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MAX8550ETI

更新时间： 2024-09-30 22:55:11
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美信 - MAXIM 开关电脑信息通信管理双倍数据速率
页数 文件大小 规格书
29页 455K
描述
Integrated DDR Power-Supply Solutions for Desktops, Notebooks, and Graphic Cards

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MAX8550ETI 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：QFN
包装说明：VQCCN, LCC28,.2SQ,20针数：28
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.17
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：5.5 V
最小输入电压：4.5 V标称输入电压：5 V
JESD-30 代码：S-XQCC-N28JESD-609代码：e0
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：6.5 A封装主体材料：UNSPECIFIED
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）：245认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：PUSH-PULL
最大切换频率：600 kHz技术：BICMOS
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
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：NOT SPECIFIED
宽度：5 mmBase Number Matches：1

MAX8550ETI 数据手册

 浏览型号MAX8550ETI的Datasheet PDF文件第2页浏览型号MAX8550ETI的Datasheet PDF文件第3页浏览型号MAX8550ETI的Datasheet PDF文件第4页浏览型号MAX8550ETI的Datasheet PDF文件第5页浏览型号MAX8550ETI的Datasheet PDF文件第6页浏览型号MAX8550ETI的Datasheet PDF文件第7页 
19-3173; Rev 2; 9/04  
In t e g ra t e d DDR P o w e r-S u p p ly S o lu t io n s fo r  
De s k t o p s , No t e b o o k s , a n d Gra p h ic Ca rd s  
Ge n e ra l De s c rip t io n  
The MAX8550/MAX8551 integrate a synchronous-buck  
Fe a t u re s  
Buck Controller  
♦ Quick-PWM with 100ns Load-Step Response  
♦ Up to 95% Efficiency  
PWM controller to generate V  
, a sourcing and sinking  
DDQ  
LDO linear regulator to generate V , and a 10mA refer-  
TT  
ence output buffer to generate V . The buck controller  
TTR  
♦ 2V to 28V Input Voltage Range  
drives two external N-channel MOSFETs to generate out-  
put voltages down to 0.7V from a 2V to 28V input with out-  
put currents up to 15A. The LDO can sink or source up to  
1.5A continuous and 3A peak current. Both the LDO out-  
put and the 10mA reference buffer output can be made  
to track the REFIN voltage. These features make the  
MAX8550/MAX8551 ideally suited for DDR memory appli-  
cations in desktops, notebooks, and graphic cards.  
♦ 1.8V/2.5V Fixed or 0.7V to 5.5V Adjustable Output  
♦ Up to 600kHz Selectable Switching Frequency  
♦ Programmable Current Limit with Foldback  
Capability  
♦ 1.7ms Digital Soft-Start and Independent  
Shutdown  
♦ Overvoltage/Undervoltage-Protection Option  
♦ Power-Good Window Comparator  
LDO Section  
The PWM controller in the MAX8550/MAX8551 utilizes  
Maxim’s proprietary Quick-PWM™ architecture with pro-  
grammable switching frequencies of up to 600kHz. This  
control scheme handles wide input/output voltage ratios  
with ease and provides 100ns response to load tran-  
sients while maintaining high efficiency and a relatively  
constant switching frequency. The MAX8550 offers fully  
programmable UVP/OVP and skip-mode options ideal in  
portable applications. Skip mode allows for improved  
efficiency at lighter loads. The MAX8551, which is tar-  
geted towards desktop and graphic-card applications,  
does not offer the pulse-skip feature.  
♦ Fully Integrated VTT and VTTR Capability  
♦ VTT has 3A Sourcing/Sinking Capability  
♦ VTT and VTTR Outputs Track V  
/ 2  
REFIN  
♦ All-Ceramic Output-Capacitor Designs  
♦ 1.0V to 2.8V Input Voltage Range  
♦ Power-Good Window Comparator  
Ord e rin g In fo rm a t io n  
The VTT and VTTR outputs track to within 1% of V  
/ 2.  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
REFIN  
The high bandwidth of this LDO regulator allows excel-  
lent transient response without the need for bulk capac-  
itors, thus reducing cost and size.  
MAX8550ETI  
MAX8550ETI+  
MAX8551ETI  
28 5mm × 5mm TQFN  
28 5mm × 5mm TQFN  
28 5mm × 5mm TQFN  
The buck controller and LDO regulators are provided with  
independent current limits. Adjustable lossless foldback  
current limit for the buck regulator is achieved by monitor-  
ing the drain-to-source voltage drop of the low-side MOS-  
FET. Ad d itiona lly, ove rvolta g e a nd und e rvolta g e  
protection mechanisms are built in. Once the overcurrent  
condition is removed, the regulator is allowed to enter  
soft-start again. This helps minimize power dissipation  
during a short-circuit condition. The MAX8550/MAX8551  
allow flexible sequencing and standby power manage-  
ment using the SHDNA, SHDNB, and STBY inputs.  
+Denotes lead-free package.  
P in Co n fig u ra t io n  
TOP VIEW  
TON  
1
2
3
4
5
6
7
21 DL  
OVP/UVP  
(N.C. FOR  
MAX8551)  
20  
19  
BST  
LX  
REF  
Both the MAX8550 and MAX8551 are available in a  
small 5mm × 5mm, 28-pin thin QFN package.  
ILIM  
18 DH  
MAX8550  
MAX8551  
POK1  
POK2  
STBY  
17  
16  
V
IN  
Ap p lic a t io n s  
DDR I and DDR II Memory Power Supplies  
Desktop Computers  
OUT  
15 FB  
Notebooks and Desknotes  
Graphic Cards  
5mm x 5mm Thin QFN  
Game Consoles  
RAID  
Typical Operating Circuit appears at end of data sheet.  
Networking  
Quick-PWM is a trademark of Maxim Integrated Products, Inc.  
________________________________________________________________ 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...29

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MAX8550ETI 替代型号

型号 品牌 替代类型 描述 数据表
MAX8550ETI+T MAXIM

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MAX8550ETI-T MAXIM

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MAX8550ETI+ MAXIM

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 Integrated DDR Power-Supply Solutions for Desktops, Notebooks, and Graphic Cards

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MAX8550ETI+ MAXIM

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 		Integrated DDR Power-Supply Solutions for Desktops, Notebooks, and Graphic Cards
MAX8550ETI+T MAXIM

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MAX8550EVKIT MAXIM

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MAX8551ETI MAXIM

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 		Integrated DDR Power-Supply Solutions for Desktops, Notebooks, and Graphic Cards
MAX8551ETI/GH9 MAXIM

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