PM8801 - ST Microelectronics

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

PM8801
Manufacturer

ST Microelectronics
ChipWorker Part#

CW66074204
Category

Power Supply Accessory
Package

HTSSOP-24
Description

PoE-PD Interface and PWM Controller 24Pin HTSSOP Tube
Documentation

Datasheet

PM8801 Global Supplier

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PM8801 Specifications

Attribute	Attribute Value

Part Number	PM8801
Manufacturer	ST Microelectronics
ChipWorker Part#	CW66074204
Category	Power Supply Accessory
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	24 Pin
Case/Package	HTSSOP-24
Number of Channels	2 Channel
Number of Positions	24 Position
Maximum Duty Cycle	80 %
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
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Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2017/01/12
ECCN Code	EAR99

Product Description

The PM8801 integrates a standard compliant 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/PoE+ interface incorporates all the functions required by the IEEE 802.3at including detection, classification, undervoltage lockout (UVLO) and inrush current limitation.
The PM8801 specifically performs IEEE802.3at Layer1 hardware classification, providing an indication of type 2 PSE successful detection to the rest of the system.
The PM8801 has been designed to work with power either from the Ethernet cable connection or from an external power source such as a wall adapter, ensuring prevalence of the auxiliary source with respect to the PoE interface.
The DC/DC section of the PM8801 features a programmable oscillator frequency, an adjustable slope compensation, dual complementary low-side drivers with programmable delay time and internal temperature sensor.
The PM8801 targets high-efficiency conversion at all load conditions supporting flyback, forward, forward active clamp and synchronous rectification.
**Key Features**
IEEE 802.3at compliant PD interface
Works with power supplied from Ethernet LAN cables or from local auxiliary sources
Successful IEEE802.3at Layer1 classification indicator
Integrated 100 V, 0.45 Ω, 1 A hot-swap MOSFET
Accurate 140 mA typ. inrush current level
Programmable classification current
Sleep mode with LED indicator and Maintain Power Signature (MPS)
Precise DC current limit set at 640 mA typ.
Integrated high-voltage startup bias regulator
Thermal shutdown protection
Current mode pulse width modulator
Programmable oscillator frequency
80% maximum duty cycle with internal slope compensation
Support for flyback, forward, forward active clamp, flyback with synchronous rectification

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- Anti-vibration foam
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