集成的IEEE 802.3af标准的PoE - PD接口和PWM控制器,支持外部电源 Integrated IEEE 802.3af compliant PoE-PD interface and PWM controller with support of external source
The PM8800A integrates a standard power over Ethernet PoE interface and a current mode PWM controller to simplify the design of the power supply sections of all powered devices.
The PoE interface incorporates all the functions required by the IEEE 802.3af including detection, classification, under-voltage lockout UVLO and in-rush current limitation.
PM8800A specifically targets PD with extended power requirement with respect to the limit imposed by the 802.3af standard, embedding a hot-swap MOSFET capable of sustaining twice the current of the 802.3af standard with a programmable DC current limit.
The integrated switching regulator has been designed to work with power either form the Ethernet cable connection or from an external power source such as AC adapter.
The DC-DC section of the PM8800A features a programmable oscillator frequency, soft-start, slope compensation and embeds a voltage output error amplifier allowing use in both isolated and non isolated configuration.
**Key Features**
频率 440 kHz
输出电流 800 mA
供电电流 3 mA
通道数 1
针脚数 16
占空比 80 %
输入电压Max 100 V
输出功率Max 12.95 W
额定功率Max 12.95 W
最大占空比 80 %
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 48 V
输入电压 11.5 V
安装方式 Surface Mount
引脚数 16
封装 HTSSOP-16
高度 1 mm
封装 HTSSOP-16
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
PM8800ATR ST Microelectronics 意法半导体 | 当前型号 | 当前型号 |
PM8800A 意法半导体 | 完全替代 | PM8800ATR和PM8800A的区别 |