100 Duty Cycle, Low-Noise, Step-Down, PWM DC-DC Converter

General Description The MAX887 high-efficiency, step-down DC-DC converter provides an adjustable output from 1.25V to 10.5V. It accepts inputs from 3.5V to 11V and delivers 600mA. Operation to 100 duty cycle minimizes dropout voltage (300mV typ at 500mA). Synchronous rectification reduces outpu

文件：146.21 Kbytes 頁數(shù)：12 Pages

MAXIM

美信

100%占空比、低噪聲、降壓型、PWM DC-DC轉(zhuǎn)換器

MAX887高效、降壓型DC-DC轉(zhuǎn)換器提供1.25V至10.5V的可調(diào)輸出。它接受3.5V至11V的輸入并提供600mA輸出電流。以100%占空比運行可有效減少壓差電壓（500mA時典型值為300mV）。同步整流可降低輸出整流器損耗，從而使效率高達(dá)95%。\n\n 固定頻率脈寬調(diào)制(PWM)可降低敏感通信應(yīng)用中的噪聲。由于采用了高頻內(nèi)部振蕩器，因而可使用微型表面貼裝元件來減少電路板面積，并消除音頻干擾。SYNC輸入允許與外部時鐘同步，以避免干擾敏感的RF和數(shù)據(jù)采集電路。\n\n MAX887具有電流模式，可提供出色的負(fù)載/線路瞬態(tài)響應(yīng)。逐周期電流限制可保護 ? 95%效率\n\n? 輸出電流：600mA\n\n? 逐周期電流限制\n\n? 低壓差、100%占空比運行、500mA時為300mV\n\n? 內(nèi)部0.6Ω（典型值）MOSFET\n\n? 內(nèi)部同步整流器\n\n? 高頻電流模式PWM\n\n? 外部同步或內(nèi)部300kHz振蕩器\n\n? 保證260kHz至340kHz的內(nèi)部振蕩器頻率限制\n\n? 2.5μA關(guān)斷模式;

ADI

亞德諾

Low-Dropout, 120mA Linear Regulators

General Description The MAX8873T/S/R and MAX8874T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 82μA supply current to remain independent of load, making these devices ideal for battery-operated portab

文件：115.54 Kbytes 頁數(shù)：8 Pages

MAXIM

美信

Low-Dropout, 120mA Linear Regulators

General Description The MAX8873T/S/R and MAX8874T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 82μA supply current to remain independent of load, making these devices ideal for battery-operated portab

文件：115.54 Kbytes 頁數(shù)：8 Pages

MAXIM

美信

Low-Dropout, 120mA Linear Regulators

General Description The MAX8873T/S/R and MAX8874T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 82μA supply current to remain independent of load, making these devices ideal for battery-operated portab

文件：115.54 Kbytes 頁數(shù)：8 Pages

MAXIM

美信

Low-Dropout, 120mA Linear Regulators

General Description The MAX8873T/S/R and MAX8874T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 82μA supply current to remain independent of load, making these devices ideal for battery-operated portab

文件：115.54 Kbytes 頁數(shù)：8 Pages

MAXIM

美信

Low-Dropout, 120mA Linear Regulators

General Description The MAX8873T/S/R and MAX8874T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 82μA supply current to remain independent of load, making these devices ideal for battery-operated portab

文件：115.54 Kbytes 頁數(shù)：8 Pages

MAXIM

美信

Low-Dropout, 120mA Linear Regulators

General Description The MAX8873T/S/R and MAX8874T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 82μA supply current to remain independent of load, making these devices ideal for battery-operated portab

文件：115.54 Kbytes 頁數(shù)：8 Pages

MAXIM

美信

Low-Dropout, 120mA Linear Regulators

General Description The MAX8873T/S/R and MAX8874T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 82μA supply current to remain independent of load, making these devices ideal for battery-operated portab

文件：115.54 Kbytes 頁數(shù)：8 Pages

MAXIM

美信

Low-Dropout, 120mA Linear Regulators

General Description The MAX8873T/S/R and MAX8874T/S/R low-dropout linear regulators operate from a +2.5V to +6.5V input range and deliver up to 120mA. A PMOS pass transistor allows the low, 82μA supply current to remain independent of load, making these devices ideal for battery-operated portab

文件：115.54 Kbytes 頁數(shù)：8 Pages

MAXIM

美信