DESCRIPTION
The MP8020 is an IEEE 802.3af/at/btcompliant,
Power over Ethernet (PoE), powered
device (PD). The device supports all the
functions of IEEE 802.3af/at/bt, including
detection, 5-event classification, input current
(IIN) control, and an internal 100V hot-swap
MOSFET.
The MP8020 provides configurable inrush
current limiting during start-up and operation
current limiting when the internal MOSFET is
fully turned on. The GATE1 driver supports the
use of an external low on resistance (RDS(ON))
MOSFET for high-power design. A high power
good (PG) signal enables the use of a
downstream DC/DC converter. The MP8020
also provides automatic maintain power
signature functionality under light loads.
An auxiliary power input detector (AUX) and
GATE2 driver provide a smooth power switch
from the power-sourcing equipment (PSE) to an
auxiliary wall adapter with low power loss. The
MP8020 also features a built-in detection
resistor, thermal protection, and a wide input
under-voltage lockout (UVLO) hysteresis.
The MP8020 is available in a QFN-18
(3mmx5mm) package.

FEATURES
 Compliant with 802.3af/at/bt Specifications
 Internal Detection Resistor
 Supports Up to 71.3W Powered Device
(PD) Operation
 Internal Hot-Swap MOSFET for ≤51W
Design
 External MOSFET with GATE1 for >51W
Design
 Auxiliary Power Supply from >8.8V Adapter
 GATE2 N-Channel MOSFET Driver for
Adapter Supply
 Configurable Current Limit
 Automatic Maintain Power Signature
 PG and Allocated Power Type Indicators
 150°C Over-Temperature Protection (OTP)
 Available in a QFN-18 (3mmx5mm)
Package

APPLICATIONS
 IEEE 802.3 af/at/bt-Compliant Devices
 Security Cameras
 Video and VoIP Phones
 WLAN Access Points
 Internet of Things (IoT) Devices
 Pico Base Stations