 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| LM85 System Hardware Monitor with Integrated Fan Control ADVANCE INFORMATION January 2002 LM85 System Hardware Monitor with Integrated Fan Control General Description The LM85 hardware monitor has a two wire digital interface compatible with SMBus 2.0. Using an 8-bit ADC the LM85 measures: - the temperature of two remote diode connected transistors as well as it's own die temperature - VCCP, 2.5V, 3.3VSBY, 5.0V, and 12V supplies using scaling resistors. To set fan speed, the LM85 has three PWM outputs that are each controlled by one or more temperature zone(s). The LM85 includes a digital filter that can be invoked to smooth temperature readings for the control of fan speed. The LM85 has four tachometer inputs to measure fan speed. Limit and status registers for all measured values are included. For a complete datasheet or additional information on this device please send an email to the hardware.monitor.team@nsc.com. Include a detailed description your application, your full name, title, company, address, and telephone number. n n n n n n n n 1.0C digital temperature sensor resolution 3 PWM fan speed control outputs 4 fan tachometer inputs Monitors 5 VID control lines 24-pin QSOP package XOR-tree test mode SMBus 2.0 compliant 2-wire serial digital interface 8-bit ADC Key Specifications j Temperature Sensor Accuracy j Voltage Measurement Accuracy j Resolution j Temperature Range 3C (max) 2% FS (max) 8-bits, 1C 0C to +85C +60C to +100C +3.0V to +3.6V 1.6 mA - LM85 Operational - Remote Temp Accuracy j Power Supply Voltage Features n Monitors VCCP, 2.5V, 3.3VSBY, 5.0V, and 12V motherboard/processor supplies n Monitors 2 remote thermal diodes n Programmable autonomous fan control based on temperature readings n Noise filtering of temperature reading for fan control j Power Supply Current Applications n Desktop PC n Microprocessor based equipment (e.g. Base-stations, Routers, ATMs, Point of Sales) LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. National Semiconductor Corporation Americas Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Francais Tel: +33 (0) 1 41 91 8790 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: ap.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com (c) 2002 National Semiconductor Corporation DS200353 www.national.com |
Price & Availability of LM85
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |