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SMM150ECR05 データシート(PDF) 1 Page - Summit Microelectronics, Inc. |
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SMM150ECR05 データシート(HTML) 1 Page - Summit Microelectronics, Inc. |
1 / 22 page SMM150 Preliminary Information 1 (See Last Page) © SUMMIT Microelectronics, Inc. 2005 • 1717 Fox Drive • San Jose CA 95131 • Phone 408 436-9890 • FAX 408 436-9897 www.summitmicro.com 2075 2.6 05/13/05 1 FEATURES • Capable of margining supplies with trim inputs using either positive or negative trim pin control • Wide Margin range from 0.3V to VDD using internal reference • 10-bit ADC readout of supply voltage over I2C bus • Margining Controlled Via: I 2C Command Input Pins (MUP, MDN) • Two programmable general purpose sensor inputs (COMP1/2) – UV/OV with FAULT Output • Programmable glitch filter (COMP1/2) • Programmable internal VREF, 0.5V or 1.25V • Operates from 2.7V to 5.5V supply • General Purpose 256-Byte EEPROM with Write Protect • I2C 2-wire serial bus for programming configuration and monitoring status • 28 lead QFN • 20 ball Ultra CSPTM (Chip-Scale) package Applications • In-system test and control of Point-of-Load (POL) Power Supplies for Multi-voltage Processors, DSPs and ASICs • Routers, Servers, Storage Area Networks INTRODUCTION The SMM150 is a highly accurate power supply voltage supervisor and environmental monitor with provisions for voltage margining of the monitored supply. The part includes an internal voltage reference to accurately monitor and margin the supply to within ±1%. The SMM150 has the capability to margin over a wide range from 0.3V to VDD using the internal reference and can read the value of the supply over the I 2C bus using an on-chip 10-bit ADC. The monitor and margin levels are set using the I 2C serial bus. The SMM150 initiates margining via the I 2C bus or by using the M UP or MDN inputs. Once the pre-programmed margin target voltage is reached, the SMM150 holds the converter at this voltage until receiving an I 2C command or de-asserting the margin input pin. When the SMM150 is not margining, the TRIM output pin is held in a high impedance state allowing the converter to operate at its nominal set point. Two general purpose input pins are provided for sensing under or overvoltage conditions. A programmable glitch filter associated with these inputs allows the user to ignore spurious noise signals. A FAULT# pin is asserted once either input set point is exceeded. Using the I 2C interface, a host system can communicate with the SMM150 status register and utilize 256-bytes of nonvolatile memory. SIMPLIFIED APPLICATIONS DRAWING VM TRIM TRIM VOUT+ SEN+ DC-DC Converter VDD WP A0 A1 A2 COMP1 COMP2 SCL SDA FAULT# CAPM MUP MDN I2C Interface Margin Commands V1 2.7V-5.5V SMM150 READY GND VDD_CAP Status Outputs Figure 1 – Applications using the SMM150 Controller to control the Voltage Margining of a DC/DC Converter. Note: This is an applications example only. Some components and values are not shown. Single-Channel Supply Voltage Marginer/Monitor |
同様の部品番号 - SMM150ECR05 |
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同様の説明 - SMM150ECR05 |
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