500kHz Multi-Output Power-Supply Controllers with High Impedance in Shutdown

General Description The MAX8741/MAX8742 are buck-topology, step-down, switch-mode, power-supply controllers that generate logic-supply voltages in battery-powered systems. These high-performance, dual/triple-output devices include on-board power-up sequencing, power-good signaling with delay, dig

文件：1.00004 Mbytes 頁數(shù)：33 Pages

MAXIM

美信

500kHz、多輸出電源控制器，關斷狀態(tài)下提供高阻

MAX8741/MAX8742是buck拓撲結構、降壓型、開關模式電源控制器，可以在電池供電系統(tǒng)中產(chǎn)生邏輯電源電壓。這兩款高性能、雙輸出/三輸出器件具有片上上電順序控制、帶延時的電源良好信號指示、數(shù)字軟啟動、次級線圈控制、低壓差電路、內部頻率補償網(wǎng)絡和自舉等功能。\n\n 通過同步整流和Maxim專有的Idle Mode?控制方案，可以實現(xiàn)97%的效率。效率在1000:1的負載電流范圍內都大于80%，這可以在系統(tǒng)掛起或待機模式下延長電池壽命。優(yōu)秀的動態(tài)響應能夠在5個時鐘周期內糾正輸出負載瞬變狀態(tài)。片上1A的強柵級驅動器確保了外部n溝道MOSFET的快速開關。\n\n ? 97%的效率\n? 4.2V至30V輸入范圍\n? 2.5V至5.5V雙可調電壓輸出\n? 可選擇的3.3V和5V固定電壓或可調節(jié)電壓輸出(Dual Mode?)\n? 12V線性穩(wěn)壓器\n? 可調節(jié)次級反饋(MAX8741)\n? 5V/50mA線性穩(wěn)壓器輸出\n? 精確的2.5V參考輸出\n? 可設定的上電順序\n? 電源良好(/RESET)輸出\n? 輸出過壓保護\n? 輸出欠壓關斷\n? 333kHz/500kHz低噪聲、固定頻率工作\n? 低壓差, 98%占空比工作\n? 2.5mW典型靜態(tài)功耗(12V輸入，兩個SMPS都開啟)\n? 4μA典型關斷電流;

ADI

亞德諾

500kHz Multi-Output Power-Supply Controllers with High Impedance in Shutdown

General Description The MAX8741/MAX8742 are buck-topology, step-down, switch-mode, power-supply controllers that generate logic-supply voltages in battery-powered systems. These high-performance, dual/triple-output devices include on-board power-up sequencing, power-good signaling with delay, dig

文件：1.00004 Mbytes 頁數(shù)：33 Pages

MAXIM

美信

500kHz Multi-Output Power-Supply Controllers with High Impedance in Shutdown

General Description The MAX8741/MAX8742 are buck-topology, step-down, switch-mode, power-supply controllers that generate logic-supply voltages in battery-powered systems. These high-performance, dual/triple-output devices include on-board power-up sequencing, power-good signaling with delay, dig

文件：1.00004 Mbytes 頁數(shù)：33 Pages

MAXIM

美信

Package：28-SSOP（0.209"，5.30mm 寬）；包裝：卷帶（TR） 類別：集成電路（IC） 特殊用途穩(wěn)壓器 描述：IC REG CTRLR NOTEBK 3OUT 28SSOP

AD

亞德諾

Package：28-SSOP（0.209"，5.30mm 寬）；包裝：卷帶（TR）剪切帶（CT）Digi-Reel? 得捷定制卷帶 類別：集成電路（IC） 特殊用途穩(wěn)壓器 描述：IC REG CTRLR NOTEBK 2OUT 28SSOP

AD

亞德諾