LM95245 Datasheet | Texas Instruments

FEATURES - 2 Remote and Local Temperature Channels - Targeted for Intel 45nm 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 patible Interface, Supports TIMEOUT - Programmable Conversion Rate for Best Power Consumption - Three-Level Address Pin - Standby Mode One-Shot Conversion Control - Pin-for-Pin patible With the LM95235 and LM86, LM89, LM99 - 8-Pin VSSOP and SOIC Packages APPLICATIONS - Processor/puter System Thermal Management (For Example, Laptops, Desktops, Workstations, Servers) - Electronic Test Equipment - 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 = 50°C to 105°C, ±0.75 °C (max) - TA = 25°C to 85°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 LM95245 is an 11-bit digital temperature sensor with a 2-wire System Management Bus (SMBus) interface and Tru Therm technology that can monitor the temperature of a remote diode as well as its own temperature. The LM95245 can be used to very accurately monitor the temperature of external devices such as microprocessors. Tru Therm technology allows the LM95245 to precisely monitor thermal diodes found in 90 nm and smaller geometry processes. The LM95245 is specifically targeted for Intel processors on 45nm process. LM95245 reports temperature in two different formats for +127.875°C/128°C range and 0°C/255°C range. The LM95245 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...