Summit Microelectronics - Applications Note 22

Tech Support: Applications Note 22
(Page 2 of 5):
SMT4004 Quad Tracking Power Supply Manager

SPECIAL NOTE: Because of the length of this Application Note, it has been divided into five pages to accomodate faster loading time. You may use the menu near the bottom of the page to jump to any of the five pages.

Register R0C, R0D, R0E, R0F - Card- Side Under-Voltage (UV2) Threshold Enable and Under-Voltage (UV2) Offset

Registers 0C, 0D, 0E and 0F are identical. These registers will either enable or disable the associated power management channels and whether the channels are set as soft start or tracking channels. Their contents also determine whether the card-side under-voltage (UV2) capabilities are enabled and the contents establish the card-side under-voltage (UV2) offset value for the VO1, VO2, VO3 and VO4 inputs, respectively.

Register R10 - Addressing and Slew Rate Control

Configuration Register 10 is used to configure the I²C addressing protocol for the SMT4004. Bit 7 determines whether the device will respond with an acknowledge to any bus request addressing its device type identifier, or whether it will only respond if the A2, A1 and A0 bits match the biasing of the external pins. Bit 6 selects the device type identifier to be used for the memory array. Register 10 also configures Tracker differential IRQ#s and slew rate control.

Notes 1. - This option is not recommended since the other channels that track the faulty channel should all shut down.

Application Note 22
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NOTICE

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.

Revision 3.0 - This document supersedes all previous versions and covers Status Tracking Codes up to 10 and Windows GUI revision 2.39.3 and later. Please check the Summit Microelectronics, Inc. web site at www.summitmicro.com for data sheet updates.

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