Thermal Monitor and Fan Speed (RPM) Controller

The ADM1034 is a dual−channel remote− and local−temperature sensor and fan controller. The remote channels monitor the temperature of two remote thermal diodes, which may be discrete 2N3904/6s or may be located on a microprocessor die. The device also monitors its own ambient temperature.

FEATURES
• 1 Local and 2 Remote Temperature Channels
• ±1°C Accuracy on Local and Remote Channels
• Automatic Remote Temperature Channels, Up to 1 kΩ
• Fast (Up to 64 Measurements per Second)
• SMBus 2.0, 1.1, and 1.0 Compliant
• SMBus Address Input/LOCATION Input to UDID
• Programmable Over/Undertemperature Limits
• Programmable Fault Queue
• SMBusALERT Output
• Fail−Safe Overtemperature Comparator Output
• Fan Speed (RPM) Controller
• Look−Up Table for Temperature−to−Fan Speed Control
• Linear and Discrete Options for Look−Up Table
• FAN_FAULT Output
• THERM Input, Used to Time PROCHOT Assertions
• REF Input, Used as Reference for THERM (PROCHOT)
• 3.0 V to 5.5 V Supply
• Small 16−Lead QSOP Package
• This is a Pb−Free Device

APPLICATIONS
• Desktop and Notebook PCs
• Embedded Systems
• Telecommunications Equipment
• LCD Projectors