5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters

General Description The MAX639/MAX640/MAX653 step-down switching regulators provide high efficiency over a wide range of load currents, delivering up to 225mA. A current-limiting pulse-frequency-modulated (PFM) control scheme gives the devices the benefits of pulse-width-modulated (PWM) converter

文件：166.91 Kbytes 頁數：12 Pages

MAXIM

美信

5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Conver

文件：778.12 Kbytes 頁數：13 Pages

MAXIM

美信

5V/3.3V/3V可調、高效、低IQ、降壓型DC-DC轉換器

MAX639/MAX640/MAX653降壓型開關穩(wěn)壓器在寬負載電流范圍內提供高效率，提供高達225mA的電流。這些器件采用限流脈沖頻率調制(PFM)控制方案，具有脈沖寬度調制(PWM)轉換器的優(yōu)勢（重負載時效率高），同時電源電流僅10μA（PWM轉換器的電源電流為2mA至10mA）。由此可在很寬的負載范圍內保持高效率。\n\n MAX639/MAX640/MAX653輸入范圍為4V至11.5V，且這些器件提供更低的預設輸出電壓，分別為5V、3.3V和3V?；蛘?，輸出可由用戶調整為1.3V到輸入電壓范圍內的任何電壓。\n\n MAX639/MAX640/MAX653具有內部 ? 在寬負載電流范圍內保持高效率\n\n? 靜態(tài)電流：10μA\n\n? 輸出電流最高可達225mA\n\n? 預設或可調輸出電壓：\n? 5.0V (MAX639)\n\n? 3.3V (MAX640)\n\n? 3.0V (MAX653)\n\n\n\n\n? 低電池電量檢測比較器\n\n? 限流PFM控制方案;

ADI

亞德諾

SC70, Single/Dual Low-Voltage, Low-Power 關P Reset Circuits

General Description The MAX6381–MAX6390 microprocessor (μP) supervisory circuits monitor power-supply voltages from +1.8V to +5.0V while consuming only 3μA of supply current at +1.8V. Whenever VCC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a

文件：195.38 Kbytes 頁數：11 Pages

MAXIM

美信

SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits

General Description The MAX6381–MAX6390 microprocessor (μP) supervisory circuits monitor power-supply voltages from +1.8V to +5.0V while consuming only 3μA of supply current at +1.8V. Whenever VCC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a

文件：327.97 Kbytes 頁數：10 Pages

MAXIM

美信

SC70/μDFN, Single/Dual Low-Voltage, Low-Power μP Reset Circuits

General Description The MAX6381–MAX6390 microprocessor (μP) supervisory circuits monitor power-supply voltages from +1.8V to +5.0V while consuming only 3μA of supply current at +1.8V. Whenever VCC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a

文件：327.97 Kbytes 頁數：10 Pages

MAXIM

美信

SC70, Single/Dual Low-Voltage, Low-Power 關P Reset Circuits

General Description The MAX6381–MAX6390 microprocessor (μP) supervisory circuits monitor power-supply voltages from +1.8V to +5.0V while consuming only 3μA of supply current at +1.8V. Whenever VCC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a

文件：195.38 Kbytes 頁數：11 Pages

MAXIM

美信

SC70, Single/Dual Low-Voltage, Low-Power 關P Reset Circuits

General Description The MAX6381–MAX6390 microprocessor (μP) supervisory circuits monitor power-supply voltages from +1.8V to +5.0V while consuming only 3μA of supply current at +1.8V. Whenever VCC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a

文件：195.38 Kbytes 頁數：11 Pages

MAXIM

美信

SC70, Single/Dual Low-Voltage, Low-Power 關P Reset Circuits

General Description The MAX6381–MAX6390 microprocessor (μP) supervisory circuits monitor power-supply voltages from +1.8V to +5.0V while consuming only 3μA of supply current at +1.8V. Whenever VCC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a

文件：195.38 Kbytes 頁數：11 Pages

MAXIM

美信

SC70, Single/Dual Low-Voltage, Low-Power 關P Reset Circuits

General Description The MAX6381–MAX6390 microprocessor (μP) supervisory circuits monitor power-supply voltages from +1.8V to +5.0V while consuming only 3μA of supply current at +1.8V. Whenever VCC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a

文件：195.38 Kbytes 頁數：11 Pages

MAXIM

美信