Summit Microelectronics - Applications Note 22

Tech Support: Applications Note 22
(Page 3 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 R16 - I²C Power On - Register 16 is not a physical register.

Registers 16 and 17 are virtual addresses. An I²C write (data = XXh) forces the desired action. A read always returns FFh.

The I²C Power On button is only available if I²C Power On/Off is Enabled in Register 18, D1.

Register R17 - I²C Power Off - Register 17 is not a physical register.

Registers 16 and 17 are virtual addresses. An I²C write (data = XXh) forces the desired action. A read always returns FFh.

The I²C Power Off button is only available if I²C Power On/Off is Enabled in Register 18, D1.

Note 1. - Bits D5, D6 and D7 are reserved bits for Status Tracking Code identification and future updates.

I²C Interface Power-On/Off command feature (disabled), MR# can be "Required" or "Not Required". I²C Interface Power-On/Off command feature (Enabled). If Power On/Off is enabled, then MR# is never required.

Fault Latching (disabled). Fault Latching (enabled). IRQ Power down setting is available when Fault Latching is enabled.

Bus-Side Over Voltage Options (Register 18, bit 4).

Bus-Side Over Voltage Options (Register 18, bit 3).

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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