General Description
The AHK3292 is a linear current-sink LED driver, capable of driving one or two LEDs up to 30.2mA each. Featuring individual low resistance, low drop-out voltage current sinks, the AHK3292 allows the LEDs to be regulated directly from a Lithium Ion/Polymer battery without the need for an additional step-up power supply, thereby reducing the external component count, eliminating switching noise and maximizing efficiency.
AnalogicTech’s Simple Serial Control™ (S2Cwire™) interface is used to enable, disable, and set the LED drive current for 32-level linear scale LED brightness control.
For maximum flexibility the LED current can be set, up to a maximum of 30.2mA per channel, using an external RSET resistor.
The AHK3292 is packaged in a Pb-free 6-pin SOT23 package and is available over a -40 to +85OC temperature range.
Features
• 2.7V to 5.5V Input Supply Range
• Drives up to 2 LEDs at up to 30.2mA each
• Low Resistance Current Sinks
? Low Dropout, Typically 40.5mV at Full Scale
• Linear LED Output Current Control
? S2Cwire Interface
• Single-wire
• 32 Steps
• ±10% LED Output Current Accuracy
• ±3% LED Output Current Matching
• Low Current Shutdown Mode
• Low Cost 6-pin SOT23 Package
Applications
• Entry Level Mobile Phones
• Indicator LEDs
• Keyboard Backlight
• MP3 Players
Click to view :
AHK3292.pdf
