MIC4834数据手册集成电路（IC）的照明镇流器控制器规格书PDF

描述 Description

The MIC4834 is a low noise dual electroluminescent (EL) panel driver used in backlighting applications. The MIC4834 converts a low DC voltage to a high DC voltage using a boost converter and then alternates the high DC voltage across the EL panels using an H-bridge. The MIC4834 incorporates internal wave-shaping circuitry specifically designed to reduce audible noise emitted by EL panels. With only one inductor the MIC4834 can drive two outputs and requires a minimum number of passive components. It features an operating input voltage range of 2.3V to 5.8V, making it suitable for 1-cell Li-Ion and 2- or 3-cell alkaline/NiCad/NiMH battery applications.The MIC4834 features separate oscillators for the boost and H-bridge stages. The boost frequency may be adjusted with an external resistor to optimize efficiency and brightness. The H-bridge frequency is internally preset to 225Hz, to reduce the number of external components and layout space.The MIC4834 is available in 10-pin 3mm x 3mm MLF® package as well as MSOP-10L, and has an operating junction temperature range of -40°C to +125°C.

Please consider this deviceMIC4833

特性 Features

• Drives two EL panels, up to 3in² each at full brightness
• 220VPP regulated AC output waveform
• 2.3V to 5.8V DC input voltage
• Wave-shaping circuit to reduce audible noise
• Adjustable boost converter frequency
• Single inductor to power both panels
• 0.1µA typical shutdown current
• Package options:
• 10-pin 3mm x 3mm MLF®
• 10-pin MSOP
• -40°C to +125°C junction temperature range

简介

MIC4834属于集成电路（IC）的照明镇流器控制器。由制造生产的MIC4834照明，镇流器控制器此产品族中的产品可用于实现控制和调节功能。对于日光灯、电致发光灯和 HID 灯等非 LED 照明工具的正常工作，这些功能很有必要或十分有用。既定器件所具备的特定功能集因预期用途各异，并且所供应的产品可能包括相应资源以直接控制驱动负载的电源，也可能不包括这些资源。