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

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500kHz、多输出电源控制器，关断状态下提供高阻

MAX8741/MAX8742是buck拓扑结构、降压型、开关模式电源控制器，可以在电池供电系统中产生逻辑电源电压。这两款高性能、双输出/三输出器件具有片上上电顺序控制、带延时的电源良好信号指示、数字软启动、次级线圈控制、低压差电路、内部频率补偿网络和自举等功能。\n 通过同步整流和Maxim专有的Idle Mode™控制方案，可以实现97%的效率。效率在1000:1的负载电流范围内都大于80%，这可以在系统挂起或待机模式下延长电池寿命。优秀的动态响应能够在5个时钟周期内纠正输出负载瞬变状态。片上1A的强栅级驱动器确保了外部n沟道MOSFET的快速开关。\n 这些器件都有逻辑控 \n• 97%的效率 \n• 4.2V至30V输入范围 \n• 2.5V至5.5V双可调电压输出 \n• 可选择的3.3V和5V固定电压或可调节电压输出(Dual Mode™) \n• 12V线性稳压器 \n• 可调节次级反馈(MAX8741) \n• 5V/50mA线性稳压器输出 \n• 精确的2.5V参考输出 \n• 可设定的上电顺序 \n• 电源良好(/RESET)输出 \n• 输出过压保护 \n• 输出欠压关断 \n• 333kHz/500kHz低噪声、固定频率工作 \n• 低压差, 98%占空比工作 \n• 2.5mW典型静态功耗(12V输入，两个SMPS都开启) \;

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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 页数：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 页数：33 Pages

Maxim

美信

Package：28-SSOP（0.209"，5.30mm 宽）；包装：卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带 类别：集成电路（IC） 特殊用途稳压器 描述：IC CNTRLR PWR SUP 28-SSOP

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Package：28-SSOP（0.209"，5.30mm 宽）；包装：卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带 类别：集成电路（IC） 特殊用途稳压器 描述：IC CNTRLR PWR SUP 28-SSOP

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