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MIC2358YLQ

Description
POWER SUPPLY SUPPORT CKT, PQFP64
CategoryPower/power management    The power supply circuit   
File Size420KB,29 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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MIC2358YLQ Overview

POWER SUPPLY SUPPORT CKT, PQFP64

MIC2358YLQ Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerMicrochip
package instruction10 X 10 MM, LEAD FREE, LQFP-64
Reach Compliance Codecompli
ECCN codeEAR99
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeS-PQFP-G64
JESD-609 codee3
length10 mm
Humidity sensitivity level3
Number of channels1
Number of functions1
Number of terminals64
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeLFQFP
Package shapeSQUARE
Package formFLATPACK
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.6 mm
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)4.5 V
Nominal supply voltage (Vsup)5 V
surface mountYES
Temperature levelCOMMERCIAL
Terminal surfaceMATTE TIN
Terminal formGULL WING
Terminal pitch0.5 mm
Terminal locationQUAD
Maximum time at peak reflow temperature40
width10 mm
MIC2358YLQ
IEEE 802.3af Octal Power Sourcing
Equipment Controller
General Description
The MIC2358YLQYLQ octal network power controller is
designed for use in IEEE 802.3af-compliant power-
sourcing equipment (PSE). The device provides
standardized powered devices (PD) detection,
classification, current-limit, and monitoring of both DC
and AC maintain power signatures.
The MIC2358YLQYLQ can operate autonomously or be
controlled by software through a SMBus-compatible
interface. Its five address inputs support 32 unique
MIC2358YLQ addresses allowing control and monitoring
up to 256 powered Ethernet ports (32 MIC2358YLQ
devices) by an external management application.
For each port, the MIC2358YLQ uses external N-
Channel power FETs and current sense resistors to
deliver and monitor power. State machines have been
incorporated into this device for complete configuration,
fault reporting, and status on a per-port basis, including
port voltage and current.
The MIC2358YLQ also implements Micrel’s shared
power management and port prioritization which offers
more flexible allocation of available power among the
ports.
Throughout this document the term 802.3af is
synonymous for IEEE Std 802.3-2005.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
Fully compliant with the IEEE 802.3af Power-over-
Ethernet standard
Controls eight independent 48V-powered Ethernet
ports
Powered port attributes:
– Up to 15.4W delivered per port
– Input over-voltage protection (OVP)
– Powered Device detection and classification
– Active current limit
– Powered Device AC and DC disconnect
supported
Operates autonomously or by SMBus control
5-bit programmable digital addressing allows control
of up to 256 Ethernet powered ports
Hardware fault interrupt output
Available in a Pb-free 64-pin LQFP package
Applications
IEEE 802.3af Compliant Enterprise Switches/Hubs
IEEE 802.3af Compliant Endpoint and Midspan
Power Sources
PSE Power Injectors
IP Phone Systems
DTE Power Distribution
_________________________________________________________________________________________________________
Ordering Information
Part Number
MIC2358YLQYLQ
Temperature Range
0 °C to +70 °C
Pb-Free Package
64-Pin LQFP
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
July 2010
M9999-070810

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Description POWER SUPPLY SUPPORT CKT, PQFP64 POWER SUPPLY SUPPORT CKT, PQFP64 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP64
Maker Microchip - Microchip
package instruction 10 X 10 MM, LEAD FREE, LQFP-64 - 10 X 10 MM, 1.40 MM HEIGHT, LEAD FREE, LQFP-64
Reach Compliance Code compli - compli
ECCN code EAR99 - EAR99
Adjustable threshold NO - NO
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT - POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code S-PQFP-G64 - S-PQFP-G64
Number of channels 1 - 1
Number of functions 1 - 1
Number of terminals 64 - 64
Maximum operating temperature 70 °C - 70 °C
Package body material PLASTIC/EPOXY - PLASTIC/EPOXY
encapsulated code LFQFP - QFP
Package shape SQUARE - SQUARE
Package form FLATPACK - FLATPACK
Certification status Not Qualified - Not Qualified
Maximum supply voltage (Vsup) 5.5 V - 5.5 V
Minimum supply voltage (Vsup) 4.5 V - 4.5 V
Nominal supply voltage (Vsup) 5 V - 5 V
surface mount YES - YES
Temperature level COMMERCIAL - COMMERCIAL
Terminal form GULL WING - GULL WING
Terminal location QUAD - QUAD
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