MAX639MJA中文资料PDF规格书
MAX639MJA规格书详情
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) converters (high efficiency at heavy loads), while using only 10µA of supply current (vs. 2mA to 10mA for PWM converters). The result is high efficiency over a wide range of loads.
Features
♦ High Efficiency for a Wide Range of Load Currents
♦ 10µA Quiescent Current
♦ Output Currents Up to 225mA
♦ Preset or Adjustable Output Voltage:
5.0V (MAX639)
3.3V (MAX640)
3.0V (MAX653)
♦ Low-Battery Detection Comparator
♦ Current-Limiting PFM Control Scheme
Applications
9V Battery to 5V, 3.3V, or 3V Conversion
High-Efficiency Linear Regulator Replacement
Portable Instruments and Handy-Terminals
5V-to-3.3V Converters
产品属性
- 型号:
MAX639MJA
- 功能描述:
直流/直流开关转换器
- RoHS:
否
- 制造商:
STMicroelectronics
- 最大输入电压:
4.5 V
- 开关频率:
1.5 MHz
- 输出电压:
4.6 V
- 输出电流:
250 mA
- 输出端数量:
2
- 最大工作温度:
+ 85 C
- 安装风格:
SMD/SMT
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
PHILIPS/飞利浦 |
23+ |
NA/ |
3000 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
PHILIPS/飞利浦 |
23+ |
SOT |
90000 |
只做原厂渠道价格优势可提供技术支持 |
询价 | ||
MAXIM/美信 |
24+ |
SMD |
860000 |
明嘉莱只做原装正品现货 |
询价 | ||
MAX |
22+ |
CDIP-8 |
2250 |
100%全新原装公司现货供应!随时可发货 |
询价 | ||
PHILIPS/飞利浦 |
SMD |
265209 |
假一罚十原包原标签常备现货! |
询价 | |||
MAXIM-美信 |
24+25+/26+27+ |
SMD-贴片 |
18800 |
一一有问必回一特殊渠道一有长期订货一备货HK仓库 |
询价 | ||
MAXIM |
19+ |
DIP8 |
256800 |
原厂代理渠道,每一颗芯片都可追溯原厂; |
询价 | ||
MAXIM |
22+ |
SMD |
8200 |
原装现货库存.价格优势!! |
询价 | ||
PHILIPS/飞利浦 |
SMD |
13000 |
原厂授权一级代理,专业海外优势订货,价格优势、品种 |
询价 | |||
1500 |
真实现货库存 |
询价 |