_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxims website at www.maxim-ic.com.
Single-Port, 40W, IEEE 802.3af/at PSE
Controller with Integrated MOSFET
19-5142; Rev 1; 9/10
Typical Operating Circuit
General Description
The MAX5971A is a single-port, power-sourcing equip-
ment (PSE) power controller designed for use in IEEE
?/DIV>
802.3af/at-compliant PSE. This device provides powered
device (PD) discovery, classification, current limit, and
DC and AC load-disconnect detections. The MAX5971A
operates automatically without the need for any software
programming and features an integrated power MOSFET
and sense resistor. The device also supports new Class 5
and 2-event classification for detection and classification
of high-power PDs. The MAX5971A provides up to 40W
to a single port (Class 5 enabled) and still provides high-
capacitance detection for legacy PDs.
The MAX5971A provides input undervoltage lockout
(UVLO), input overvoltage lockout, overtemperature
detection, output voltage slew-rate limit during startup,
and LED status indication.
The MAX5971A is available in a space-saving, 28-pin
TQFN (5mm x 5mm) power package, and is rated for the
extended (-40NC to +85NC) temperature range.
Applications
Single-Port PSE End-Point Applications
Single-Port PSE Power Injectors (Midspan
Applications)
Switches/Routers
Industrial Automation Equipment
Wireless LAN Access Point/WiMAX" Base
Station
Features
S IEEE 802.3af/at Compliant
S Up to 40W for Single-Port PSE Applications
S Integrated 0.5I Power MOSFET and Sense
Resistor
S PD Detection and Classification
S Programmable Current Limit for Class 5 PDs
S High-Capacitance Detection for Legacy Devices
S Supports Both DC and AC Load Removal
Detections
S Current Foldback and Duty Cycle-Controlled
Current Limit
S LED Indicator for Port Status
S Direct Fast-Shutdown Control Capability
S Space-Saving, 28-Pin TQFN (5mm x 5mm)
Package
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Ordering Information
IEEE is a registered service mark of the Institute of Electrical
and Electronics Engineers, Inc.
WiMAX is a trademark of WiMAX Forum.
E
V
AL
U
AT
IO
N
K
IT
AV
A
IL
AB
L
E
PART
TEMP RANGE
PIN-PACKAGE
MAX5971AETI+
-40NC to +85NC
28 TQFN-EP*
-54V
AGND
LED
PWMEN
V
EE_DIG
V
EE
LEGACY
MIDSPAN
OSC
EN
OUT
OUTP
DET
ILIM1
ILIM2
MAX5971A
PSE OUTPUT
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
MAX5972AETE+T
IC CONTROLLER INTERFACE 16TQFN
MAX5978ETJ+
IC CTLR HOT-SWAP 32TQFN
MAX5981BETE+
IC CTRLR PD IEEE 802.3AF 16TQFN
MAX5986AETE+
IC POE SWITCH PSE 16TQFN
MAX6509CAZK/V+T
IC TEMP SWITCH RES-PROG 5TSOT
MAX6513TT075+T
IC TEMP SWITCH REMOTE 6-TDFN
MAX6581TG9A+
IC TEMP SENSOR 8-CH PREC 24-TQFN
MAX6602UE9A+T
IC TEMP MONITOR 5CH 16-TSSOP
相关代理商/技术参数
MAX5971AETI+T
功能描述:热插拔功率分布 IEEE 802.3af/at PSE Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5971AETI+W
制造商:Maxim Integrated Products 功能描述:IEEE802.3 AT PSE SWITCH - Rail/Tube
MAX5971AEVKIT
功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
MAX5971AEVKIT+
制造商:Maxim Integrated Products 功能描述:PD INTERFACE CONTROLLER - Boxed Product (Development Kits)
MAX5971BETI
制造商:Maxim Integrated Products 功能描述:
MAX5971BETI+
功能描述:热插拔功率分布 IEEE 802.3af/at PSE Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5971BETI+T
功能描述:热插拔功率分布 IEEE 802.3af/at PSE Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5971BETI+W
制造商:Maxim Integrated Products 功能描述:SINGLE-PORT, 40W, IEEE 802.3AF/AT, PSE CONTROLLER WITH IC - Rail/Tube