MAX16046A datasheet(1/71 Pages) MAXIM

Part #	MAX16046A

Description	12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers

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Manufacturer	MAXIM [Maxim Integrated Products]

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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

Applications

Servers

Workstations

Storage Systems

Networking/Telecom

12-Channel/8-Channel EEPROM-Programmable

System Managers with Nonvolatile Fault Registers

________________________________________________________________

Maxim Integrated Products

1

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*

19-5251; Rev 0; 4/10

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.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

*

EP = Exposed pad.

EVALUATION

KIT

AVAILABLE

SMBus is a trademark of Intel Corp.

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