Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

文件：288.49 Kbytes 頁(yè)數(shù)：29 Pages

MAXIM

美信

Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

General Description The MAX1630A–MAX1635A are buck-topology, step down, switch-mode, power-supply controllers that gener ate logic-supply voltages in battery-powered systems. These high-performance, dual-/triple-output devices include on-board power-up sequencing, power-good signaling with d

文件：288.49 Kbytes 頁(yè)數(shù)：29 Pages

MAXIM

美信

Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

General Description The MAX1630A–MAX1635A are buck-topology, step down, switch-mode, power-supply controllers that gener ate logic-supply voltages in battery-powered systems. These high-performance, dual-/triple-output devices include on-board power-up sequencing, power-good signaling with d

文件：288.49 Kbytes 頁(yè)數(shù)：29 Pages

MAXIM

美信

多輸出、低噪聲電源控制器，用于筆記本電腦

MAX1630A–MAX1635A是buck拓?fù)浣Y(jié)構(gòu)、降壓型、開(kāi)關(guān)模式電源控制器，可以在電池供電系統(tǒng)中產(chǎn)生邏輯電源電壓。這些高性能、雙路/三路輸出器件具有片上順序上電控制、帶有延時(shí)的電源就緒信號(hào)、數(shù)字軟啟動(dòng)、次級(jí)線圈控制、低壓差穩(wěn)壓電路、內(nèi)部頻率補(bǔ)償網(wǎng)絡(luò)以及自舉等功能。\n 通過(guò)同步整流和Maxim專利的Idle Mode?控制方案，可以實(shí)現(xiàn)高達(dá)96%的效率。在1000:1的負(fù)載電流范圍內(nèi)效率都高于80%，這可在系統(tǒng)掛起或待機(jī)模式下延長(zhǎng)電池壽命。優(yōu)異的動(dòng)態(tài)響應(yīng)能夠在5個(gè)300kHz時(shí)鐘周期內(nèi)修正由最新動(dòng)態(tài)時(shí)鐘CPU引起的輸出負(fù)載瞬變。片上強(qiáng)大的1A柵級(jí)驅(qū)動(dòng)器確保了外部n溝道MO \n? 效率高達(dá)96% \n? +4.2V至+30V輸入電壓范圍 \n? 2.5V至5.5V雙可調(diào)電壓輸出 \n? 可選的3.3V和5V固定電壓或可調(diào)整輸出(Dual Mode?) \n? 12V線性穩(wěn)壓器 \n? 可調(diào)整次級(jí)反饋(MAX1631A/MAX1634A) \n? 5V/50mA線性穩(wěn)壓器輸出 \n? 精密的2.5V基準(zhǔn)輸出 \n? 可編程上電順序 \n? 電源就緒(/RESET)輸出 \n? 輸出過(guò)壓保護(hù)(MAX1630A/MAX1631A/MAX1632A) \n? 輸出欠壓關(guān)斷(MAX1630A/MAX1631A/MAX1632A) \n? 200kHz/300kHz;

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