EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. 2 MAX31875 Low-Power I C Temperature Sensor in WLP Package General Description Benefits and Features The MAX31875 is a 1C-accurate local temperature Tiny, 0.84mm x 0.84mm x 0.35mm WLP 2 sensor with I C/SMBus interface. The combination of tiny Excellent Temperature Accuracy package and excellent temperature measurement accuracy 1.75C from -40C to +145C makes this product ideal for a variety of equipment. 1C from -0C to +70C 2 The I C/SMBus-compatible serial interface accepts standard <10A Average Power Supply Current write byte, read byte, send byte, and receive byte commands Selectable Timeout Prevents Bus Lockup to read the temperature data and configure the behavior (Default Enabled) of the sensor. Bus timeout resets the interface if the clock 2 I C and SMBus Support is low for more than 30ms (nominal). PEC helps to avoid communication errors when used with a master that supports Selectable PEC for Reliable Communications this feature. Up to 1MHz Bus Speed The MAX31875 is available in a 4-bump, wafer-level +1.6V to +3.6V Power Supply Voltage package (WLP) and operates over the -50C to +150C temperature range. Simplified Block Diagram Applications Battery-Powered Equipment VDD Handheld Electronics MAX31875 Data Communications Equipment 2 I C SDA Servers DIGITAL INTERFACE TEMPERATURE AND Industrial Equipment SCL SENSOR CONTROL LOGIC Ordering Information appears at end of data sheet. GND 19-100110 Rev 8 5/212 MAX31875 Low-Power I C Temperature Sensor in WLP Package Absolute Maximum Ratings V to GND ............................................................-0.3V to +4V Operating Temperature Range ......................... -50C to +150C DD SDA, SCL to GND ...................................................-0.3V to +4V Storage Temperature Range ............................ -60C to +150C Continuous Power Dissipation (Multilayer Board, Soldering Temperature (reflow) .......................................+260C T = +70C, derate 9.7mW/C above +70C) .............776mW A Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information ULTRA-THIN WLP PACKAGE CODE Z40C0+1 Outline Number 21-100151 Land Pattern Number See App Note 1891 Thermal Resistance, Four-Layer Board: Junction to Ambient ( ) 103 JA Junction to Case ( ) NA JC For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (T = -40C to +125C, V = 1.6V to 3.6V, resolution = 10 bits, unless otherwise specified. Limits are 100% tested at T = 25C. Limits A DD A over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V = 1.6V -40C T +145C, DD A -1.75 +1.75 C Temperature to 3.6V resolution = 12 bits Measurement Error V = 3.3V -0C to +70C, resolution = 12 bits -1 +1 C DD Selected by Resolution bits D6:D5 in 1.0 C Configuration register. 8-bit (00) Selected by Resolution bits D6:D5 in 0.5 Configuration register. 9-bit (01) Temperature Resolution Selected by Resolution bits D6:D5 in 0.25 C Configuration register. 10-bit (10) Selected by Resolution bits D6:D5 in 0.0625 Configuration register. 12-bit (11) 10-bit (0.25C) resolution, V 3V 35 50 DD Conversion Time 10-bit (0.25C) resolution, 2.5V < V < 3V 35 70 ms DD 10-bit (0.25C) resolution, V 2.5V 35 150 DD 10-bit (0.25C) resolution, V 3V 60 DD First Conversion 10-bit (0.25C) resolution, 2.5V < V < 3V 85 ms DD Completed 10-bit (0.25C) resolution, 1.6V < V 2.5V 180 DD Maxim Integrated 2 www.maximintegrated.com