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参数资料
| 型号： | MAX5941BCSE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC IEEE 802.3AF-COMP POE 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 控制器类型： | 以太网供电控制器（POE） |
| 接口： | IEEE 802.3af |
| 电源电压： | 48V |
| 电流 - 电源： | 1mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
General Description
The MAX5941A/MAX5941B integrate a complete power
IC for powered devices (PD) in a power-over-ethernet
(PoE) system. The MAX5941A/MAX5941B provide a PD
interface and a compact DC-DC PWM controller suitable
for flyback and forward converters in either isolated or
nonisolated designs.
The MAX5941A/MAX5941B PD interface complies with
the IEEE 802.3af standard, providing the PD with a detec-
tion signature, a classification signature, and an integrat-
ed isolation switch with programmable inrush current
control. These devices also feature power-mode under-
voltage lockout (UVLO) with wide hysteresis and power-
good status outputs.
The MAX5941A/MAX5941B also integrate all the building
blocks necessary for implementing DC-DC fixed-
frequency isolated power supplies. These devices are a
current-mode controller with an integrated high startup
circuit suitable for isolated telecom/industrial voltage-
range power supplies. A high-voltage startup circuit
allows the PWM controller to draw power directly from the
18V to 67V input supply during startup. The switching fre-
quency is internally trimmed to 275kHz ±10%, thus
reducing magnetics and filter components. The
MAX5941A allows an 85% operating duty cycle and can
be used to implement flyback converters. The MAX5941B
limits the operating duty cycle to less than 50% and can
be used in single-ended forward converters. The
MAX5941A/MAX5941B are designed to work with or with-
out an external diode bridge in front of the PD.
The MAX5941A/MAX5941B are available in 16-pin SO
packages.
Applications
IP Phones
Wireless Access Nodes
Internet Appliances
Computer Telephony
Security Cameras
Power Devices in Power-Over-Ethernet/
Power-Over-MDI
Features
o Powered Device Interface
Fully Integrated IEEE 802.3af-Compliant PD
Interface
PD Detection and Programmable Classification
Signatures
Less than 10A Leakage Current Offset During
Detection
Integrated MOSFET for Isolation and Inrush
Current Limiting
Gate Output Allows External Control of the
Internal Isolation FET
Programmable Inrush Current Control
Programmable Undervoltage Lockout
o PWM Controller
Wide Input Range: 18V to 67V
Current-Mode Control
Leading-Edge Blanking
Internally Trimmed 275kHz ±10% Oscillator
Soft-Start
MAX5941A/MAX5941B
IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
19-3069; Rev 4; 6/06
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.
PART
TEMP RANGE
PIN-
PACKAGE
MAX DUTY
CYCLE (%)
MAX5941AESE -40°C to +85°C 16 SO (S16M-6)
85
MAX5941ACSE
0°C to +70°C 16 SO (S16M-6)
85
MAX5941BESE -40°C to +85°C 16 SO (S16M-6)
50
MAX5941BCSE
0°C to +70°C 16 SO (S16M-6)
50
Typical Operating Circuit appears at end of data sheet.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
V+
VCC
NDRV
V-
CS
GND
PGOOD
OUT
TOP VIEW
MAX5941A
MAX5941B
SO
VDD
OPTO
RCL
SS_SHDN
ULVO
GATE
VEE
Pin Configuration
EVALUATION
KIT
AVAILABLE
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5941BESE | 功能描述:电源开关 IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 开关数量:Single 开关配置:SPST 开启电阻（最大值）:7.3 Ohms 串话: 带宽: 开启时间（最大值）:13 ns 关闭时间（最大值）:20 ns 切换电压（最大）: 工作电源电压:8 V to 26 V 最大工作温度:+ 125 C 安装风格:Through Hole 封装 / 箱体:TO-220F-6 |
| MAX5941BESE+ | 功能描述:输入/输出控制器接口集成电路 IEEE 802.3af POE Int/PWM Controller RoHS:否 制造商:Silicon Labs 产品: 输入/输出端数量: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-64 封装:Tray |
| MAX5941BESE+T | 功能描述:输入/输出控制器接口集成电路 IEEE 802.3af POE Int/PWM Controller RoHS:否 制造商:Silicon Labs 产品: 输入/输出端数量: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-64 封装:Tray |
| MAX5941BESE-T | 功能描述:电源开关 IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 开关数量:Single 开关配置:SPST 开启电阻（最大值）:7.3 Ohms 串话: 带宽: 开启时间（最大值）:13 ns 关闭时间（最大值）:20 ns 切换电压（最大）: 工作电源电压:8 V to 26 V 最大工作温度:+ 125 C 安装风格:Through Hole 封装 / 箱体:TO-220F-6 |
| MAX5941BEVKIT | 制造商:Maxim Integrated Products 功能描述:IEEE 802.3AF-COMPLIANT POWER-OVER-ETHERNET IN - Bulk |
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