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LP5522 Datasheet(PDF) 6 Page - Texas Instruments |
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LP5522 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 17 page  LP5522 SNVS488 – JUNE 2007 www.ti.com TRAINING: In Training mode new blinking sequence can be programmed. LED output follows CTRL signal during the programming TSD: If chip temperature rises above 160°C (typ.) device goes into Thermal Shut Down (TSD) mode. In TSD mode output is disabled but supporting functions are on. LED Driver Operational Description The LP5522 LED driver is constant current source. Current can be set with external resistor (RISET) so that the current ratio between resistor and LED is 1:400. RISET current correlates to ISET reference voltage (VISET). Consequently, current through LED can be adjusted using equation IOUT = 480/RISET. Use of external resistor is optional. If external resistor is not connected, default output current is 5 mA. When external resistor is not used ISET pin should be connected to VDD. 6 Submit Documentation Feedback Copyright © 2007, Texas Instruments Incorporated Product Folder Links: LP5522 |
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