ADM6315-31D2ARTZRL Analog Devices

Open-Drain Microprocessor Supervisory Circuit in 4-Lead SOT-143 Data Sheet ADM6315 FEATURES FUNCTIONAL BLOCK DIAGRAM Specified over temperature GND V CC Low power consumption (5 A typical) V REF Precision voltage monitor of voltages from 2.5 V to 5 V ADM6315 at 100 mV increments Reset assertion down to V > 1 V CC Reset timeout periods: 1 ms, 20 ms, 140 ms, or 1120 ms (minimum) RESET RESET DEBOUNCE MR Built-in manual reset CIRCUITRY Pin compatible with the ADM811 Available in SOT-143 package Figure 1. Qualified for automotive applications APPLICATIONS V CC SYSTEM POWER Microprocessor systems Controllers 10k MICROPROCESSOR ADM6315 SYSTEM Intelligent instruments MR RESET RESET Automotive systems Safety systems GND GND Portable instruments Figure 2. Typical Operating Circuit GENERAL DESCRIPTION The ADM6315 is a reliable voltage-monitoring device that is The manual reset function is very useful, especially if the circuit suitable for use in most voltage-monitoring applications. in which the ADM6315 is operating enters into a state that can be detected only by the user. Allowing the user to reset a system The ADM6315 is designed to monitor as little as a 1.8% manually can reduce the damage or danger that could otherwise degradation of a power supply voltage. The ADM6315 can be caused by an out-of-control or locked-up system. monitor all voltages (at 100 mV increments) from 2.5 V to 5 V. The ADM6315 is available in a cost- and space-efficient Included in this circuit is a debounced manual reset input. SOT-143 package. RESET can be activated using an ordinary switch (pulling MR low), a low input from another digital device, or a degradation of the supply voltage. Rev. G Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 19992013 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com 00081-001 00081-011ADM6315 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................6 Applications ....................................................................................... 1 Theory of Operation .........................................................................7 Functional Block Diagram .............................................................. 1 Interfacing to Output of Other Devices .....................................7 General Description ......................................................................... 1 RESET Benefits of a Very Accurate Threshold .............................7 Revision History ............................................................................... 2 Detailed Description .....................................................................7 Specifications ..................................................................................... 3 Manual Reset Input .......................................................................7 Absolute Maximum Ratings ............................................................ 4 Transient Immunity ......................................................................7 Thermal Resistance ...................................................................... 4 Outline Dimensions ..........................................................................8 ESD Caution .................................................................................. 4 Ordering Guide .............................................................................8 Pin Configuration and Function Descriptions ............................. 5 Automotive Products ....................................................................9 REVISION HISTORY 2/03Rev. A to Rev. B 9/13Rev. F to Rev. G Edits to Features.................................................................................1 Changed Date in Revision F Revision History ............................. 2 Edits to Specifications ....................................................................... 2 Updated Outline Dimensions ......................................................... 8 Edits to Absolute Maximum Ratings .............................................. 3 12/11Rev. E to Rev. F Edits to Ordering Guide ................................................................... 3 Edits to Table I and Table II ............................................................. 6 Added Automotive Part ..................................................... Universal Edits to Table III and Table IV ......................................................... 7 Changes to Ordering Guide ............................................................ 8 Updated Outline Dimensions .......................................................... 8 9/07Rev. D to Rev. E 10/01Rev. 0 to Rev. A Changes to Absolute Maximum Ratings ....................................... 4 Edits to Table III ................................................................................ 7 Updated Outline Dimensions ......................................................... 8 Edits to Table IV ................................................................................ 7 Changes to Ordering Guide ............................................................ 8 1999Revision 0: Initial Version 4/06Rev. C to Rev. D Updated Format .................................................................. Universal Updated Outline Dimensions ......................................................... 8 Changes to Ordering Guide ............................................................ 8 12/03Rev. B to Rev. C Edit to Absolute Maximum Ratings ............................................... 3 Edits to Ordering Guide .................................................................. 4 Deleted Table I and Table II ............................................................ 6 Deleted Table III and Table IV ........................................................ 7 Updated Outline Dimensions ......................................................... 8 Rev. G Page 2 of 12