STMicroelectronics <span style='color:red'>ALED7709</span> Automotive LED Drivers
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STMicroelectronics ALED7709 Automotive LED Drivers

　　STMicroelectronics ALED7709 Automotive LED Drivers are AEC-Q100 Grade1 qualified and combine a boost/SEPIC controller and four low-side constant-current sinkers. The STMicroelectronics ALED7709 is designed to drive strings of high-brightness LEDs. The switching converter section provides the supply rail for the LED strings, whose value is constantly optimized for maximum efficiency. The boost/SEPIC controller supports the external synchronization and spread spectrum.　　FEATURES　　AEC-Q100 Grade1 qualified　　Operating temperature range -40°C < TJ < 150°C　　4.5V to 42V operating input voltage range　　Up to 60V tolerant for load dump @ 24V battery　　Supports battery cranking events down to 4V supply　　Simultaneous or exclusive control by PWMI and I2C interface　　Switching controller section　　Low shutdown current ISHDN < 15?A　　Fixed frequency peak current-mode controller　　Cycle-by-cycle power switch OCP　　Adjustable (250kHz to 2.2MHz) switching frequency with optional spread spectrum　　Synchronized boost and SEPIC topologies support　　Line switch control for standby power saving and inrush current protection　　Input overvoltage and output short-circuit protection　　LED strings control section　　4 x 40V rated constant current outputs　　Adjustable up to 200mA per channel　　±2% typ. output current accuracy　　Mixed PWM and Analog dimming　　100Hz to 12.8kHz dimming frequency　　Dimming ratio 10000:1 at 100Hz　　LED temperature sensor (NTC) management　　Selectable channels phase-shifting and adjustable Rise/Fall time for reducing EMI　　Open channel, LED short-circuit detection　　Two versions are available ALED7709A and ALED7709B　　APPLICATIONS　　Automotive lighting and backlighting　　Cluster/infotainment display　　Head-Up Display (HUD)　　Instrument lighting system　　Ambient light
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Release time：2023-04-07 11:39 reading：1957 Continue reading>>

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