描述：LP8861QPWPRQ1
LP8861QPWPRQ1是一款汽车高效、低 EMI、易于使用的 LED 驱动器，具有集成升压/SEPIC 转换器。它具有四个高精度可提供高调光比的电流吸收器使用 PWM 输入信号进行亮度控制。升压/SEPIC 转换器具有自适应输出基于 LED 电流吸收器的电压控制裕量电压。此功能可最大限度地降低功耗通过将电压调整到最低来消耗在所有条件下都有足够的水平。升压/SEPIC转换器支持用于切换的扩频频率和外部同步专用引脚。宽范围可调频率允许LP8861QPWPRQ1避免对 AM 的干扰无线电频段。
LP8861QPWPRQ1具有驱动外部 pFET 的选项，以断开输入电源与系统的连接发生故障并减少浪涌电流和待机功耗。该装置可以减少基于温度测量的 LED 电流外部 NTC 传感器可防止 LED 过热并延长 LED 寿命。
LP8861QPWPRQ1的输入电压范围从4.5 V 至 40 V 以支持汽车停止/启动和负载突降条件。LP8861QPWPRQ1集成了广泛的故障检测和保护功能。
特征：LP8861QPWPRQ1
1• 符合汽车应用要求
• AECQ100 符合以下结果：
– 器件温度等级 1：–40°C 至
+125°C 环境工作温度
• 输入电压工作范围 4.5V 至 40V
• 四个高精度电流吸收器
– 当前匹配 1%（典型）
– LED 串电流高达 100 mA/通道
– 100 Hz 时的调光比为 10 000:1
• 用于 LED 灯串的集成升压/SEPIC 转换器
力量
– 输出电压高达 45 V
– 开关频率 300 kHz 至 2.2 MHz
– 切换同步输入
– 扩频以降低 EMI
• 针对浪涌电流的电力线 FET 控制
保护和待机节能
• 广泛的故障检测和容错功能
– 故障输出
– 输入电压 OVP、UVLO 和 OCP
– 开路和短路 LED 故障检测
– 自动 LED 电流减少
外部温度传感器
– 热关机
• 最少外部组件数
2 应用：LP8861QPWPRQ1
• 背光：
– 汽车信息娱乐
– 汽车仪表组
– 智能镜子
– 平视显示器（HUD）
– 中央信息显示 (CID)
– 音视频导航 (AVN)
制造商：德州仪器
产品种类:LED照明驱动器
RoHS：详细信息
通道数量：4通道
输出电流：100 mA
输入电压：4.5V～40V
工作频率：2.2 MHz
电源电流—电压：12 mA
最小工作温度：- 40 C
最大工作温度：+ 125 C
安装风格:SMD/SMT
封装/箱体：HTSSOP-20
资格：AEC-Q100
系列：LP8861QPWPRQ1
封装：切割胶带
封装：鼠标卷轴
封装：卷轴
特点：可调开关频率、升压同步、故障检测、电力线FET、Sepic同步、扩频
高度：1.1 mm
长度：6.5 毫米
工作温度范围：- 40 C to + 125 C
输出类型：恒流
产品：LED驱动器
类型：LED驱动
宽度：4.4 毫米
商标：德州仪器
拓扑结构:Boost/SEPIC
步步：是
产品类型：LED 照明驱动器
工厂包装数量：2000
子类别:驱动IC
单位重量:191 毫克
以下物料均有现货库存：LP8861QPWPRQ1
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