Diodes PAM2810 - Manual

PAM2810
Document number: DSxxxxx Rev. 1 - 1
1 of 11
www.diodes.com
October 2012
© Diodes Incorporated
PAM2810
A Product Line of
Diodes Incorporated
4-CHANNEL PROGRAMMABLE LED CURRENT
Description
The PAM2810 provides 4 regulated current sinks, capable of sinking
up to 40mA current to accommodate 4 white LEDs. It requires no
charge pump, has no noise and EMI, and significantly improves the
efficiency in Li bettery range.
LED brightness can be controlled by PWM techniques. The constant
current sink is set with an external sense resistor.
Alternatively, a PWM signal applied to the EN pin can vary the
anticipated brightness of the LED. The device is in shut down mode
when the EN input is logic low.
The PAM2810 is available in SOT23-8 and DFN2mmx2mm
packages.
Features
• Cost Effective LED Driver
• Support up to 4 White LEDs
• Output Current up to 40mA per LED
• Low Dropout Voltage
• Ultra Low Quiescent Supply Current: 65 A (typ)
• No Noise and EMI
• Shutdown Current Less than 1 A
• Over Temperature Protection
• Small Packages : SOT23-8 and DFN2mmx2mm
• Pb-free Package
Pin Assignments
Applications
• White LED for LCD Display Backlights
• White LED Keypad Backlights
• 1-Cell Li-Ion Battery-operated Equipment Including:
ƒ
PDAs
ƒ Hand-Held PCs
ƒ Cellular Phone
Typical Applications Circuit