AP3031中文资料led-drivers-for-displays-backlights数据手册Diodes规格书

描述 Description

The AP3031 is an inductor-based DC/DC boost converter designed to drive °C arrays. 1.4A switching current allows AP3031 to be used in different 7' to 10' LCD panel backlights (3*13 °C arrays typically). A constant frequency 1MHz PWM control scheme is employed in this IC, which means tiny external components can be used. Specifically, 1mm tall 4.7μH inductor and 0.47μF output capacitor for the typical application is sufficient. The over output voltage protection is equipped in AP3031, which protects the IC under open load condition. The AP3031 includes UVLO, soft-start, current limit and OTSD to protect the circuit.

特性 Features

Up to 92% Efficiency (VIN=9V, IOUT=260mA)
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\t\tUp to 84% Efficiency (VIN=5V, IOUT=260mA)
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\t\tFast 1MHz Switching Frequency
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\t\tWide Input Voltage Range: 2.7V to 16V
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\t\tLow 200mV Feedback Voltage
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\t\tOutput Over Voltage Protection
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\t\tCycle by Cycle Current Limit: 1.4A
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\t\tBuilt-in Soft-start
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\t\tBuilt-in Standby Mode to Achieve High Frequency PWM Dimming
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\t\tBuilt-in Thermal Shutdown Function
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\t\tUnder Voltage Lockout

应用 Application

7' to 10' LCD Panels
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\t\tDigital Photo Frame
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\t\tGPS Receiver
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\t\tEPC
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\t\tPDVD

简介

AP3031属于集成电路（IC）的LED驱动器。由制造生产的AP3031LED 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。