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MAX5922AEUI PDF预览

MAX5922AEUI

更新时间： 2024-09-25 22:55:19
品牌 Logo 应用领域
美信 - MAXIM 电源电路开关电源管理电路电源开关光电二极管信息通信管理局域网
页数 文件大小 规格书
21页 436K
描述
+48V, Single-Port Network Power Switch For Power-Over-LAN

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中文翻译

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MAX5922AEUI 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：SSOP
包装说明：TSSOP, TSSOP28,.25针数：28
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：5.13Is Samacsys：N
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G28JESD-609代码：e0
长度：9.7 mm湿度敏感等级：1
信道数量：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封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP28,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：245电源：48 V
认证状态：Not Qualified座面最大高度：1.1 mm
子类别：Power Management Circuits最大供电电流 (Isup)：1.6 mA
最大供电电压 (Vsup)：60 V最小供电电压 (Vsup)：32 V
标称供电电压 (Vsup)：48 V表面贴装：YES
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4.4 mm
Base Number Matches：1

MAX5922AEUI 数据手册

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19-2708; Rev 0; 4/03  
+48V, Single-Port Network Power Switch  
For Power-Over-LAN  
General Description  
Features  
The MAX5922A/B/C is a single-port network power con-  
troller with an integrated power MOSFET, operating from  
a +32V to +60V supply rail. The device is specifically  
designed for power-sourcing equipment (PSE) in power-  
over-LAN applications and is fully compliant to the IEEE  
802.3af standard. The MAX5922 provides power devices  
(PD) discovery, classification, current limit, and other nec-  
essary functions for an IEEE 802.3af compliant PSE.  
ꢀ IEEE 802.3af Compliant  
ꢀ +32V to +60V Wide Operating Input Range  
ꢀ 0.45Ω Integrated Power Switch  
ꢀ Power Device (PD) Detection and Classification  
ꢀ 100µA PD Leakage Detection Tolerant  
ꢀ Programmable Current Limit  
The MAX5922 is suitable for PSE function in both  
switch/router systems where the power is delivered to the  
load through the signal pairs, and in midspan systems  
where the power is delivered to the load through the  
spare pairs. In midspan mode, a detection collision  
avoidance circuit (MAX5922A/C only) provides the nec-  
essary back-off timing to prevent fault detections that  
happen when two different PSEs try to detect and  
power the same PD. The MAX5922B/C have a detec-  
tion disable input that can be connected high to disable  
the detection/classification functions or connected low  
to enable them.  
ꢀ Zero-Current Detection with Status Output  
ꢀ Detection Collision Avoidance Option for Midspan  
Application  
ꢀ Input Logic Signals Compatible with 1.8V to 5V  
CMOS Logic  
ꢀ Separate Analog and Digital Grounds with Up to  
4V Offset  
ꢀ Power-Good Status Output  
ꢀ Overcurrent and Overtemperature Protection with  
Status Outputs  
The MAX5922 features a programmable undervoltage  
lockout (UVLO) that keeps the device in shutdown until  
the input voltage exceeds a certain threshold, set to 38V  
(MAX5922A) or 28V (MAX5922B/C) internally. After suc-  
cessfully discovering and classifying a PD, the MAX5922  
enters startup mode. During startup, the MAX5922 limits  
the output voltage and current slew rate to minimize EMI  
(electromagnetic interference). The MAX5922 has an inte-  
grated 0.45Ω N-channel power MOSFET that provides  
efficient operation and simplified system design. The  
MAX5922 monitors and provides current-limit protection  
to the load at all times. The current limit is programmable  
using an external current-sensing resistor. The MAX5922  
features current-limit foldback and duty-cycle limit to  
ensure robust operation during load-fault and short-circuit  
conditions. Fault management allows the part to either  
latch-off or autorestart after a fault.  
ꢀ Current-Limit Foldback with Timeout and Duty-  
Cycle Control  
ꢀ Latch or Autorestart Fault Management  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
28 TSSOP  
MAX5922AEUI  
MAX5922BEUI  
MAX5922CEUI  
28 TSSOP  
28 TSSOP  
Applications  
Power-Sourcing Equipment (PSE)  
Power-Over-LAN/Power-Over-MDI  
(Media-Dependent Interface)  
The MAX5922 provides POK, ZC, and FAULT status sig-  
nals to indicate output power is good, zero-current fault,  
and other faults (overcurrent, overtemperature), respec-  
tively. The MAX5922 is available in a 28-pin TSSOP pack-  
age and is rated over the extended -40°C to +85°C  
temperature range.  
Computer Telephony  
Single-Port Power Injector/Adapter  
Midspan Power Injector  
Switches/Routers with In-Line Power  
Typical Application Circuits, Selector Guide, and Pin  
Configuration appear 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...21

中文翻译

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MAX5922AEUI 替代型号

型号 品牌 替代类型 描述 数据表
MAX5922AEUI+T MAXIM

类似代替

 暂无描述
MAX5922AEUI+ MAXIM

类似代替

 Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, PDSO28, 4.40 MM, TSSOP-28
MAX5922AEUI-T MAXIM

功能相似

 Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, PDSO28, 4.40 MM, TSSOP-28

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MAX5922AEUI+ MAXIM

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MAX5922AEUI+T MAXIM

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 		暂无描述
MAX5922AEUI-T MAXIM

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MAX5922BEUI MAXIM

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 		+48V, Single-Port Network Power Switch For Power-Over-LAN
MAX5922BEUI+ MAXIM

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 		Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, PDSO28, 4.40 MM, TSSOP-28
MAX5922BEUI+T MAXIM

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 		Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, PDSO28, 4.40 MM, TSSOP-28
MAX5922BEUI-T MAXIM

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 		暂无描述
MAX5922CEUI MAXIM

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 		+48V, Single-Port Network Power Switch For Power-Over-LAN
MAX5922CEUI+ MAXIM

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 		Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, PDSO28, 4.40 MM, TSSOP-28
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