5秒后页面跳转
捷配首页

Datasheet > MAX1845
MAX1845 PDF预览

MAX1845

更新时间： 2023-12-20 18:46:20
品牌 Logo 应用领域
亚德诺 - ADI 控制器
页数 文件大小 规格书
27页 609K
描述
双路、高效率、降压型控制器，带有精确限流

阅读下载

中文翻译

获取价格

MAX1845 数据手册

 浏览型号MAX1845的Datasheet PDF文件第2页浏览型号MAX1845的Datasheet PDF文件第3页浏览型号MAX1845的Datasheet PDF文件第4页浏览型号MAX1845的Datasheet PDF文件第5页浏览型号MAX1845的Datasheet PDF文件第6页浏览型号MAX1845的Datasheet PDF文件第7页 
19-1955; Rev 2; 1/03  
Dual, High-Efficiency, Step-Down  
Controller with Accurate Current Limit  
General Description  
Features  
The MAX1845 is a dual PWM controller configured for  
step-down (buck) topologies that provides high efficien-  
cy, excellent transient response, and high DC output  
accuracy necessary for stepping down high-voltage bat-  
teries to generate low-voltage chipset and RAM power  
supplies in notebook computers. The CS_ inputs can be  
used with low-side sense resistors to provide accurate  
current limits or can be connected to LX_, using low-side  
MOSFETs as current-sense elements.  
♦ Ultra-High Efficiency  
♦ Accurate Current-Limit Option  
♦ Quick-PWM™ with 100ns Load-Step Response  
♦ 1% V Accuracy over Line and Load  
OUT  
♦ Dual Mode™ Fixed 1.8V/1.5V/Adj or 2.5V/Adj Outputs  
♦ Adjustable 1V to 5.5V Output Range  
♦ 2V to 28V Battery Input Range  
The on-demand PWM controllers are free running, con-  
stant on-time with input feed-forward. This configuration  
provides ultra-fast transient response, wide input-output  
differential range, low supply current, and tight load-reg-  
ulation characteristics. The MAX1845 is simple and easy  
to compensate.  
♦ 200/300/420/540kHz Nominal Switching Frequency  
♦ Adjustable Overvoltage Protection  
♦ 1.7ms Digital Soft-Start  
♦ Drives Large Synchronous-Rectifier FETs  
♦ Power-Good Window Comparator  
♦ 2V 1% Reference Output  
Single-stage buck conversion allows the MAX1845 to  
directly step down high-voltage batteries for the highest  
possible efficiency. Alternatively, two-stage conversion  
(stepping down the 5V system supply instead of the bat-  
tery at a higher switching frequency) allows the minimum  
possible physical size.  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
The MAX1845 is intended for generating chipset, DRAM,  
CPU I/O, or other low-voltage supplies down to 1V. For a  
single-output version, refer to the MAX1844 data sheet.  
The MAX1845 is available in 28-pin QSOP and 36-pin  
thin QFN packages.  
MAX1845EEI  
-40°C to +85°C  
28 QSOP  
36 Thin QFN  
6mm ✕ 6mm  
MAX1845ETX  
-40°C to +85°C  
Applications  
Minimal Operating Circuit  
Notebook Computers  
5V INPUT  
BATTERY  
4.5V TO 28V  
CPU Core Supplies  
V
V
V+  
DD  
Chipset/RAM Supply as Low as 1V  
1.8V and 2.5V I/O Supplies  
UVP  
OVP  
CC  
MAX1845EEI  
ILIM1  
ILIM2  
ON1  
ON2  
BST1  
DH1  
LX1  
BST2  
DH2  
LX2  
OUTPUT1  
1.8V  
OUTPUT2  
2.5V  
DL1  
DL2  
CS2  
TON  
CS1  
OUT1  
PGOOD  
OUT2  
SKIP  
REF  
FB2  
FB1  
GND  
Pin Configurations appear at end of data sheet.  
Quick-PWM and Dual Mode are trademarks of Maxim Integrated  
Products.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...27

中文翻译

下载PDF

与MAX1845相关器件

型号 品牌 获取价格 描述 数据表
MAX1845EEI MAXIM

获取价格

 		Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit
MAX1845EEI+T MAXIM

获取价格

 		Dual Switching Controller, Current-mode, 0.00005A, 620kHz Switching Freq-Max, BICMOS, PDSO
MAX1845EEI-T MAXIM

获取价格

 		Dual Switching Controller, Current-mode, 0.00005A, 620kHz Switching Freq-Max, BICMOS, PDSO
MAX1845ETX MAXIM

获取价格

 		Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit
MAX1845ETX+ MAXIM

获取价格

 		Dual Switching Controller, Current-mode, 0.00005A, 620kHz Switching Freq-Max, BICMOS, 6 X
MAX1845ETX+T MAXIM

获取价格

 		Dual Switching Controller, Current-mode, 0.00005A, 620kHz Switching Freq-Max, BICMOS, 6 X
MAX1845ETX-T MAXIM

获取价格

 		Dual Switching Controller, Current-mode, 0.00005A, 620kHz Switching Freq-Max, BICMOS, 6 X
MAX1845EVKIT MAXIM

获取价格

 		Evaluation Kit for the MAX1845
MAX1846 MAXIM

获取价格

 		High-Efficiency, Current-Mode, Inverting PWM Controller
MAX1846 ADI

获取价格

 		高效率、电流模式、反相PWM控制器

与MAX1845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