Rainbow Electronics MAX16066 - Manual

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12-Channel/8-Channel, Flash-Configurable System
Managers with Nonvolatile Fault Registers
MAX16065/MAX16066
General Description
The MAX16065/MAX16066 flash-configurable system
managers monitor and sequence multiple system volt-
ages. The MAX16065/MAX16066 can also accurately
monitor (±2.5%) one current channel using a dedicated
high-side current-sense amplifier. The MAX16065 man-
ages up to twelve system voltages simultaneously, and
the MAX16066 manages up to eight supply voltages.
These devices integrate a selectable differential or sin-
gle-ended analog-to-digital converter (ADC) and con-
figurable outputs for sequencing power supplies. Device
configuration information, including overvoltage and
undervoltage limits, timing settings, and the sequenc-
ing 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 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 MAX16065/MAX16066 support a power-
supply voltage of up to 14V, they can be powered
directly from the 12V intermediate bus in many systems.
The integrated sequencer provides precise control over
the power-up and power-down order of up to twelve
(MAX16065) or up to eight (MAX16066) power supplies.
Eight outputs (EN_OUT1–EN_OUT8) are configurable
with charge-pump outputs to directly drive external
n-channel MOSFETs.
The MAX16065/MAX16066 include eight/six programma-
ble general-purpose inputs/outputs (GPIO_s). GPIO_s
are flash configurable as dedicated fault outputs, as a
watchdog input or output, or as a manual reset.
The MAX16065/MAX16066 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 MAX16065/MAX16066. The
MAX16065 is available in a 48-pin, 7mm x 7mm, TQFN
package, and the MAX16066 is available in a 40-pin,
6mm x 6mm, TQFN package. Both devices are fully
specified from -40NC to +85NC.
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 Power-Up and Power-Down Sequencing
Capability
S Independent Secondary Sequence Block
S 12/8 Outputs for Sequencing/Power-Good
Indicators
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
Applications
Networking Equipment
Telecom Equipment (Base Stations, Access)
Storage/Raid Systems
Servers
19-4717; Rev 0; 7/09
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
MAX16065ETM+ -40NC to +85NC 48 TQFN-EP*
MAX16066ETL+ -40NC to +85NC 40 TQFN-EP*