雷竞技竞猜下载Allegro MicroSystems released for medium-sized LCD display backlighting of new type high power LED driver
January 26, 2010
雷竞技竞猜下载Allegro MicroSystems released for medium-sized LCD display backlighting of new type high power LED driver
January 26, 2010
All kinds of automobile application of ideal solution
In the city of Worcester- 雷竞技竞猜下载Allegro MicroSystems introduced for medium-sized LCD display backlighting, which has the function of the output disconnect new type of high power LED driver.The new device is used in automobile market ideal solution for various applications.Typical applications include in-car navigation systems, car infotainment system and backup camera show.Commercial version has to offer, can be used for industrial and consumer applications.
The AllegroA8501Integration of a boost converter and four 100 mA current absorber.LED tunnel can be combined with each other, support up to 400 mA current suction capacity.The device can be used 8 to 21 V single power supply work, and can withstand high voltage 40 V.The boost converter is constant frequency, current mode converter.
Operating frequency can be set to 2 MHz, so as to avoid interference AM radio spectrum in automotive applications.Integration of the booster DMOS rating of the switch to 40 V, 3.6 A.PWM light from the darkness control function which can realize ratio as high as 1000:1 LED current control.Additional 4:1 light from the darkness control may be achieved through the use of DIM pin. 作为众多保护功能的一项，A8501 可通过整合的输入断开开关提供输入连接器短路保护。它还具有可调过压保护 (OVP) 功能，可提供 LED 开路或短路以及 OVP 电阻或升压二极管开路保护。
The device adopts the SMT, 28 TSSOP package (suffix LP), exposed thermal pad in order to enhance heat dissipation.The product of the maximum working temperature of 125 ° C or 85 ° C, suitable for gas and/or industrial/consumer applications.This device is a lead-free products and fog pin box with 100% of suffix (T) and tin bismuth electroplating (suffix B).