面向WCDMA应用的微功率同步降压-升压型DC/DC转换器

LTC3444是一款高效、固定频率、降压-升压DC/DC转换器，采用高于、低于或等于输出电压的输入电压工作。该IC所运用的拓扑可提供所有操作模式之间的连续转换功能，从而使得该产品非常适合输出电压可在很宽范围内变化的单节锂离子电池或多节电池应用。\n\n LTC3444专为在3G WCDMA应用中使用进行了优化。一种独特的设计可在非常低的输出电压条件下实现高效率，同时消除了外部组件。高速误差放大器提供了将RF功率放大器从待机转换至发射和从发射转换至待机功率水平所需的快速瞬态响应。输出过压保护功能负责保护RF功率放大器。\n\n 工作频率在内部设置为1.5MHz，以尽可能缩小外 • 针对 WCDMA 手机的优化特性\n\n• 可在输入电压高于、低于或等于输出电压的情况下提供稳定的输出\n\n• 0.5V 至 5V 输出范围\n\n• 可采用单节锂离子电池提供高达 400mA 的连续输出电流\n\n• 极少的外部组件\n\n• 1.5MHz 固定频率操作\n\n• 内部环路补偿用于实现快速响应 < 25μs 全标度输出转换；COUT 4.7μF\n\n• 在停机模式中提供真正的断接\n\n• 2.75V 至 5.5V 输入\n\n• <1μA 停机电流\n\n• 内部软启动\n\n• 输出过压保护\n\n• 单电感器，无需肖特基二极管\n\n• 小外形的耐热性能增强型 ;

High Effi ciency, Synchronous, 4-Switch Buck-Boost Controller

文件：392.38 Kbytes Page：28 Pages

Micropower Synchronous Buck-Boost DC/DC Converter for WCDMA Applications

文件：209.21 Kbytes Page：20 Pages

Micropower Synchronous Buck-Boost DC/DC Converter

文件：342.44 Kbytes Page：16 Pages

Micropower Synchronous Buck-Boost DC/DC Converter for WCDMA Applications

文件：214.95 Kbytes Page：20 Pages

Micropower Synchronous Buck-Boost DC/DC Converter for WCDMA Applications

文件：214.95 Kbytes Page：20 Pages

Micropower Synchronous Buck-Boost DC/DC Converter for WCDMA Applications

文件：209.21 Kbytes Page：20 Pages

封装/外壳：8-WFDFN 裸露焊盘 包装：管件 描述：IC REG CONV WCDMA 1OUT 8DFN 集成电路（IC） 特殊用途稳压器

封装/外壳：8-WFDFN 裸露焊盘 包装：卷带（TR） 描述：IC REG CONV WCDMA 1OUT 8DFN 集成电路（IC） 特殊用途稳压器

짹15kV ESD-Protected, 짹60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers

General Description The MAX3440E–MAX3444E fault-protected RS-485 and J1708 transceivers feature ±60V protection from signal faults on communication bus lines. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1

짹15kV ESD-Protected, 짹60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers

General Description The MAX3440E–MAX3444E fault-protected RS-485 and J1708 transceivers feature ±60V protection from signal faults on communication bus lines. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1

짹15kV ESD-Protected, 짹60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers

General Description The MAX3440E–MAX3444E fault-protected RS-485 and J1708 transceivers feature ±60V protection from signal faults on communication bus lines. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1

짹15kV ESD-Protected, 짹60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers

General Description The MAX3440E–MAX3444E fault-protected RS-485 and J1708 transceivers feature ±60V protection from signal faults on communication bus lines. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1

짹15kV ESD-Protected, 짹60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers

General Description The MAX3440E–MAX3444E fault-protected RS-485 and J1708 transceivers feature ±60V protection from signal faults on communication bus lines. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1