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 页数：12 Pages

Maxim

美信

5V/3.3V/3V/可调、高效率、低IQ、降压型DC-DC转换器

MAX639/MAX640/MAX653降压型开关稳压器在宽负载电流范围内提供高效率，提供高达225mA的电流。这些器件采用限流脉冲频率调制(PFM)控制方案，具有脉冲宽度调制(PWM)转换器的优势（重负载时效率高），同时电源电流仅10µA（PWM转换器的电源电流为2mA至10mA）。由此可在很宽的负载范围内保持高效率。\n\n MAX639/MAX640/MAX653输入范围为4V至11.5V，且这些器件提供更低的预设输出电压，分别为5V、3.3V和3V。或者，输出可由用户调整为1.3V到输入电压范围内的任何电压。\n\n MAX639/MAX640/MAX653具有内部 • 在宽负载电流范围内保持高效率\n\n• 静态电流：10µA\n\n• 输出电流最高可达225mA\n\n• 预设或可调输出电压：\n• 5.0V (MAX639)\n\n• 3.3V (MAX640)\n\n• 3.0V (MAX653)\n\n\n\n\n• 低电池电量检测比较器\n\n• 限流PFM控制方案;

ADI

亚德诺

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 页数：12 Pages

Maxim

美信

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 页数：12 Pages

Maxim

美信

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 页数：12 Pages

Maxim

美信

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 页数：12 Pages

Maxim

美信

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 页数：12 Pages

Maxim

美信

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 页数：12 Pages

Maxim

美信

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 页数：12 Pages

Maxim

美信

Package：8-DIP（0.300"，7.62mm）；包装：卷带（TR） 功能：降压 类别：集成电路（IC） 稳压器 - DC-DC 开关稳压器 描述：IC REG BUCK ADJ/3V 225MA 8DIP

AD

亚德诺