LV8498CT中文资料Motor Driver, Constant Current, Control Voice Coil数据手册ONSEMI规格书

描述 Description

The LV8498CT is a constant current driver IC for voice coil motors that supports I2C control integrating a digital/analog converter (DAC). It uses an ultraminiature WLP package and includes a current detection resistor for constant current control, which makes the IC ideal for miniaturization of camera modules intended for use in camera-equipped mobile phones. The output transistor has a low on-resistance of 1 Ω and the resistance of the built-in current detection resistor is 1 Ω, which minimizes the voltage loss and helps withstand voltage drop in VCC. The function is incorporated, which, by changing the current in a stepped pattern while taking time at rise and fall of the output current, provides the current a slope, improving the converging stability of the voice coil motor (current slope function).

特性 Features

• I2C bus control supported.
• Easy control
• Wide operating voltage range (2.2 to 5.0V).
• Wide power supply application
• Built-in current detection resistor.
• Current limit protection
• 6-pin WLP package used (1.270.870.25mm).
• Small mounting space
• Built-in voltage drop protection circuit (VCC = 2V output off).
• Voltage drop protection
• Built-in thermal protection circuit.
• Thermal protection
• Constant current control enabled by 10bit DAC
• Improving the converging stability of the AF-VCM
• Less External Component
• Simple Design
• Stand-by current: 0A
• Low consumption
• Constant current driver for voice coil motors.
• Low output block total-resistance of 2Ω helps withstand voltage drop in VCC. (Current detection resistance + outputtransistor on-resistance).
• Built-in VCM overshoot preventive function (current slope function).
• Power supply Voltage: 2.2 to 5.0V

应用 Application

• Portable & Wireless
• Feature Phone
• Smartphone
• Tablet
• Camera for mobile phone
• Pocket movie Camera

简介

LV8498CT属于开发板套件编程器的评估演示板及套件。由制造生产的LV8498CT评估和演示板及套件该系列产品提供了一种方便的方法，在经过验证的实施环境中评估某些重点器件的性能或特性。评估方法通常有完善的文档说明，并且视乎具体情况由评估软件提供支持。产品通常由印刷电路板组成，板上已装有重点器件以及必要或有用的支持元器件，另外也可能包括其他组件，例如电缆或电源。对于数量特别多或类别独特的器件类别(如 ADC、DAC 和开关模式电源)，评估平台可组合为一个单独的产品系列。