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SMM766 Dataheets PDF



Part Number SMM766
Manufacturers Summit Microelectronics
Logo Summit Microelectronics
Description Six-Channel Active DC Output Controller
Datasheet SMM766 DatasheetSMM766 Datasheet (PDF)

SMM766 Six-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link Preliminary Information 1 (See Last Page) FEATURES & APPLICATIONS • Extremely accurate (±0.2%) Active DC Output Control (ADOC™) • Sequence-Link™ provides sequencing of up to 48 channels • ADOC automatically adjusts supply output voltage level under all DC load conditions • Monitors, controls, and margins up to 6 supplies from 0.3V to 5.5V with 1.25V Vref www.DataSheet4U.com • Programmable power-o.

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SMM766 Six-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link Preliminary Information 1 (See Last Page) FEATURES & APPLICATIONS • Extremely accurate (±0.2%) Active DC Output Control (ADOC™) • Sequence-Link™ provides sequencing of up to 48 channels • ADOC automatically adjusts supply output voltage level under all DC load conditions • Monitors, controls, and margins up to 6 supplies from 0.3V to 5.5V with 1.25V Vref www.DataSheet4U.com • Programmable power-on/-off sequencing • Operates from any intermediate bus supply from 6V to 14V and from 2.7V to 5.5V • Monitors 12V input VDD and temperature sensor • Wide margin/ADOC range from 0.3V to VDD • Monitors two general-purpose 10-bit ADC inputs • I2C 2-wire serial bus for programming configuration and monitoring status, including 10-bit ADC conversion results • 2 programmable Under Voltage (UV) and Over Voltage (OV) threshold limits for each of 11 monitored inputs • 2k-bit general purpose nonvolatile memory Applications • Monitor/control distributed and POL supplies • Multi-voltage processors, DSPs, ASICSs used in telecom, CompactPCI or server systems INTRODUCTION The SMM766 is an Active DC Output power supply Controller (ADOCTM) that monitors, margins, and cascade sequences. The ADOC feature is unique and maintains extremely accurate settings of system supply voltages to within ±0.2% under full load. The SMM766 actively controls up to 6 DC/DC converters and can be linked with up to 7 other Sequence-Link™ devices to accommodate sequencing of up to 48 channels. Control of the DC-DC converters is accomplished through the use of a Trim or Regulator VADJ/FB pin to adjust the output voltage. For system test, the part also controls margining of the supplies using I2C commands. It can margin supplies with either positive or negative control within a range of 0.3V to VDD, depending on the specified range of the converter. The SMM766 also intelligently sequences or cascades the power supplies on and off in any order using enable outputs with programmable polarity. It can operate off any intermediate bus supply ranging from 6V to 14V or from 5.5V to as low as 2.7V. The part monitors 6 power supply channels as well as VDD, 12V input, two general-purpose analog inputs and an internal temperature sensor using a 10-bit ADC. The 10-bit ADC can measure the value on any one of the monitor channels and output the data via the I2C bus. A host system can communicate with the SMM766 status register, margining and utilize 2K-bits of nonvolatile memory. SIMPLIFIED APPLICATIONS DRAWING 12VIN (+6V to +14V Range) 3.3VIN (+2.7V to +5.5V Range) 12VIN VDD CAPA TRIM_CAPA SDA SCL A2 SEQ_LINK External or Internal TEMP SENSOR TRIMA PUPA VMA CAPB TRIM_CAPB AIN2 HEALTHY VREF MR# 2 of 6 DC-DC Converters shown DC/DC Converter D, F VIN DC/DC Converter B Vout TRIM ON/OFF 12V DC/DC Converter C, E VIN DC/DC Converter A Vout TRIM ON/OFF 3.3V To additional SequenceLink devices I2C BUS 2.5VIN SMM76.


SMM764 SMM766 BML0603-xxx


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