AHK3294 Four-Channel LED Driver

The AHK3294 is a linear current-sink LED driver, capable of driving one, two, three or four LEDs up to 30.2mA each. Featuring individual low resistance, low drop-out voltage current sinks, the AHK3294 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. Skyworks' 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 flexible control the maximum LED current of up to 30.2mA per channel is set via an external resistor. The AHK3294 is packaged in a Pb-free, 8 pin SC70JW package and is available over a -40 to +85OC temperature range.

技术特性

2.7V to 5.5V Input Supply Range
• Drives up to 4 LEDs at up to 30.2mA each
• Low-Dropout, Low Resistance Current Sinks
▪ Typically 40.5mV at Full Scale
• Linear LED Output Current Control
▪ S2Cwire Interface
• Single-wire
• 32 Steps
• External RSET Resistor
• ±10% LED Output Current Accuracy
• ±3% LED Output Current Matching
• Low Current Shutdown Mode
• Small 8-Pin SC70JW Package

订购信息 Ordering Information

AHK3294

应用领域 APPLICATION

Entry Level Mobile Phones
• Keyboard Backlight
• MP3 Players
• Indicator LEDs

AHK3294 典型应用

应用技术支持与电子电路设计开发资源下载	版本信息	大小
AHK3294 数据资料DataSheet下载:pdf	Rev.V2	2 页