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SMS47GR00 Datasheet(PDF) 1 Page - Summit Microelectronics, Inc. |
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SMS47GR00 Datasheet(HTML) 1 Page - Summit Microelectronics, Inc. |
1 / 19 page 1 Characteristics subject to change without notice 2087 1.1 04/11/05 SMS47 SUMMIT MICROELECTRONICS, Inc. ©SUMMIT MICROELECTRONICS, Inc., 2005 • 1717 Fox Dr. • San Jose, CA 95131 • Phone 408-436-9890 • FAX 408-436-9897 • www.summitmicro.com PRELIMINARY INFORMATION 1 (SEE LAST PAGE) Operational from any of four Voltage Monitoring Inputs Programmable Power-up Cascade Sequencing Programmability allows monitoring any voltage between 0.6V and 5.6V with no external components Programmable 5mV steps in the low range Programmable Watchdog Timer Programmable Reset Pulse Width Programmable Nonvolatile Combinatorial Logic for generation of Reset Fault Status Register APPLICATIONS Desktop/Notebook/TabletComputers Multi-voltage Systems Telecom/Network Servers Portable Battery-powered Equipment Set-top Boxes Data-storage Equipment Quad Programmable Precision Cascade Sequencer and Supervisory Controller FEATURES INTRODUCTION The SMS47 is a nonvolatile user-programmable voltage supply cascade sequencer and supervisory circuit de- signed specifically for advanced systems that need to monitor multiple voltages. The SMS47 can monitor four separate voltages without the need of any external voltage divider circuitry unlike other devices that need factory- trimmed threshold voltages and external components to accommodate different supply voltages and tolerances. The SMS47 can also be used to enable DC/DC converters or LDOs to provide a closed loop cascading of the supplies duringpower-up. The SMS47 watchdog timer has a user programmable time-out period and it can be placed in an idle mode for system initialization or system debug. All of the functions are user accessible through an industry standard I2C 2-wire serial interface. Programming of configuration, control and calibration values by the user is simplified with the SMX3200 program- ming adapter and Windows GUI software obtainable from Summit Microelectronics. SIMPLIFIED APPLICATION DRAWING Applications Schematic using the SMS47 Controller to provide closed loop power-up cascade sequenc- ing and supervisory functions. NOTE: THIS IS AN APPLICATIONS EXAMPLE ONLY. SOME PINS, COMPONENTS AND VALUES ARE NOT SHOWN. 2047 SAD 2.0 V0 V1 V2 V3 RESET# PUP#1 VDD_CAP PUP#2 PUP#3 I2C 5V 3.3V 2.5V 1.8V DC/DC DC/DC LDO SMS47 A2 A1 SDA SCL 7 6 9 10 1 16 2 3 14 MR# Reset# 15 WLDI GND 8 11 12 4 13 5 0.1µF |
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Descripción similar - SMS47GR00 |
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