LP5522 - National Semiconductor

LP5522 Programmable LED Driver

The LP5522 is a simple single wire programmable LED controller in six bump micro SMD package. It provides constant current flow through high side driver. Output current can be set from 1 mA to 20 mA by using an external resistor on the ISET pin. If no external resistor is used, output current is set to 5 mA default current. The LP5522 is controlled using onl.

Features

■ Programmable blinking sequence — — — — 1 to 3 programmable pulses 1 ms to 255 ms LED on time 10 ms to 2500 ms LED off time Single or continuous run of programmed blinking sequence Constant current high side output driver Adjustable current with external resistor 0.2 uA typical shutdown current Autonomous operation without external clock Micro SMD-6 package with 0.4 mm pitch: 1.215 mm x 0.815 mm x 0.6 mm (LxWxH)
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■ Applications
■ Indicator lights
■ Phone cosmetics
■ Toys Typical Application 20217201 © 2007 National Semiconductor Corporation 202172 www.national.com LP5522 Conne.