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SMM105/205/605/665 ADOC Tutorial and Performance Summary

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LDO PULSE LOAD TEST RESULTS: 1.8V LDO Step Load Response with/without the ADOC function enabled (Figs 6-8). A pulsed load of 0.2A-5.0A of duration 400uS, duty cycle of 20% is applied to the 2.0V DC-DC converter to establish the unit's behavior (Fig. 6). This same load is used in subsequent testing of the 1.8V LDO output (Figures 7 & 8).

Figure 6: Pulsed load (0.2A-5A) Austin 2.0V DC-DC converter Channel 1 (Yellow Trace) = 2.0V DC-DC converter output voltage, 100mV/Div, AC-Coupled Channel 2 (Green Trace) = 2.0V DC-DC converter output current, 2A/Div, DC-Coupled		Figure 8: Pulsed load 1.8V LDO 0.2A-5A without ADOC Function enabled. Channel 1 (Yellow Trace) = 1.8V LDO output voltage, 100mV/Div, AC-Coupled Channel 2 (Green Trace) = 1.8V LDO output current, 2A/Div, DC-Coupled
Figure 7: Pulsed load 1.8V LDO 0.2A-5A with ADOC Function Channel 1 (Yellow Trace) = 1.8V LDO output voltage, 100mV/Div, AC-Coupled Channel 2 (Green Trace) = 1.8V LDO output current, 2A/Div, DC-Coupled

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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 1.0 - This document supersedes all previous. Please check the Summit Microelectronics, Inc. web site at www.summitmicro.com for updates. I2C is a trademark of Philips Corporation.

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