Datenblatt-Suchmaschine für elektronische Bauteile |
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AD8240YRM-REEL7 Datenblatt(PDF) 9 Page - Analog Devices |
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AD8240YRM-REEL7 Datenblatt(HTML) 9 Page - Analog Devices |
9 / 12 page AD8240 Rev. 0 | Page 9 of 12 As a result, the constant voltage driving/monitoring method is the lowest cost and least-prone-to-failure method for driving and monitoring LEDs from a system perspective. This is primarily because the number of wires and connections can be minimized. By using a constant voltage driver and measuring the current, an LED lamp can be driven and monitored using only two wires (power and ground). In many cases, this can be reduced to one wire when the chassis or shared ground return is used. This is a similar architecture used with incandescent bulbs, which means no changes to the wiring harness are necessary with this LED implementation. Most automotive platforms no longer use a switch on the dashboard to directly control the incandescent lamps. These lamps are now controlled and driven by the body control ECU. By using this constant voltage architecture, the control and drive function for the LEDs can remain in the ECU with minimal design modification. Constant voltage driving/monitoring is a proven method already in use in a number of automotive platforms to drive LED tail, running, and turn-indicator lamps. The AD8240 LED lamp driver/monitor is designed for use in the body control or related module. When used this way, it is very similar to the method that has been used to control external incandescent lamps. By utilizing the existing lamp driving architecture, additional modules are not required to drive the external lamps, which further minimizes the cost. It is possible to retrofit existing lamp driving modules with the AD8240 with minimal engineering time required. |
Ähnliche Teilenummer - AD8240YRM-REEL7 |
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Ähnliche Beschreibung - AD8240YRM-REEL7 |
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