SX8743 Datasheet | SEMTECH

Description The SX8733, SX8743 and SX8744 are digital temperature sensors with a 2-wire SMBus interface. It provides a lowcost solution to monitor the temperature of remote diodes as well as its own temperature with an on-chip PN junction sensor. Depending on the device version, 2, 3 or 4 programmable ports are included. They offer the possibility to trig under- / over- temperature alarms which can be used as an interrupt or to connect up to 3 external sensors in single-ended mode or 2 external sensors in differential mode. The parasitic resistances in series with the temperature monitoring diode can be cancelled by an algorithmic, a 3point or a Kelvin (4-wire) method. The SX8744 is pin-to-pin patible with the LM86 part. The SX8733 (2 programmable ports) is available in MLPD6 package. The SX8743 (4 programmable ports) and SX8744 (3 programmable ports) are available in MSOP-8 package. + ADC - 3 4 D2+ D2- + ADC - SMBUS SMBUS Key Product Features 1 Internal and Up To 3 External Sensors Remote Diode Temp. Accuracy of ±0.5°C on the Temp. Range 25°C to 100°C 2 Temp. Output Formats: 0°C to 127°C and -40°C to 140°C With 0.125°C Resolution Parasitic Series Resistance Cancellation: Algorithmic, 3point and Kelvin (4-wire) Under-/ Over- Temp. Alarms With Programmable Thresholds Programmable Conversion Rate For Optimal Power Consumption 250 u A Active Current @ 10Hz Sampling Rate SMBus v2.0 Interface Supports TIMEOUT Pb-Free, Halogen Free, Ro HS/WEEE pliant Product Applications Printer Server Set Top Box Projector Batteries charger monitoring ACS Revision 2.91/February 2010 ©2010 Semtech Corp. Ordering Information Part Number Feature 2 Programmable ports 4 Programmable ports 3 Programmable ports Package MLPD-6 MSOP-8 MSOP-8 SX8733EWLTRT SX8743EMSTRT SX8744EMSTRT Page 1 .semtech. SX8733/SX8743/SX8744 ADVANCED MUNICATIONS & SENSING Table of contents Section Page 1. Electrical Characteristics ..............................................................