Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

LM85 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM85
Description  Hardware Monitor with Integrated Fan Control
PDF  26 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM85 Datasheet(HTML) 1 Page - National Semiconductor (TI)

  LM85 Datasheet HTML 1Page - National Semiconductor (TI) LM85 Datasheet HTML 2Page - National Semiconductor (TI) LM85 Datasheet HTML 3Page - National Semiconductor (TI) LM85 Datasheet HTML 4Page - National Semiconductor (TI) LM85 Datasheet HTML 5Page - National Semiconductor (TI) LM85 Datasheet HTML 6Page - National Semiconductor (TI) LM85 Datasheet HTML 7Page - National Semiconductor (TI) LM85 Datasheet HTML 8Page - National Semiconductor (TI) LM85 Datasheet HTML 9Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 26 page
background image
LM85
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
Σ∆ ADC, the
LM85 measures:
– the temperature of two remote diode connected transis-
tors as well as its own die
– the V
CCP, 2.5V, 3.3VSBY, 5.0V, and 12V supplies (inter-
nal scaling resistors).
To set fan speed, the LM85 has three PWM outputs that are
each controlled by one of three temperature zones. The
LM85 includes a digital filter that can be invoked to smooth
temperature readings for better control of fan speed. The
LM85 has four tachometer inputs to measure fan speed.
Limit and status registers for all measured values are in-
cluded.
Features
n
2-wire, SMBus 2.0 compliant, serial digital interface
n
8-bit
Σ∆ ADC
n
Monitors V
CCP, 2.5V, 3.3 VSBY, 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
n
1.0˚C digital temperature sensor resolution
n
3 PWM fan speed control outputs
n
4 fan tachometer inputs
n
Monitors 5 VID control lines
n
24-pin QSOP package
n
XOR-tree test mode
Key Specifications
n
Voltage Measurement Accuracy
±2% FS (max)
n
Resolution
8-bits, 1˚C
n
Temperature Sensor Accuracy
±3˚C (max)
n
Temperature Range
— LM85 Operational
0˚C to +85˚C
— Remote Temp Accuracy
0˚C to +125˚C
n
Power Supply Voltage
+3.0V to +3.6V
n
Power Supply Current
0.53 mA
Applications
n
Desktop PC
n
Microprocessor based equipment
(e.g. Base-stations, Routers, ATMs, Point of Sales)
Block Diagram
20035301
March 2003
© 2003 National Semiconductor Corporation
DS200353
www.national.com


Similar Part No. - LM85

ManufacturerPart #DatasheetDescription
logo
National Semiconductor ...		 LM8500 NSC-LM8500 Datasheet
319Kb / 20P		 Four Wire Resistive Touchscreen Controller with Brownout
LM8500 NSC-LM8500 Datasheet
327Kb / 20P		 Four Wire Resistive Touchscreen Controller with Brownout
LM8500HLQ9 NSC-LM8500HLQ9 Datasheet
327Kb / 20P		 Four Wire Resistive Touchscreen Controller with Brownout
LM8500HMT9 NSC-LM8500HMT9 Datasheet
327Kb / 20P		 Four Wire Resistive Touchscreen Controller with Brownout
LM8500HVA9 NSC-LM8500HVA9 Datasheet
327Kb / 20P		 Four Wire Resistive Touchscreen Controller with Brownout
More results

Similar Description - LM85

ManufacturerPart #DatasheetDescription
logo
National Semiconductor ...		 LM93 NSC-LM93 Datasheet
654Kb / 92P		 Hardware Monitor with Integrated Fan Control for Server Management
LM96000 NSC-LM96000 Datasheet
695Kb / 28P		 Hardware Monitor with Integrated Fan Control
LM94 NSC-LM94 Datasheet
697Kb / 24P		 TruTherTM Hardware Monitor with PI Loop Fan Control for Server Management
logo
List of Unclassifed Man...		 ASC7611 ETC2-ASC7611 Datasheet
508Kb / 40P		 HARDWARE MONITOR WITH INTEGRATED FAN CONTROL
ASC7621 ETC2-ASC7621 Datasheet
574Kb / 50P		 HARDWARE MONITOR WITH INTEGRATED FAN CONTROL
logo
National Semiconductor ...		 LM96194 NSC-LM96194 Datasheet
529Kb / 24P		 TruTherm??Hardware Monitor with PI Fan Control for Workstation Management
logo
Feature Integration Tec...		 F71858 FINTEK-F71858_09 Datasheet
1Mb / 65P		 Hardware KBC with ACPI, Temp. and Fan Control
logo
Texas Instruments		 LM93 TI1-LM93 Datasheet
1Mb / 95P		 Hardware Monitor with Integrated Fan Control for Server Management
LM94 TI1-LM94_15 Datasheet
1Mb / 112P		 Hardware Monitor with PI Loop Fan Control for Server Management
LM96000 TI1-LM96000 Datasheet
1Mb / 40P		 Hardware Monitor with Integrated Fan Control
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com