SMM205

SMM205 Preliminary Information1 (See Last Page) Dual Channel Supply Voltage Marginer and Active DC Output Controller FEATURES & APPLICATIONS Extremely accurate (±0.1%) Active DC Output Control (ADOC) ADOC Automatically adjusts supply output voltage level under all load conditions Capable of margining supplies with trim inputs using either positive or negative trim pin control Wide Margin/ADOC range from 0.3V to VDD Uses either an internal or external VREF Operates from any intermediate bus supply from 8V to 15V and from 2.7V to 5.5V Programmable START and READY pins Two programmable general purpose monitor sensors – UV and OV with FAULT Output Flag General Purpose 1k EEPROM with Write Protect I2C 2-wire serial bus for programming configuration and monitoring status. 28 lead QFN package INTRODUCTION The SMM205 actively controls the output voltage level of two DC/DC converters that use a Trim or VADJ/FB pin to adjust the output. An Active DC Output Control (ADOC) feature is used during normal operation to maintain extremely accurate settings of supply voltages and, during system test, to control margining of the supplies using I2C commands. Total accuracy with a ±0.1% external reference is ±0.2%, and ±0.5% using the internal reference. The device can margin supplies with either positive or negative trim pin control within a range of 0.3V to VDD. The SMM105 supply can be from 12V, 8V, 5V or 3.3V to as low as 2.7V to accommodate any intermediate bus supply...