6串43V含升压调节器的白光LED驱动器

RT4530A 是高效率的白光 LED 驱动器，设计用于驱动作为 LCD 屏光源的 LED 数组。集成了功率开关的电流模式 Boost 转换器可驱动6串并联连接的 LED 串，每串可有多达10只 LED 连接在一起。每个内置电流源支持最大 ±2% 的电流误差，确保每串 LED 都有优异的亮度一致性。为了提供足够的操作余量给每个电流源， Boost 控制器对每个回馈端子进行监控并调节至最优化之输出电压以获取最好之效率。
RT4530A 可以 2.5V~24V 之宽阔的输入电压范围输出 5mA~50mA 可调之电流，内部 200mΩ、43V功率开关以电流模式控制方式提供逐周期过流保 ·宽输入电压范围：2.5V~24V\n·高输出电压：VOUT 高达 43V\n·电流模式升压调节器►600kHz~1.2MHz开关频率►频率高达85%\n·可调节电流范围：5mA~50mA ；匹配误差：2%\n·通道电流调整精度：±3.5%\n·调光控制►直接 PWM 调光频率高达 20kHz，最小导通时间为500ns►PWM 转“模拟+PWM”混合式调光，信号频率可高达 20kHz，最高分辨率可达8位\n·内置软启动功能\n·关机状态下 LED 通道处于断开状态\n·保护功能►LED 串开路保护►电流限制保护►可调节过压保护►过温保护\n·薄型20引脚 UQFN 封装;

Richtek

立锜科技

30V, 300mA Output Micropower Step-Down Switching Regulator

Description The SC453 IC is a single chip high-performance Hysteretic PWM controller. With its integrated SmartDriver™, it pow ers advanced graphics and core processors. It provides sleep mode and boot voltage support. Automatic power save is present to prevent negative current flow in the l

文件：1.1142 Mbytes 页数：23 Pages

SEMTECH

先之科

30V, 300mA Output Micropower Step-Down Switching Regulator

Description The SC453 IC is a single chip high-performance Hysteretic PWM controller. With its integrated SmartDriver™, it pow ers advanced graphics and core processors. It provides sleep mode and boot voltage support. Automatic power save is present to prevent negative current flow in the l

文件：1.1142 Mbytes 页数：23 Pages

SEMTECH

先之科

30V, 300mA Output Micropower Step-Down Switching Regulator

Description The SC453 IC is a single chip high-performance Hysteretic PWM controller. With its integrated SmartDriver™, it pow ers advanced graphics and core processors. It provides sleep mode and boot voltage support. Automatic power save is present to prevent negative current flow in the l

文件：1.1142 Mbytes 页数：23 Pages

SEMTECH

先之科