2009/04/20

Ver.2

Page 1

SP1820

Four Channels Constant Current LED Driver

DESCRIPTION

APPLICATIONS

The SP1820 is a four channels constant current driver

white LED. The device can drive up to 20mA load

current per channel from single cell Lithium Ion battery.

SP1820 can provide lowest cost LED driver for various

applications. It does not require any external

components. Internal thermal protection automatically

adjusts LED current to prevent overheating.

The dimming control can be achieved by feeding a

PWM or analog signal into the Iset pin. The device can

be shut down by Enable low.

Battery Powered Devices

Digital Camera

PDA, MP3/4

GPS

Mobile Phone

Keyboard/Display Backlight

FEATURES

PIN CONFIGURATION(SOP – 8P)

PART MARKING

Low Cost LED Driver

Constant Current Output

Four Channels LED Driver Provides Matching

LED Current

Low Quiescent Current

Disconnects LEDs in Shutdown Mode

Thermal Shut Down Protection

Current Adjustable via external resistor

Dimming Control thru either Enable or Iset