1FEATURES
2• Remote and Local Temperature Channels
• TruTherm BJT Beta Compensation Technology
• LM95235Q is AEC-Q100 Grade 3 Compliant
and is Manufactured on an Automotive Grade
Flow
• Diode Model Selection Bit - MMBT3904 or
65/90-nm Processor Diodes
• Two Formats: -128°C to 127.875°C and 0°C to
255.875°C
• Digital Filter for Remote Channel
• Programmable TCRIT and OS Thresholds
• Programmable Shared Hysteresis Register
• Diode Fault Detection
• Mask, Offset, and Status Registers
• SMBus 2.0 Compatible Interface, Supports
TIMEOUT
• Programmable Conversion Rate for Best
Power Consumption
• Three-Level Address Pin
• Standby Mode One-Shot Conversion Control
• Pin-for-Pin Compatible With the LM86 and
LM89
• 8-Pin VSSOP Package

APPLICATIONS
• Processor/Computer System Thermal
Management (For Example, Laptops,
Desktops, Workstations, Servers)
• Electronic Test Equipment and Office
Electronics

KEY SPECIFICATIONS
• Supply Voltage 3.0 to 3.6 V
• Supply Current, Conv. Rate = 1 Hz 350 μA (typ)
• Remote Diode Temperature Accuracy
– TA = 25°C to 85°C; TD = 60°C to 100°C, ±0.75
°C (max)
– TA = 25°C to 90°C; TD = 40°C to 125°C, ±1.5
°C (max)
• Local Temperature Accuracy
– TA = 25°C to 100°C, ±2.0 °C (max)
• Conversion Rate, Both Channels 16 to 0.4 Hz

DESCRIPTION
The LM95235 is an 11-bit digital temperature sensor
with a 2-wire System Management Bus (SMBus)
interface and TruTherm technology that can monitor
the temperature of a remote diode as well as its own
temperature. The LM95235 can be used to very
accurately monitor the temperature of external
devices such as microprocessors, graphics
processors, or a diode-connected MMBT3904 transistor. For automotive applications the LM95235Q
is available that is AEC-Q100 Grade3 compliant and
is manufactured on an Automotive Grade Flow.
TruTherm BJT (transistor) beta compensation
technology allows the LM95235 to precisely monitor thermal diodes found in 90 nm and smaller geometry
processes. LM95235 reports temperature in two
different formats for +127.875°C/-128°C range and
0°C/255°C range. The LM95235 T_CRIT and OS
outputs are asserted when either unmasked channel
exceeds its programmed limit and can be used to
shutdown the system, to turn on the system fans, or
as a microcontroller interrupt function. The current
status of the T_CRIT and OS pins can be read back
from the status registers via the SMBus interface. All
limits have a shared programmable hysteresis
register.
The remote temperature channel of the LM95235 has
a programmable digital filter. The LM95235 contains
a diode model selection bit to select between a
typical Intel® processor on a 65 nm or 90 nm process
or MMBT3904, as well as an offset register for
maximum flexibility and best accuracy.