MAX16067 Datasheet, PDF (1/47 Pages) Maxim Integrated Products – 6-Channel, Flash-Configurable System Manager with Nonvolatile Fault Registers

19-5028; Rev 0; 10/09
6-Channel, Flash-Configurable System Manager
with Nonvolatile Fault Registers
General Description
The MAX16067 flash-configurable system manager
monitors and sequences multiple system voltages. The
MAX16067 manages up to six system voltages simulta-
neously. The MAX16067 integrates an analog-to-digital
converter (ADC) and configurable outputs for sequenc-
ing power supplies. Device configuration information,
including overvoltage and undervoltage limits, time
delay settings, and the sequencing order is 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 readback.
The internal 1% accurate, 10-bit ADC measures each
input and compares the result to one overvoltage and
one undervoltage limit. A fault signal asserts when a
monitored voltage falls outside the set limits.
The MAX16067 supports a power-supply voltage of up to
14V and can be powered directly from the 12V interme-
diate bus in many systems.
The integrated sequencer provides precise control over
the power-up and power-down order of up to six power
supplies. Three outputs (EN_OUT1 to EN_OUT3) are
configurable with charge-pump outputs to directly drive
external n-channel MOSFETs.
The MAX16067 includes six programmable general-
purpose inputs/outputs (GPIOs). GPIOs are flash con-
figurable as a fault output, as a watchdog input or output,
or as a manual reset.
The MAX16067 features nonvolatile fault memory 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
MAX16067. The MAX16067 is available in a 32-pin, 5mm
x 5mm, TQFN package and is fully specified over the
-40NC to +85NC extended temperature range.
Features
S Operates from 2.8V to 14V
S 1% Accurate, 10-Bit ADC Monitors 6 Voltage
Inputs
S Analog EN Monitoring Input
S 6 Monitored Inputs with Overvoltage and
Undervoltage Limits
S Nonvolatile Fault Event Logger
S Power-Up and Power-Down Sequencing
Capability
S 6 Outputs for Sequencing/Power-Good Indicators
S 3 Configurable Charge-Pump Outputs
S Six General-Purpose Inputs/Outputs Configurable
as:
Dedicated Fault Output
Watchdog Timer Function
Manual Reset
SMBus Alert
Fault Propagation Input/Output
S SMBus and JTAG Interface
S Supports Cascading with MAX16065/MAX16066
S Flash-Configurable Time Delays and Thresholds
S -40NC to +85NC Extended Operating Temperature
Range
Applications
Networking Equipment
Telecom Equipment (Base Stations, Access)
Storage/Raid Systems
Servers
Typical Operating Circuit appears at end of data sheet.
Ordering Information/Selector Guide
PART
PIN-PACKAGE
VOLTAGE-
DETECTOR INPUTS
GENERAL-PURPOSE
INPUTS/OUTPUTS
MAX16067ETJ+
32 TQFN-EP*
6
6
Note: This device is specified over the -40NC to +85NC extended temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
SEQUENCING
OUTPUTS
6
SMBus is a trademark of Intel Corp.
________________________________________________________________ Maxim Integrated Products   1
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