Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs

General Description The RT8249A/B/C is a dual-channel step-down, controller generating supply voltages for battery-powered systems. It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear regulators. Each linear regulator provides up t

含 5V/3.3V LDO 的双通道同步 Buck 控制器

RT8249A/B/C 是双通道 Buck 控制器，用于为电池供电的系统生成稳定的电压。其中包含两组输出电压 2V~5.5V 可调的 PWM 控制器和两组恒定 5V/3.3V 输出的线性稳压器，每组线性稳压器可输出最大 100mA 的电流，3.3V 线性稳压器在输出电流低于 35mA 时的稳压精度可达 1%。RT8249A/B 包含一个可用于外部电荷泵电路的振荡器输出，RT8249C 则提供了一个模式选择引脚 SKIPSEL 用于选择二极管仿真模式（DEM）或音频避开模式（ASM）。它们具有集成化的上电时序控制功能、Power Good 输出、内部软起动功能和防止关机以后出现负压的输出 •支持超级本的连接待机模式\n•PWM 最大责任周期 > 98%\n• 双通道可调节输出:\n•5V/3.3V LDO 具有 100mA 输出能力\n•振荡器输出可供电荷泵电路使用\n•内部软启动和软放电\n•独立控制器使能控制\n•非锁定的 UVLO\n•20引脚 WQFN 封装\n•符合 RoHS 规范，不含卤素;

丝印代码：2Q；Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs

General Description The RT8249A/B/C is a dual-channel step-down, controller generating supply voltages for battery-powered systems. It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear regulators. Each linear regulator provides up t

Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs

文件：252.86 Kbytes Page：21 Pages

Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs

文件：252.86 Kbytes Page：21 Pages

Side-on PMT

Photosensor Modules The H8249 series photosensor modules incorporate a 28-mm (1-1/8) diameter side-on photomultiplier tube, a high-voltage power supply circuit and a low noise amplifier. Two types of amplifiers are available with a current-to-voltage conversion factor of 1 V/µA or 0.1 V/µA and a

VOLTAGE MONITORING IC WITH CELL BALANCING FUNCTION

文件：2.00274 Mbytes Page：23 Pages