5秒后页面跳转
捷配首页

Datasheet > MAX1864
MAX1864 PDF预览

MAX1864

更新时间： 2024-09-14 22:57:59
品牌 Logo 应用领域
美信 - MAXIM 调制解调器电缆调制解调器
页数 文件大小 规格书
25页 383K
描述
xDSL/Cable Modem Triple/Quintuple Output Power Supplies

阅读下载

中文翻译

获取价格

MAX1864 数据手册

 浏览型号MAX1864的Datasheet PDF文件第2页浏览型号MAX1864的Datasheet PDF文件第3页浏览型号MAX1864的Datasheet PDF文件第4页浏览型号MAX1864的Datasheet PDF文件第5页浏览型号MAX1864的Datasheet PDF文件第6页浏览型号MAX1864的Datasheet PDF文件第7页 
19-2030; Rev 0; 4/01  
xDSL/Cable Modem Triple/Quintuple Output  
Power Supplies  
General Description  
Features  
The MAX1864/MAX1865 power-supply controllers are  
designed to address cost-conscious applications such  
as cable modem Consumer Premise Equipment (CPE),  
xDSL CPE, and set-top boxes. Operating off a low-cost,  
unregulated DC supply (such as a wall adapter output),  
the MAX1864 generates three positive outputs, and the  
MAX1865 generates four positive outputs and one neg-  
ative output to provide a cost-effective system power  
supply.  
ꢀ 4.5V to 28V Input Voltage Range  
ꢀ Master DC-DC Step-Down Converter  
Preset 3.3V or Adjustable (1.236V to 0.8 ✕ V )  
IN  
Output Voltage  
Fixed-Frequency (100kHz/200kHz) PWM  
Controller  
No Current-Sense Resistor  
Adjustable Current Limit  
95% Efficient  
The MAX1864 includes a current-mode synchronous  
step-down controller and two positive regulator gain  
blocks. The MAX1865 has one additional positive gain  
block and one negative regulator gain block. The main  
synchronous step-down controller generates a  
high-current output that is preset to 3.3V or adjustable  
ꢀ Two (MAX1864)/Four (MAX1865) Analog  
Gain Blocks  
Positive Analog Blocks Drive Low-Cost PNP  
Pass Transistors to Build Positive Linear  
Regulators  
from 1.236V to 0.8 ✕ V with an external resistive-  
IN  
divider. The 100kHz/200kHz operating frequency  
allows the use of low-cost aluminum-electrolytic capaci-  
tors and low-cost power magnetics. Additionally, the  
MAX1864/MAX1865 step-down controllers sense the  
voltage across the low-side MOSFET’s on-resistance to  
efficiently provide the current-limit signal, eliminating  
the need for costly current-sense resistors.  
Negative Analog Block (MAX1865) Drives a  
Low-Cost NPN Pass Transistor to Build a  
Negative Linear Regulator  
ꢀ Power-Good Indicator  
ꢀ Soft-Start Ramp for All Positive Regulators  
The MAX1864/MAX1865 generate additional supply  
rails at low cost. The positive regulator gain blocks use  
an external PNP pass transistor to generate low-voltage  
rails directly from the main step-down converter (such  
as 2.5V or 1.8V from the main 3.3V output) or higher  
voltages using coupled windings from the step-down  
converter (such as 5V, 12V, or 15V). The MAX1865’s  
negative gain block uses an external NPN pass transis-  
tor in conjunction with a coupled winding to generate  
-5V, -12V, or -15V.  
Ordering Information  
TEMP.  
PIN-  
f
OSC  
PART  
RANGE  
PACKAGE  
(kHz)  
MAX1864TEEE  
MAX1864UEEE  
MAX1865TEEP  
MAX1865UEEP  
-40 C to +85 C  
-40 C to +85 C  
-40 C to +85 C  
-40 C to +85 C  
16 QSOP  
16 QSOP  
20 QSOP  
20 QSOP  
200  
100  
200  
100  
All output voltages are externally adjustable, providing  
maximum flexibility. Additionally, the MAX1864/  
MAX1865 feature soft-start for the step-down converter  
and all the positive linear regulators, and have a power-  
good output that monitors all of the output voltages.  
Pin Configurations  
TOP VIEW  
POK  
1
2
3
4
5
6
7
8
16 IN  
COMP  
OUT  
FB  
15 VL  
14 BST  
Applications  
xDSL, Cable, and ISDN Modems  
Set-Top Boxes  
MAX1864  
13 DH  
12 LX  
11 DL  
10 GND  
B2  
FB2  
B3  
Wireless Local Loop  
FB3  
9
ILIM  
16 QSOP  
Pin Configurations continued at end of data sheet.  
________________________________________________________________ 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...25

中文翻译

下载PDF

与MAX1864相关器件

型号 品牌 获取价格 描述 数据表
MAX1864EVKIT MAXIM

获取价格

 		Evaluation Kit for the MAX1864
MAX1864-MAX1865 MAXIM

获取价格

 		xDSL/Cable Modem Triple/Quintuple Output Power Supplies
MAX1864TEEE MAXIM

获取价格

 		xDSL/Cable Modem Triple/Quintuple Output Power Supplies
MAX1864TEEE+ MAXIM

获取价格

 		Switching Controller, Current-mode, 0.5A, 240kHz Switching Freq-Max, BICMOS, PDSO16, 0.150
MAX1864UEEE MAXIM

获取价格

 		xDSL/Cable Modem Triple/Quintuple Output Power Supplies
MAX1864UEEE+ MAXIM

获取价格

 		Switching Controller, Current-mode, 0.5A, 120kHz Switching Freq-Max, BICMOS, PDSO16, 0.150
MAX1864UEEE+T MAXIM

获取价格

 		Switching Controller, Current-mode, 0.5A, 120kHz Switching Freq-Max, BICMOS, PDSO16, 0.150
MAX1864UEEE-T MAXIM

获取价格

 		Switching Controller, Current-mode, 0.5A, 120kHz Switching Freq-Max, BICMOS, PDSO16, 0.150
MAX1865 MAXIM

获取价格

 		xDSL/Cable Modem Triple/Quintuple Output Power Supplies
MAX1865TEEP MAXIM

获取价格

 		xDSL/Cable Modem Triple/Quintuple Output Power Supplies

与MAX1864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