Management Device. MPM85000 Datasheet
Automotive Power Management Device
Low-cost, single-chip solution for Automotive Power
Supports low-power Sleep Mode; wakeup due to:
— LIN bus / ECL activity
— Local event (e.g. ON switch)
— MOST Network optical/electrical activity
— Switch-To-Power (STP) event
— Configurable voltage trip points
— Configurable wakeup from Sleep Mode voltage
Integrated LIN transceiver
— LIN 2.0 compliant
— Transmission rates up to 20 kHz
— MOST Electrical Control Line (ECL) compliant
— Adjustable slew rate for reduced EMI
— Over-temperature and low-voltage protection
— Short-circuit protection
— Optional TXD timeout (MOST ECL compliant)
Optional I2C Control Port for configuration/status
Programmable Precision Reset Generator
3.3 V MicroPower Regulator for continuous power
requirements (e.g. Rx PHY, EOC/FOR, INIC
Temperature monitoring with programmable alerts
User available data storage (while in Sleep Mode)
User available One-Time Programmable (OTP)
permanent data storage
Direct support for MOST INIC power status pins
24-pin 4x4 mm2 QFN package with exposed paddle
Temperature range: -40 °C to +110 °C
The MPM85000 is an automotive system power
management device intended for integration into an
Electrical Control Unit (ECU). The MPM85000 includes
a very low-power Sleep Mode, supporting wakeup
transitions to Active Mode due to multiple signals.
Wakeup event signal detection and qualification
includes both glitch protection and power supply
validation. Qualified inputs can generate interrupts for
an External Host Controller (EHC).
The MPM85000 supports all MOST speed grades
(MOST25, MOST50, and MOST150). In addition to
system power management, other MOST-related
features are supported, including: direct connection to
power status inputs of MOST Intelligent Network
Interface Controllers (INICs), MOST50 electrical
network (ePHY) activity detection, and ECL support.
In Active Mode, the MPM85000 includes a fault-tolerant
keep-alive hardware signal (or software bit) that can be
used by an external device to keep power enabled until
the application is ready to power-down. The MPM85000
also provides continuous monitoring of the application
battery voltage and ECU temperature, and can alert the
EHC when user-programmed thresholds are crossed.
For robust fault tolerance, stuck wakeup events can be
ignored, allowing the MPM85000 to revert to Sleep
Mode. The MPM85000 detects recovery from stuck
conditions and re-enables a signal’s ability to wakeup
MPM85000 Data Sheet
Copyright © 2012 SMSC.
24-pin QFN (Lead-Free, RoHS Compliant), Tray
24-pin QFN (Lead-Free, RoHS Compliant), Tape and Reel
This table represents valid part numbers at the time of printing and may not represent parts that are cur-
rently available. For the latest list of valid ordering numbers for this product, please contact the nearest
For more information on SMSC automotive products, including integrated circuits, software, and MOST
development tools and modules, visit our web site: http://www.smsc-ais.com. Direct contact information is
available at: http://www.smsc-ais.com/offices.
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80 Arkay Drive
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Contact information for technical support is available at: http://www.smsc-ais.com/contact.
Copyright © 2012 SMSC. All rights reserved.
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a document can be found in the footer of every page. This document supersedes and replaces all information previously supplied. The technical informa-
tion in this document loses its validity with the next edition. Although the information is believed to be accurate, no responsibility is assumed for inaccura-
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MPM85000 Data Sheet
Copyright © 2012 SMSC.