MAX16046A Datasheet, PDF (1/71 Pages) Maxim Integrated Products – 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers

19-5251; Rev 0; 4/10
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12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
General Description
The MAX16046A/MAX16048A EEPROM-configurable sys-
tem managers monitor, sequence, track, and margin mul-
tiple system voltages. The MAX16046A manages up to
twelve system voltages simultaneously, and the
MAX16048A manages up to eight supply voltages. These
devices integrate an analog-to-digital converter (ADC) for
monitoring supply voltages, digital-to-analog converters
(DAC) for adjusting supply voltages, and configurable out-
puts 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 readback 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
(MAX16046A) or up to eight (MAX16048A) 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 MAX16046A/MAX16048A include twelve/eight inte-
grated 8-bit DAC outputs for margining power supplies
when connected to the trim input of a point-of-load
(POL) module.
The MAX16046A/MAX16048A include six programmable
general-purpose inputs/outputs (GPIOs). GPIOs are
EEPROM configurable as dedicated fault outputs, as a
watchdog input or output (WDI/WDO), as a manual reset
(MR), or for margin control inputs.
The MAX16046A/MAX16048A feature two methods of
fault management for recording information during sys-
tem shutdown 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 MAX16046A/MAX16048A. These devices
are offered in a 56-pin, 8mm x 8mm TQFN package or a
64-pin, 10mm x 10mm TQFP package and are fully speci-
fied 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 1 Overvoltage/
1 Undervoltage/1 Selectable Limit
o 12/8 8-Bit DAC Outputs for Margining or Voltage
Adjustments
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
Margin Enable Input
o I²C/SMBus-Compatible and JTAG Interface
o EEPROM-Configurable Time Delays, Thresholds,
and DAC Outputs
o 100 Bytes of Internal User EEPROM
o -40°C to +125°C Operating Temperature Range
Servers
Workstations
Storage Systems
Networking/Telecom
Applications
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX16046ACB+
-40°C to +125°C 64 TQFP-EP*
MAX16046ATN+
-40°C to +125°C 56 TQFN-EP*
MAX16048ACB+
-40°C to +125°C 64 TQFP-EP*
MAX16048ATN+
-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.
________________________________________________________________ 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.