GENERAL DESCRIPTION

The Philips SA56004X is an SMBus compatible, 11-bit remote/local digital temperature sensor with over temperature alarms. The remote channel of the SA56004 monitors a diode junction, such as a substrate PNP of a microprocessor or a diode connected transistor such as the 2N3904 (NPN) or 2N3906 (PNP). With factory trimming, remote sensor accuracy of ±1°C is achieved.

FEATURES

• Accurately senses temperature of remote microprocessor thermal

diodes or diode connected transistors within ±1 °C

• On-chip local temperature sensing

• 11-bit, 0.125 °C resolution

• 8 different device addresses are available for server applications.

The SA56004ED/EDP with marking code 56004E/600E is

address compatible with the National LM86, the MAX6657/8 and

the ADM1032.

• Offset registers available for adjusting the remote temperature

accuracy

• Programmable under/overtemperature alarms: ALERT and T_CRIT

• SMBus 2.0 compatible interface, supports TIMEOUT

• Operating voltage range: 3.0 V to 3.6 V

• I2C-bus standard and fast mode compatible

• TSSOP8 and SO8 packages

• Programmable conversion rate (0.0625 Hz to 26 Hz)

• Undervoltage lockout prevents erroneous temperature readings

• Latch-up testing is done to JESDEC Standard JESD78 which

exceeds 100 mA

APPLICATIONS

• System thermal management in laptops, desktops, servers and

workstations

• Computers and office electronic equipment

• Electronic test equipment & instrumentation

• HVAC

• Industrial controllers and embedded systems