General Description
The MAX16047/MAX16049 EEPROM-configurable system managers monitor, sequence, and track multiple system voltages. The MAX16047 manages up to twelve system voltages simultaneously, and the MAX16049 manages up to eight supply voltages. These devices integrate an analog- to-digital converter (ADC) for monitoring supply voltages, and configurable outputs for sequencing and tracking supplies (during power-up and power-down).
Nonvolatile EEPROM registers are configurable for storing upper and lower voltage limits, setting timing and sequencing requirements, and for storing critical fault data for read back following failures.
An internal 1% accurate 10-bit ADC measures each input and compares the result to one upper, one lower, and one selectable upper or lower limit. A fault signal asserts when a monitored voltage falls outside the set limits. Up to three independent fault output signals are configurable to assert under various fault conditions.
The integrated sequencer/tracker allows precise control over the power-up and power-down order of up to twelve (MAX16047) or up to eight (MAX16049) power supplies.
Four channels (EN_OUT1–EN_OUT4) support closedloop tracking using external series MOSFETs. Six outputs (EN_OUT1–EN_OUT6) are configurable with chargepump outputs to directly drive MOSFETs without closedloop tracking.
The MAX16047/MAX16049 include six programmable general-purpose inputs/outputs (GPIOs). In addition to serving as EEPROM-configurable I/O pins, the GPIOs are also configurable as dedicated fault outputs, as a watchdog input or output (WDI/WDO), or as a manual reset (MR).
The MAX16047/MAX16049 feature two methods of fault management for recording information during critical fault events. The fault logger records a failure in the internal EEPROM and sets a lock bit protecting the stored fault data from accidental erasure.
An I2C/SMBus™-compatible or a JTAG serial interface configures the MAX16047/MAX16049. These devices are offered in a 56-pin 8mm x 8mm TQFN package and are fully specified from -40°C to +85°C.

Features
* Operates from 3V to 14V
* 1% Accurate 10-Bit ADC Monitors 12/8 Inputs
* 12/8 Monitored Inputs with One Overvoltage/ One Undervoltage/One Selectable Limit
* Nonvolatile Fault Event Logger
* Power-Up and Power-Down Sequencing Capability
* 12/8 Outputs for Sequencing/Power-Good Indicators
* Closed-Loop Tracking for Up to Four Channels
* Two Programmable Fault Outputs and One Reset Output
* Six General-Purpose Input/Outputs Configurable as:
Dedicated Fault Output
Watchdog Timer Function
Manual Reset
* I2C/SMBus-Compatible and JTAG Interface
* EEPROM-Configurable Time Delays and Thresholds
* 100 Bytes of Internal User EEPROM
* 56-Pin (8mm x 8mm) TQFN Package
* -40°C to +85°C Operating Temperature Range

MAX16047ETN
MAX16049ETN

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DESCRIPTION
PD64012G is a twelve-port, mixed-signal, high-voltage Power over Ethernet PSE Manager. The IC allows the detection of IEEE 802.3af-2003 powered devices, ensuring safe power feeding and removal over Ethernet ports. With full digital control via a serial communication interface and a minimum of external components, the IC integrates in multi-port and highly populated Ethernet
switches.
The PD64012G has two possible working configurations: an Automatic stand-alone mode, for basic PoE functions, and an Enhanced mode, for extended functions and added flexibility with the presence of the PD63000G and PD83000G MCU’s.

FEATURES
IEEE 802.3af-2003 and IEEE802.3at-ready
* Compliant with IEEE 802.3af and pre-standard PD’s
* 12-ports standalone PoE control
* Power classification with bypass option
* AC disconnect
* DC disconnect with DC modulation
* Supports RFC3621

BENEFITS
* Freedom to power all PoE PD’s including Cisco’s inline power
* Highest integration on the market, enabling the lowest real-estate occupation
* Reliable and simple AC implementation
* Supports low power devices
* Enables integration in Managed Switches

TAG Manager, port

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