2.5MHz/1.5MHz Step-Down Converters with 60m ohm Bypass in TDFN for CDMA PA Power

General Description The MAX8581/MAX8582 high-frequency step-down converters are optimized for dynamically powering the power amplifier (PA) in CDMA handsets. They integrate a highefficiency PWM step-down converter for medium- and low-power transmission and a 60m? (typ) bypass mode to power the PA

文件：263.88 Kbytes 頁數(shù)：9 Pages

MAXIM

美信

2.5MHz/1.5MHz降壓型轉(zhuǎn)換器，具有60mΩ旁路開關(guān)，采用TDFN封裝，用于CDMA PA供電

MAX8581/MAX8582高效降壓轉(zhuǎn)換器專門針對(duì)CDMA手持設(shè)備中功率放大器(PA)的動(dòng)態(tài)供電進(jìn)行優(yōu)化。器件集成了高效PWM降壓轉(zhuǎn)換器，可以用于中等/低功率傳輸；而60mΩ (典型值)的旁路模式可以用于大功率傳輸時(shí)由電池直接為PA供電。器件可通過外部DAC驅(qū)動(dòng)模擬輸入，以線性控制輸出電壓，實(shí)現(xiàn)PA功率的連續(xù)調(diào)節(jié)。MAX8581/MAX8582采用外部反饋網(wǎng)絡(luò)，開關(guān)頻率分別被內(nèi)部設(shè)置到2.5MHz和1.5MHz。\n\n 快速的開關(guān)頻率(高達(dá)2.5MHz)以及快速的軟啟動(dòng)允許采用2.2μF的輸入和輸出陶瓷電容，同時(shí)也保證低電壓紋波。優(yōu)化后可采用1.5μH至3.3μH的小尺寸電感，保 ? 600mA降壓轉(zhuǎn)換器\n? 0.4V至VIN動(dòng)態(tài)可調(diào)輸出\n? 小尺寸LC元件：1.5μH至3.3μH，以及2.2μF\n? 所有負(fù)載條件下，均具有較低的輸出紋波\n? 0.1μA關(guān)斷模式\n? 熱關(guān)斷\n? 10引腳、3mm x 3mm TDFN封裝;

ADI

亞德諾

2.5MHz/1.5MHz Step-Down Converters with 60m ohm Bypass in TDFN for CDMA PA Power

General Description The MAX8581/MAX8582 high-frequency step-down converters are optimized for dynamically powering the power amplifier (PA) in CDMA handsets. They integrate a highefficiency PWM step-down converter for medium- and low-power transmission and a 60m? (typ) bypass mode to power the PA

文件：263.88 Kbytes 頁數(shù)：9 Pages

MAXIM

美信

2.5MHz/1.5MHz Step-Down Converters with 60m廓 Bypass in TDFN for CDMA PA Power

文件：562.48 Kbytes 頁數(shù)：10 Pages

MAXIM

美信

2.5MHz/1.5MHz Step-Down Converters with 60m廓 Bypass in TDFN for CDMA PA Power

文件：562.48 Kbytes 頁數(shù)：10 Pages

MAXIM

美信

Package：10-WFDFN 裸露焊盤；包裝：托盤 功能：降頻器 類別：RF/IF，射頻/中頻和 RFID RF 其它 IC 和模塊 描述：IC CONV 2.5MHZ CDMA 10-TDFN

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