The MAX6872/MAX6873 EEPROM-configurable, multivoltage
supply sequencers/supervisors monitor several
voltage detector inputs and four general-purpose logic
inputs. The MAX6872/MAX6873 feature programmable
outputs for highly configurable power-supply sequencing
applications. The MAX6872 features six voltage detector
inputs and eight programmable outputs, while the
MAX6873 features four voltage detector inputs and five
programmable outputs. Manual reset and margin disable
inputs offer additional flexibility.
All voltage detectors offer two configurable thresholds
for undervoltage/overvoltage or dual undervoltage
detection. One high-voltage input (IN1) provides detector
threshold voltages from +2.5V to +13.2V in 50mV
increments, or from +1.25V to +7.625V in 25mV increments.
A bipolar input (IN2) provides detector threshold
voltages from ±2.5V to ±15.25V in 50mV increments, or
from ±1.25V to ±7.625V in 25mV increments. Positive
inputs (IN3–IN6) provide detector threshold voltages
from +1V to +5.5V in 20mV increments, or from +0.5V
to +3.05V in 10mV increments.
Programmable output stages control power-supply
sequencing or system resets/interrupts. Programmable
output options include: active-high, active-low, open drain,
weak pullup, push-pull, and charge pump.
Programmable timing delay blocks configure each output
to wait between 25µs and 1600ms before deasserting. A
fault register logs the condition that caused each output
to assert (undervoltage, overvoltage, manual reset, etc.).
An SMBus™-/I²C-compatible, serial data interface
programs and communicates with the configuration
EEPROM, the configuration registers, the internal 4kb
user EEPROM, and the fault registers of the
MAX6872/MAX6873.
The MAX6872/MAX6873 are available in a 7mm x 7mm
x 0.8mm, 32-pin TQFN package and operate over
the extended -40°C to +85°C temperature range.
Key Features
Applications/Uses
Six (MAX6872) or Four (MAX6873) Configurable Input Voltage Detectors
One High-Voltage Input (+1.25V to +7.625V or +2.5V to +13.2V Thresholds)
One Bipolar Voltage Input (±1.25V to ±7.625V or ±2.5V to ±15.25V Thresholds)
Four (MAX6872) or Two (MAX6873) Positive Voltage Inputs (+0.5V to +3.05V or +1V to +5.5V Thresholds)
Four General-Purpose Logic Inputs
Two Configurable Watchdog Timers
Eight (MAX6872) or Five (MAX6873) Programmable Outputs
Active-High, Active-Low, Open Drain, Weak Pullup, Push-Pull, Charge-Pump
Timing Delays from 25µs to 1600ms
Margining Disable and Manual Reset Controls
4kb Internal User EEPROM
Endurance: 100,000 Erase/Write Cycles
Data Retention: 10 Years
I²C/SMBus-Compatible Serial Configuration/Communication Interface
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-8 of 8
MAX6872
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Status
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
MAX6872ETJ
Active
TQFN;32 pin;50 mm²
Outline Drawing: 21-0144 (PDF)
Land Pattern: 90-0125 (PDF)
Use pkgcode/variation: T3277-2*
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