell alkaline battery. The LED current can be programmed by the

pin (FB) and ground. A low 95mV feedback voltage reduces the

power loss in the Rs for better efficiency. With its internal 2A, 100mΩ

NMOS switch, the device can provide high efficiency even at heavy

load are completely disconnected and the current consumption is

reduced to less than 1µA.

The PAM2803 is available in the 6-lead SOT23-6 package.

Features



LED Power Efficiency: up to 90%









1MHz Switching Frequency



Uses Small, Low Profile External Components





Over Temperature Protection



Low Profile SOT23-6 Package



Pb-Free Package

Pin Assignments

Applications



White LED Torch (Flashlight)



White LED Camera Flash



DSC (Digital Still Camera) Flash



Cellular Camera Phone Flash



PDA Camera Flash



Camcorder Torch (Flashlight) Lamp

Typical Applications Circuit