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參數(shù)資料
| 型號： | MAX5986AETE+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 1/23頁 |
| 文件大?。?/td> | 843K |
| 描述： | IC POE SWITCH PSE 16TQFN |
| 標準包裝： | 60 |
| 類型： | 以太網(wǎng)供電控制器 PD 開關（PoE） |
| 應用： | 供電設備（PSE） |
| 內部開關： | 是 |
| 電流限制： | 201mA |
| 電源電壓： | 8.7 V ~ 60 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-WQFN 裸露焊盤 |
| 供應商設備封裝： | 16-TQFN-EP（5x5） |
| 包裝： | 管件 |
MAX5986AMAX5986C/MAX5987A
IEEE 802.3af-Compliant, High-Efficiency, Class 1/
Class 2, PDs with Integrated DC-DC Converter
19-6261; Rev 3; 1/14
Benefits and Features
S IEEE 802.3af Compliant
S PoE Class 1/Class 2 Classification
S Simplified Wall Adapter Interface
S Intelligent MPS
S Sleep and Ultra-Low-Power Mode (MAX5986A/
MAX5986B)
S Efficient, Integrated DC-DC Converter (with
Integrated Switches)
S 8.7V to 60V Wide Input Voltage Range
S 3.0V to 14V Programmable Output Voltage Range
S Internal Compensation
S Fixed 214kHz/275kHz /430kHz Switching
Frequency
S Frequency Foldback for High-Efficiency Light-
Load Operation
S Built-In Output-Voltage Monitoring
S Open-Drain RESET Output (MAX5987A)
S Protects Against Overload, Output Short Circuit,
Output Overvoltage, and Overtemperature
S Hiccup-Mode Runaway Current Limit
S Back-Bias Capability to Optimize the Efficiency
S Integrated TVS Diode Withstands Cable Discharge
Event (CDE)
S Internal LDO Regulator with Up to 100mA Load
(MAX5987A)
S Fixed 3.3V or Adjustable Output Voltage Through
an External Resistive Divider
S 49mA (typ) Inrush Current Limit
S Pass 2kV, 200m CAT-6 Cable Discharge Event
General Description
The MAX5986AMAX5986C/MAX5987A provide a com-
plete power-supply solution as IEEE
?/DIV>
802.3af-compliant
Class 1/Class 2 Powered Devices (PDs) in a Power-over-
Ethernet (PoE) system. The devices integrate the PD
interface with an efficient DC-DC converter, offering a low
external part count PD solution. The MAX5987A includes
a low-dropout regulator and the MAX5986AMAX5986C
include sleep and ultra-low power modes.
The PD interface provides a detection signature and
a Class 1/Class 2 classification signature with a single
external resistor. The PD interface also provides an
isolation power MOSFET, a 60mA (max) inrush current
limit, and a 201mA (MAX5986A) or 323mA (MAX5986B/
MAX5986C/MAX5987A) operating current limit.
The integrated step-down DC-DC converter uses a peak
current-mode control scheme and provides an easy-to-
implement architecture with a fast transient response. The
step-down converter operates in a wide input voltage range
from 8.7V to 60V and supports up to 3.84W (MAX5986A)
or 6.49W (MAX5986B/MAX5986C/MAX5987A) of input
power. The MAX5986A operates at a fixed 275kHz
switching frequency, while the MAX5986B/MAX5987A
operate at a fixed 215kHz switching frequency and the
MAX5986C operates at a fixed 430kHz switching fre-
quency. The DC-DC converter operates at a fixed switch-
ing frequency, with an efficiency-boosting frequency
foldback that reduces the switching frequency by half at
light loads.
The devices feature an input undervoltage-lockout
(UVLO) with wide hysteresis and long deglitch time
to compensate for twisted-pair cable resistive drop
and to assure glitch-free transition during power-on/-off
conditions. The devices also feature overtemperature
shutdown, short-circuit protection, output overvoltage
protection, and hiccup current limit for enhanced perfor-
mance and reliability.
The MAX5986AMAX5986C/MAX5987A are available in
a 16-pin, 5mm x 5mm, TQFN power package and oper-
ate over the -40癈 to +85癈 temperature range.
IEEE is a registered service mark of the Institute of Electrical
and Electronics Engineers, Inc.
WiMAX is a registered certification mark and registered service
mark of WiMAX Forum.
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to www.maximintegrated.com/MAX5986A/MAX5987A.related.
Applications
IEEE 802.3af-Powered Devices
IP Phones
Wireless Access Nodes
IP Security Cameras
WiMAX
?/DIV>
Base Stations
EVALUATION KIT AVAILABLE
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5986AETE+ | 功能描述:直流/直流開關轉換器 IEEE802.3 af PD w/ DC/DC Conv RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX5986AETE+T | 功能描述:直流/直流開關轉換器 IEEE802.3 af PD w/ DC/DC Conv RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX5986BETE+ | 功能描述:以太網(wǎng) IC IEEE802.3 AF HI EFFICIENCY PD RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| MAX5986BETE+T | 功能描述:PMIC 解決方案 IEEE802.3 AF HI EFFICIENCY PD RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| MAX5986EVKIT# | 功能描述:電源管理IC開發(fā)工具 MAX5986 Eval Kit RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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