The ADP8866 combines a programmable backlight LED charge pump driver with automatic blinking functions. Nine LED drivers can be independently programmed at currents up to 25 mA. The current level, fade time, and blinking rate can be programmed once and executed autonomously on a loop. Separate fade in and out times can be set for the backlight LEDs.
Driving all of this is a two capacitor charge pump with gains of 1×, 1.5×, and 2×. This setup is capable of driving a maximum IOUT of 240 mA from a supply of 2.5 V to 5.5 V. A full suite of safety features including short-circuit, overvoltage, and over-temperature protection allow easy implementation of a safe and robust design. Additionally, input inrush currents are limited via an integrated soft start combined with controlled input to output isolation.
|Title||Content Type||File Type|
|ADP8866: Charge Pump Driven 9-Channel LED Driver with Automated LED Lighting Effects (Rev 0, 04/2011) (pdf, 894 kB)||Data Sheets|
Isolating Power in Communication Bus and Gate Drive Applications
Starting with a communications application overview of small power options through the process of selecting the right power products this webcast is a great resource for your communications applications designs.
Low-Voltage Current Sink Controls High-Voltage LED String
Discusses how a single programmable LED driver can be combined with a low-cost boost converter to achieve a flexible, high-efficiency, easy-to-program solution.
Activate Cell Phone Indicator LEDs While Preserving Standby Time
Discusses how cell phone manufacturers can provide status LEDs that can alert users to messages waiting, impending calendar appointments, and other notifications while the phone is in standby and keeping total standby consumption low.
|Analog Devices' Programmable LED Driver Enables Independent Control of Nine LED Sinks (21 Apr 2011)||Press Releases||HTML|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.