The SMH4042A has reached END OF LIFE and is no longer in production.



SUMMIT Microelectronics: Product Summary: SMH4042A 


A complete index to all Product Summary pages

Download/view the entire SMH4042A data sheet

Download the GUI Programming Software 4042ASetup.ZIP

Download/view a partial listing of suitable MOSFETs for use with the SUMMIT SMH4042 Hot Swap Controller

AA06 SMH4042 with Supply Over-Voltage Shutdown

AA11 Sequencing 3.3V and 1.5V with the SMH4042

Applications Note 15: CompactPCI® Hot Swap Design Solutions

Applications Note 09: Using the S39421 as the Primary Control Circuit on VME Live Insertion Card

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SMH4042A BLOCK DIAGRAM (PDF pg 1): Summit Microelectronics, Inc.
SMH4042A BLOCK DIAGRAM (PDF pg. 1)
 SMH4042A PINOUT (PDF pg 2): Summit Microelectronics, Inc.
SMH4042A PINOUTS  (PDF pg. 2)


SMH4042A
Distributed Power Hot-Swap Controller for CompactPCI®

http://www.picmg.org/

FEATURES

Full Voltage Control for Hot Swap Applications

15V High Side Driver Generation Allows use of Low On Resistance N-Channel FETs

Under-Voltage Lockout

Electronic Circuit Breakers

Card Insertion Detection

Host VCC Detection

Card Voltage Sequencing

Flexible Reset Control

Low Voltage Resets

Host Reset Filtering

Soft Reset

Adjustable Power On Slew Rate

Supports Mixed Voltage Cards

Two Wire I2C Serial Data Interface

4k-Bit E2PROM Memory


DESCRIPTIION

The SMH4042A is a fully integrated hot swap controller that provides complete power control for add-in cards ranging in use for basic hot swap systems to high availability CompactPCI• systems. It detects proper insertion of the card and senses valid supply voltage levels at the backplane. Utilizing external low on-resistance N-channel MOSFETs, card power is ramped by two high-side driver outputs that are slew-rate limited at 250V/s.

The SMH4042A continuously monitors the host supplies, the add-in card supplies and the add-in card current. If the SMH4042A detects the current is higher than the programmed value it will shut down the MOSFETs and issue a fault status back to the host.

The internal 512x8 E2PROM can be used as configurationmemory for the individual card or as general purpose memory. The proprietary Data Download mode provides a more direct interface to the E2PROM, simplifying access by the add-in card's controller or ASIC.

Programming of configuration, control and calibration values by the user can be simplified with the interface adapter and Windows GUI software obtainable from Summit Microelectronics.
[continued in the PDF]




ORDERING INFORMATION
SMH4042A Ordering Information - Summit Microelectronics, Inc.


SUMMIT Microelectronics, Inc. reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. SUMMIT Microelectronics, Inc. assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained herein reflect representative operating parameters, and may vary depending upon a user's specific application. While the information in this publication has been carefully checked, SUMMIT Microelectronics, Inc. shall not be liable for any damages arising as a result of any error or omission.

SUMMIT Microelectronics, Inc. does not recommend the use of any of its products in life support or aviation applications where the failure or malfunction of the product can reasonably be expected to cause any failure of either system or to significantly affect their safety or effectiveness. Products are not authorized for use in such applications unless SUMMIT Microelectronics, Inc. receives written assurances, to its satisfaction, that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; and (c) potential liability of SUMMIT Microelectronics, Inc. is adequately protected under the circumstances.

This document supersedes all previous versions.

I2C is a trademark of Philips Corporation.
PICMG® & CompactPCI® are trademarks of the PCI Industrial Computer Manufacturer's Group.


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