器件名称:描述搜索:
产品TPS62740TI
描述

TPS6274x 是业界第一款降压转换器,此转换器特有典型值为 360nA 的静态电流,并且搭配微型 2.2µH 电感和 10µF 输出电容一起工作。 这款基于 DCS-Control™ 的全新器件将轻负载效率范围扩展至 10µA 负载电流以下。 TPS62740 支持高达 300mA 的输出电流,TPS62742 支持高达 400mA 的输出电流。 此器件由可再充电锂离子电池,锂化学电池(例如锂亚硫酰氯 (Li-SOC12),锂锰电池 (Li-MnO2) 和两节或三节碱性电池)供电运行。 输入电压范围高达 5.5V,也实现由 1 个 USB 端口和薄膜太阳能模块供电运行。 用户可使用 4 个 VSEL 引脚在 1.8V 至 3.3V 范围内选择输出电压(步长 100mV)。 TPS6274x 搭配使用小型输出电容,特有低输出纹波电压和低噪声。 一旦电池电压接近输出电压(接近 100% 占空比),此器件进入无纹波 100% 模式运行,以防止输出纹波电压的增加。 然后,此器件停止开关,并且输出被连接至输入电压。 集成转换率受控负载开关特有典型值为 0.6Ω 的导通电阻,并且将选择的输出电压分配至临时使用的子系统。 TPS6274 采用小型 12 引脚 2mm x 3mm2 WSON 封装,并且支持 31mm2 的总体解决方案尺寸。

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