1FEATURES
2• Accurately Senses Remote Diode-Connected
MMBT3904 Transistors or Thermal Diodes On-
Board Processors, FPGAs or ASICs
• Accurately Senses Its Own Local Die
Temperature
• Offset Register can Adjust for a Variety of
Thermal Diodes
• Resolves Remote Temperatures up to
255.875°C
• 10-bit Plus Sign and 11-bit Unsigned Data
Formats, with 1/8°C Resolution
• Digital Filter of Remote Data Lowers Noise and
Improves Resolution to 1/32°C
• Integrated PWM Fan Speed Control Output
Supports High Resolution at 22.5kHz
Frequency for 4-Pin Fans
• Acoustic Fan Noise Reduction with User-
Programmable 12-Step Lookup Table
• LUT Transition Fine Resolution Smoothing
Function
• Tachometer Input for Measuring Fan RPM with
Smart-Tach Modes for Measuring RPM of Fans
when Pulse-Width-Modulating an Actual Power
• ALERT Output for Error Event Notification
• TCRIT Output for Critical Temperature System
Shutdown
• SMBus 2.0 Compatible Interface, Supports
TIMEOUT
• WSON Packages

APPLICATIONS
• Communications Infrastructure FPGA, ASIC or
Processor Thermal Management
• Electronic Test and Office Equipment
• Industrial Controls

DESCRIPTION
The LM96063 is remote diode temperature sensors
with integrated fan control that includes remote diode
sensing. The LM96063 accurately measures: (1) its
own temperature and (2) the temperature of a diode-
connected transistor, such as a 2N3904, or a thermal
diode commonly found on Computer Processors,
Graphics Processor Units (GPU) and other ASIC's.
The LM96063 also features an integrated, pulse-
width-modulated (PWM), open-drain fan control
output. Fan speed is a combination of the remote
temperature reading, the lookup table and register
settings. The 12-step Lookup Table (LUT) enables
the user to program a non-linear fan speed vs.
temperature transfer function often used to quiet
acoustic fan noise. In addition a fully programmable
ramping function has been added to allow smooth
transitions between LUT setpoints.
The LM96063 is targeted mainly for a transistor
MMBT3904 used as thermal diodes or thermal diodes
found in many FPGAs, ASICs, and processors on
SOI processes. The LM96163 is identical to the
LM96063 except the TruTherm BJT Beta compensation is enabled at power up that is targeted
for thermal diodes found on popular processors using
bulk non SOI processes.