AP8802H中文资料medium-voltage-dc-dc-led-drivers数据手册Diodes规格书

描述 Description

The AP8802H is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to fifteen LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 8V to 60V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AP8802H switches at frequency up to 500kHz. This allows the use of small size external components, hence minimizing the PCB area needed. Maximum output current of AP8802H 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 0.2V or lower at CTRL shuts down the output at SW and puts the device into a low-current standby state.

特性 Features

LED driving current up to 1A
High efficiency up to 95%
Operating input voltage up to 60V
5% nominal accuracy
High switching frequency up to 700kHz
PWM/DC input for dimming control
Built-in output open-circuit protection
SO-8EP is available in “Green” Molding Compound (No Br, Sb)
Lead Free Finish/ RoHS Compliant

应用 Application

Commercial/industrial illumination
Street lights
Commercial refrigerators/freezers
Appliances interior lighting
Architecture Detail lighting

简介

AP8802H属于集成电路（IC）的LED驱动器。由Diodes制造生产的AP8802HLED 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。