Diodes PAM2811 - Manual

PAM2811
Document number: DSxxxxx Rev. 1 - 0
1 of 13
www.diodes.com
November 2012
© Diodes Incorporated
PAM2811
A Product Line of
Diodes Incorporated
4-CHANNEL SINGLE-WIRE DIMMING LED DRIVE
with ULTRA LOW DROPOUT CURRENT SINK
Description
The PAM2811 provides 4 regulated current sinks, capable of sinking
up to 20mA current to accommodate 4 white LEDs. It requires no
charge pump, has no noise and EMI, and significantly improves the
efficiency in Li battery range.
LED brightness can be controlled by single-wire dimming
techniques. The constant current sink is set by16-step.
The PAM2811 is available in QFN3x3-16L, MSOP-8L, SOT23-8L
and DFN2x2-8L packages.
Features
 Support up to 4 LEDs
 LED Sink Current 20mA
 Low Dropout Voltage
 Low Quiescent Supply Current:270µA(typ)
 No Noise and EMI
 Shutdown Current Less than 1µA
 Over Temperature Protection
 16-Step Brightness Control
 Small Package: QFN3x3-16L,MSOP-8L SOT23-8L,
DFN2X2-8L
 Pb-free Package
Applications
 Mobile Phone
 Digital Camera
 PDA MP3
Pin Assignments
Typical Applications Circuit