Features

• Complete SMBus/I²C™ Brushless DC Fan SpeedControl System in a 5-Pin SOT-23 package
• 0.75Ohms PMOS Linear Regulator with 180mAOutput Current Rating
• 0V to 4.922V Output Voltage Range Controlled by a6-Bit DAC
• Simple 2-Wire SMBus/I²C Interface
• 250ms Internal Timer Ensures Fan Start-Up
• Current Limit and Thermal Shutdown
• Fault Status Indication via SMBus Host Readback

Typical Application

Applications

• Notebook Computers
• Spot Cooling
• Portable Instruments
• Battery-Powered Systems
• DC Motor Control
• White LED Power Supplies
• Programmable Low Dropout Regulator

Packaging

Datasheet

• LTC1695 - SMBus/I²C Fan SpeedController in SOT-23

Design Note

• DN238 - SOT-23 SMBus Fan Speed Controller Extends Battery Life and Reduces Noise

Reliability Data

• R421 Reliability Data

LT Journal

• May 2000 SOT-23 SMBus Fan Speed Controller Extends Battery Life and Reduces Noise

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