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MAX1809ETI+T

更新时间： 2024-01-10 06:30:30
品牌 Logo 应用领域
美信 - MAXIM 开关
页数 文件大小 规格书
17页 803K
描述
Switching Regulator, Current-mode, 4.7A, 1000kHz Switching Freq-Max, CQCC28, TQFN-28

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MAX1809ETI+T 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：QFN
包装说明：VQCCN, LCC28,.2SQ,20针数：28
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.19
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
控制技术：CONSTANT OFF TIME最大输入电压：5.5 V
最小输入电压：3 V标称输入电压：3.3 V
JESD-30 代码：S-CQCC-N28JESD-609代码：e3
长度：5 mm湿度敏感等级：1
功能数量：1端子数量：28
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：4.7 A封装主体材料：CERAMIC, METAL-SEALED COFIRED
封装代码：VQCCN封装等效代码：LCC28,.2SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, VERY THIN PROFILE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：0.75 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：BUCK
最大切换频率：1000 kHz温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：30宽度：5 mm
Base Number Matches：1

MAX1809ETI+T 数据手册

 浏览型号MAX1809ETI+T的Datasheet PDF文件第2页浏览型号MAX1809ETI+T的Datasheet PDF文件第3页浏览型号MAX1809ETI+T的Datasheet PDF文件第4页浏览型号MAX1809ETI+T的Datasheet PDF文件第5页浏览型号MAX1809ETI+T的Datasheet PDF文件第6页浏览型号MAX1809ETI+T的Datasheet PDF文件第7页 
19-2142; Rev 1; 9/02  
3A, 1MHz, DDR Memory Termination Supply  
General Description  
Features  
The MAX1809 is a reversible energy flow, constant-off-  
time, pulse-width modulated (PWM), step-down DC-DC  
converter. It is ideal for use in notebook and subnote-  
book computers that require 1.1V to 5V active  
termination power supplies. This device features an  
internal PMOS power switch and internal synchronous  
rectifier for high efficiency and reduced component  
count. The internal 90mΩ PMOS power switch and  
70mΩ NMOS synchronous-rectifier switch easily deliver  
continuous load currents up to 3A. The MAX1809 accu-  
rately tracks an external reference voltage, produces  
o Source/Sink 3A  
o ±±1 ꢀuꢁtuꢁ Accurꢂcꢃ  
o Ut ꢁo ±MHz Swiꢁching Frequencꢃ  
o 931 Efficiencꢃ  
o Inꢁernꢂl PMꢀS/NMꢀS Swiꢁches  
90mΩ/70mΩ ꢀn-Resisꢁꢂnce ꢂꢁ V = 4.5V  
±±0mΩ/80mΩ ꢀn-Resisꢁꢂnce ꢂꢁ V = 3V  
IN  
IN  
o ±.±V ꢁo V Adjusꢁꢂble ꢀuꢁtuꢁ Volꢁꢂge  
IN  
an adjustable output from 1.1V to V  
efficiencies as high as 93%.  
and achieves  
IN,  
o 3V ꢁo 5.5V Intuꢁ Volꢁꢂge Rꢂnge  
o <±µA Shuꢁdown Suttlꢃ Currenꢁ  
o Progrꢂmmꢂble Consꢁꢂnꢁ-ꢀff-Time ꢀterꢂꢁion  
o Thermꢂl Shuꢁdown  
The MAX1809 uses a unique current-mode, constant-  
off-time, PWM control scheme that allows the output to  
source or sink current. This feature allows energy to  
return to the input power supply that otherwise would  
be wasted. The programmable constant-off-time archi-  
tecture sets switching frequencies up to 1MHz, allowing  
the user to optimize performance trade-offs between  
efficiency, output switching noise, component size, and  
cost. The MAX1809 features an adjustable soft-start to  
limit surge currents during startup, a 100% duty-cycle  
mode for low-dropout operation, and a low-power shut-  
down mode that disables the power switches and  
reduces supply current below 1µA. The MAX1809 is  
available in a 28-pin QFN with an exposed backside  
pad, a 28-pin thin QFN, or a 16-pin QSOP.  
o Adjusꢁꢂble Sofꢁ-Sꢁꢂrꢁ Inrush Currenꢁ Limiꢁing  
o ꢀuꢁtuꢁ Shorꢁ-Circuiꢁ Proꢁecꢁion  
Ordering Information  
PART  
MAX1809EGI*  
MAX1809EEE  
MAX1809ETI  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
28 QFN  
16 QSOP  
28 Thin QFN  
*Contact factory for availability.  
Applications  
DDR Memory Termination  
Active Termination Buses  
Pin Configurations  
TOP VIEW  
Typical Operating Circuit  
N.C.  
IN  
PGND  
PGND  
LX  
1
2
3
4
5
6
7
21  
20  
19  
18  
17  
16  
15  
V
V
OUT  
IN  
IN  
LX  
LX  
MAX1809  
PGND  
GND  
IN  
LX  
MAX1809  
V
CC  
N.C.  
PGND  
FB  
REF  
SS  
SHDN  
V
CC  
SS  
V
SET  
EXTREF  
EXTREF  
GND  
TOFF  
THIN QFN  
Pin Configurations continued at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
±
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...17

中文翻译

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MAX1809ETI+T 替代型号

型号 品牌 替代类型 描述 数据表
MAX1809ETI+ MAXIM

类似代替

 Switching Regulator, Current-mode, 4.7A, 1000kHz Switching Freq-Max, CQCC28, TQFN-28
MAX1809ETI MAXIM

功能相似

 3A, 1MHz, DDR Memory Termination Supply

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