5秒后页面跳转
捷配首页

Datasheet > 电源电路 > 开关式稳压器或控制器> MAX1649
MAX1649 PDF预览

MAX1649

更新时间： 2024-11-08 22:57:59
品牌 Logo 应用领域
美信 - MAXIM 控制器
页数 文件大小 规格书
12页 169K
描述
5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers

阅读下载

中文翻译

获取价格

MAX1649 数据手册

 浏览型号MAX1649的Datasheet PDF文件第2页浏览型号MAX1649的Datasheet PDF文件第3页浏览型号MAX1649的Datasheet PDF文件第4页浏览型号MAX1649的Datasheet PDF文件第5页浏览型号MAX1649的Datasheet PDF文件第6页浏览型号MAX1649的Datasheet PDF文件第7页 
19-0305; Rev 2; 9/95  
5 V/3 .3 V o r Ad ju s t a b le , Hig h -Effic ie n c y,  
Lo w -Dro p o u t , S t e p -Do w n DC-DC Co n t ro lle rs  
49/MAX651  
_______________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
♦ More than 90% Efficiency (10mA to 1.5A Loads)  
♦ More than 12.5W Output Power  
The MAX1649/MAX1651 BiCMOS, step-down, DC-DC  
switching controllers provide high efficiency over loads  
ranging from 1mA to more than 2.5A. A unique, current-  
limited pulse-frequency-modulated (PFM) control scheme  
gives these devices the benefits of pulse-width-modula-  
tion (PWM) converters (high efficiency at heavy loads),  
while using only 100µA of supply current (vs. 2mA to  
10mA for PWM converters). Dropout performance down  
to 300mV is provided by a high switch duty cycle (96.5%)  
and a low current-sense threshold (110mV).  
♦ Less than 0.3V Dropout Voltage at 500mA  
♦ 100µA Max Quiescent Supply Current  
♦ 5µA Max Shutdown Supply Current  
♦ 16V Max Input Voltage  
♦ 5V (MAX1649), 3.3V (MAX1651), or Adjustable  
Output Voltage  
A high switching frequency (up to 300kHz) allows these  
devices to use miniature external components.  
♦ Current-Limited Control Scheme  
♦ Up to 300kHz Switching Frequency  
♦ Up to 96.5% Duty Cycle  
The MAX1649/MAX1651 have dropout voltages less  
than 0.3V at 500mA and accept input voltages up to  
16V. Output voltages are preset at 5V (MAX1649), or  
3.3V (MAX1651). They can also be adjusted to any  
voltage from 1.5V to the input voltage by using two  
resistors.  
______________Ord e rin g In fo rm a t io n  
PART  
TEMP. RANGE  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
8 Plastic DIP  
8 SO  
MAX1649CPA  
MAX1649CSA  
MAX1649C/D  
MAX1649EPA  
MAX1649ESA  
MAX1651CPA  
MAX1651CSA  
MAX1651C/D  
MAX1651EPA  
MAX1651ESA  
These step-down controllers drive external P-channel  
MOSFETs at loads greater than 12.5W. If less power is  
required, use the MAX639/MAX640/MAX653 step-down  
c onve rte rs with on-c hip FETs , whic h a llow up to a  
225mA load current.  
Dice*  
8 Plastic DIP  
8 SO  
________________________Ap p lic a t io n s  
PDAs  
8 Plastic DIP  
8 SO  
Dice*  
High-Efficiency Step-Down Regulation  
5V-to-3.3V Green PC Applications  
Battery-Powered Applications  
8 Plastic DIP  
8 SO  
* Dice are tested at T = +25°C.  
A
__________Typ ic a l Op e ra t in g Circ u it  
__________________P in Co n fig u ra t io n  
INPUT  
3.6V TO 16V  
TOP VIEW  
V+  
OUT  
FB  
1
2
3
4
8
7
6
5
GND  
EXT  
CS  
MAX1651  
SHDN  
CS  
ON/OFF  
MAX1649  
MAX1651  
SHDN  
REF  
EXT  
P
OUTPUT  
3.3V  
V+  
OUT  
REF  
DIP/SO  
FB GND  
________________________________________________________________ Maxim Integrated Products  
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .  
1234567...12

中文翻译

下载PDF

与MAX1649相关器件

型号 品牌 获取价格 描述 数据表
MAX1649/MAX1651 MAXIM

获取价格

 		5V/3.3V or Adjustable High-Efficiency Low-Drop-Out Step-Down
MAX1649_09 MAXIM

获取价格

 		5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
MAX16491 ADI

获取价格

 		具有可选应用配置的集成式降压型开关稳压器
MAX1649C/D MAXIM

获取价格

 		5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
MAX1649CPA ROCHESTER

获取价格

 		SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, PDIP8, PLASTIC, DIP-8
MAX1649CPA MAXIM

获取价格

 		5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
MAX1649CSA MAXIM

获取价格

 		5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
MAX1649CSA+ MAXIM

获取价格

 		Switching Controller, Current-mode, 1.5A, 300kHz Switching Freq-Max, BICMOS, PDSO8, 0.150
MAX1649CSA+T MAXIM

获取价格

 		Switching Controller, Current-mode, 1.5A, 300kHz Switching Freq-Max, BICMOS, PDSO8, 0.150
MAX1649CSA-T MAXIM

获取价格

 		暂无描述

与MAX1649相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证