Rainbow-electronics MAX16071 Manual do Utilizador descarregar pdf

_______________________________________________________________ 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.

12-Channel/8-Channel, Flash-Configurable System

Monitors with Nonvolatile Fault Registers

MAX16070/MAX16071

General Description

The MAX16070/MAX16071 flash-configurable sys-

tem monitors supervise multiple system voltages. The

MAX16070/MAX16071 can also accurately monitor

(Q2.5%) one current channel using a dedicated high-

side current-sense amplifier. The MAX16070 monitors

up to twelve system voltages simultaneously, and the

MAX16071 monitors up to eight supply voltages. These

devices integrate a selectable differential or single-end-

ed analog-to-digital converter (ADC). Device configura-

tion information, including overvoltage and undervoltage

limits and timing settings are stored in nonvolatile flash

memory. During a fault condition, fault flags and channel

voltages can be automatically stored in the nonvolatile

flash memory for later read-back.

The internal 1% accurate 10-bit ADC measures each

input and compares the result to one overvoltage, one

undervoltage, and one early warning limit that can be

configured as either undervoltage or overvoltage. 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.

Because the MAX16070/MAX16071 support a power-

supply voltage of up to 14V, they can be powered

directly from the 12V intermediate bus in many systems.

The MAX16070/MAX16071 include eight/six program-

mable general-purpose inputs/outputs (GPIOs). GPIOs

are flash configurable as dedicated fault outputs, as a

watchdog input or output, or as a manual reset.

The MAX16070/MAX16071 feature nonvolatile fault mem-

ory for recording information during system shutdown

events. The fault logger records a failure in the internal

flash and sets a lock bit protecting the stored fault data

from accidental erasure. An SMBus™ or a JTAG serial

interface configures the MAX16070/MAX16071. The

MAX16070/MAX16071 are available in a 40-pin, 6mm x

6mm, TQFN package. Both devices are fully specified

from -40NC to +85NC.

Applications

Networking Equipment

Telecom Equipment (Base Stations, Access)

Storage/Raid Systems

Servers

Features

S Operate from 2.8V to 14V

S ±2.5% Current-Monitoring Accuracy

S 1% Accurate 10-Bit ADC Monitors 12/8 Voltage

Inputs

S Single-Ended or Differential ADC for System

Voltage/Current Monitoring

S Integrated High-Side, Current-Sense Amplifier

S 12/8 Monitored Inputs with Overvoltage/

Undervoltage/Early Warning Limit

S Nonvolatile Fault Event Logger

S Two Programmable Fault Outputs and One Reset

Output

S Eight General-Purpose Inputs/Outputs

Configurable as:

Dedicated Fault Outputs

Watchdog Timer Function

Manual Reset

Margin Enable

S SMBus (with Timeout) or JTAG Interface

S Flash Configurable Time Delays and Thresholds

S -40NC to +85NC Operating Temperature Range

19-5003; Rev 0; 10/09

Ordering Information

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

*EP = Exposed pad.

SMBus is a trademark of Intel Corp.

Pin Configuration and Typical Operating Circuits appear at

end of data sheet.

PART TEMP RANGE PIN-PACKAGE

MAX16070ETL+

-40NC to +85NC

40 TQFN-EP*

MAX16071ETL+

-40NC to +85NC

40 TQFN-EP*

1 2 3 4 5 6 ... 50 51

MAX16070/MAX16071 1

Resumo do Conteúdo

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_______________________________________________________________ Maxim Integrated Products 1For pricing, delivery, and ordering information, pleas

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12-Channel/8-Channel, Flash-Configurable System Managers with Nonvolatile Fault RegistersMAX16070/MAX16071Maxim cannot assume responsibility for use o

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