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Maxim Integrated Products - 12-Channel/8-Channel EEPROM-Programmable System Managers

Numéro de référence MAX16047A
Description 12-Channel/8-Channel EEPROM-Programmable System Managers
Fabricant Maxim Integrated Products 
Logo Maxim Integrated Products 





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MAX16047A fiche technique
19-5250; Rev 0; 4/10
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12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
General Description
The MAX16047A/MAX16049A EEPROM-configurable sys-
tem managers monitor, sequence, and track multiple sys-
tem voltages. The MAX16047A manages up to twelve
system voltages simultaneously, and the MAX16049A
manages up to eight supply voltages. These devices inte-
grate 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
(MAX16047A) or up to eight (MAX16049A) power sup-
plies. Four channels (EN_OUT1–EN_OUT4) support
closed-loop tracking using external series MOSFETs. Six
outputs (EN_OUT1–EN_OUT6) are configurable with
charge-pump outputs to directly drive MOSFETs without
closed-loop tracking.
The MAX16047A/MAX16049A include six programma-
ble 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 MAX16047A/MAX16049A feature two methods of
fault management for recording information during criti-
cal 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 MAX16047A/MAX16049A. These devices
are offered in a 56-pin, 8mm x 8mm TQFN package and
are fully specified from -40°C to +125°C.
Features
o Operates from 3V to 14V
o 1% Accurate 10-Bit ADC Monitors 12/8 Inputs
o 12/8 Monitored Inputs with One Overvoltage/
One Undervoltage/One Selectable Limit
o Nonvolatile Fault Event Logger
o Power-Up and Power-Down Sequencing
Capability
o 12/8 Outputs for Sequencing/Power-Good
Indicators
o Closed-Loop Tracking for Up to Four Channels
o Two Programmable Fault Outputs and One Reset
Output
o Six General-Purpose Input/Outputs Configurable as:
Dedicated Fault Output
Watchdog Timer Function
Manual Reset
o I2C/SMBus-Compatible and JTAG Interface
o EEPROM-Configurable Time Delays and
Thresholds
o 100 Bytes of Internal User EEPROM
o 56-Pin (8mm x 8mm) TQFN Package
o -40°C to +125°C Operating Temperature Range
Servers
Workstations
Storage Systems
Networking/Telecom
Applications
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX16047ATN+
-40°C to +125°C
56 TQFN-EP*
MAX16049ATN+
-40°C to +125°C
56 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed Pad.
SMBus is a trademark of Intel Corp.
Selector Guide appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

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