AL8807Q中文资料medium-voltage-dc-dc-led-drivers数据手册Diodes规格书

描述 Description

The AL8807Q is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 9 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 30V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AL8807Q switches at frequency up to 1MHz with controlled rise and fall times to reduce EMI. This allows the use of small size external components, hence minimizing the PCB area needed.

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\tMaximum output current of AL8807Q is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.4V or lower at CTRL switches off the output MOSFET simplifying PWM dimming.

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\tThe AL8807Q has been qualified to AEC-Q100 Grade 1 and is Automotive Grade supporting PPAPs.

特性 Features

LED driving current up to 1.3A
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\t\tBetter than 5% accuracy
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\t\tHigh efficiency up to 96%
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\t\tOptimally controlled switching speeds
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\t\tOperating input voltage from 6V to 30V
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\t\tPWM/DC input for dimming control
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\t\tBuilt-in output open-circuit protection
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\t\tAutomotive Grade with AEC-Q100 Qualification
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\t\tMSOP-8EP: Available in “Green” Molding Compound (No Br, Sb)
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\t\t\t\tTotally Lead-Free & Fully RoHS Compliant 
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\t\t\t\tHalogen and Antimony Free. “Green” Device
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\t\tAutomotive Grade
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\t\t\t\tQualified to AEC-Q100 Standards for High Reliability
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\t\t\t\tPPAP Capable

应用 Application

Automotive Interior LED Lamps
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\t\tAutomotive Exterior LED Lamps

简介

AL8807Q属于集成电路（IC）的LED驱动器。由制造生产的AL8807QLED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。