Datasheet > MAX5986A

MAX5986A

更新时间： 2024-02-06 16:09:08

品牌	Logo	应用领域
美信 - MAXIM		转换器
页数	文件大小	规格书
20页	1817K
描述
IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Converter

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技术参数
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MAX5986A 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	HQCCN,
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	15 weeks
风险等级：	2.27	其他特性：	OUTPUT IN ADJUSTABLE MODE IS 5.4V TO 5.6V
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	60 V
最小输入电压：	8.7 V	标称输入电压：	48 V
JESD-30 代码：	S-XQCC-N16	湿度敏感等级：	1
功能数量：	1	端子数量：	16
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	0.36 A	封装主体材料：	UNSPECIFIED
封装代码：	HQCCN	封装形状：	SQUARE
封装形式：	CHIP CARRIER, HEAT SINK/SLUG	峰值回流温度（摄氏度）：	NOT SPECIFIED
表面贴装：	YES	切换器配置：	BUCK
最大切换频率：	475 kHz	技术：	BICMOS
温度等级：	INDUSTRIAL	端子形式：	NO LEAD
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

MAX5986A 数据手册

19-6261; Rev 0; 4/12

E V A L U A T I O N K I T A V A I L A B L E

MAX5986A/MAX5987A

IEEE 802.3af-Compliant, High-Efficiency, Class 1,

Powered Devices with Integrated DC-DC Converter

General Description

Benefits and Features

The MAX5986A/MAX5987A provide a complete power-

supply solution as IEEE 802.3af-compliant Class 1

S IEEE 802.3af Compliant

S PoE Class 1 Classification

Powered Devices (PDs) in a Power-over-Ethernet (PoE)

system. The MAX5986A/MAX5987A 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 MAX5986A includes

sleep and ultra-low power modes.

S Simplified Wall Adapter Interface

S Efficient, Integrated DC-DC Converter (with

Integrated Switches)

S 8.7V to 60V Wide Input Voltage Range

S 3.0V to 5.6V Programmable Output Voltage Range

S Internal Compensation

The PD interface provides a detection signature and a

Class 1 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 (typ) operating current limit.

S Fixed 275kHz Switching Frequency

S Frequency Foldback for High-Efficiency Light-

Load Operation

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 volt-

age range from 8.7V to 60V and supports up to 3.84W

of input power at 1.15A load. The DC-DC converter

operates at a fixed 275kHz switching frequency, with an

efficiency-boosting frequency foldback that reduces the

switching frequency by half at light loads.

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)

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 condi-

tions. The devices also feature overtemperature shut-

down, short-circuit protection, output overvoltage protec-

tion, and hiccup current limit for enhanced performance

and reliability.

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

The MAX5986A/MAX5987A are available in a 16-pin,

5mm x 5mm, TQFN power package and operate over the

-40°C to +85°C temperature range.

Applications

IEEE 802.3af-Powered Devices

IP Phones

Wireless Access Nodes

IP Security Cameras

Ordering Information appears at end of data sheet.

WiMAX Base Stations

IEEE is a registered service mark of the Institute of Electrical

and Electronics Engineers, Inc.

For related parts and recommended products to use with this part,

refer to www.maxim-ic.com/MAX5986A/MAX5987A.related.

WiMAX is a registered certification mark and registered service

mark of WiMAX Forum.

�� Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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与MAX5986A相关器件

型号	品牌	获取价格	描述	数据表
MAX5986A_13	MAXIM	获取价格	IEEE 802.3af-Compliant, High-Efficiency, Class 1/Class 2, PDs with Integrated DC-DC Conver
MAX5986AETE	MAXIM	获取价格	IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Con
MAX5986AETE+	MAXIM	获取价格	IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Con
MAX5986B	MAXIM	获取价格	IEEE 802.3af-Compliant, High-Efficiency, Class 1/Class 2, PDs with Integrated DC-DC Conver
MAX5986B	ADI	获取价格	兼容于IEEE 802.3af的高效、Class 1//Class 2 PD，内置DC-D
MAX5986BETE+	MAXIM	获取价格	IEEE 802.3af-Compliant, High-Efficiency, Class 1/Class 2, PDs with Integrated DC-DC Conver
MAX5986C	ADI	获取价格	兼容于IEEE 802.3af的高效、Class 1//Class 2 PD，内置DC-D
MAX5986CETE+	MAXIM	获取价格	Switching Regulator,
MAX5987A	MAXIM	获取价格	IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Con
MAX5987A	ADI	获取价格	兼容于IEEE 802.3af的高效、Class 1//Class 2 PD，内置DC-D

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