MAX6693 19-4096 Rev 0 5/08 7-Channel Precision Temperature Monitor with Beta Compensation General Description Features The MAX6693 precision multichannel temperature sen- Six Thermal-Diode Inputs sor monitors its own temperature and the temperatures Beta Compensation (Channel 1) of up to six external diode-connected transistors. All Local Temperature Sensor temperature channels have programmable alert thresh- olds. Channels 1, 4, 5, and 6 also have programmable 1.5C Remote Temperature Accuracy (+60C to overtemperature thresholds. When the measured tem- +100C) perature of a channel exceeds the respective thresh- Temperature Monitoring Begins at POR for Fail- old, a status bit is set in one of the status registers. Two Safe System Protection open-drain outputs, OVERT and ALERT, assert corre- sponding to these bits in the status register. ALERT and OVERT Outputs for Interrupts, The 2-wire serial interface supports the standard system Throttling, and Shutdown management bus (SMBus) protocols: write byte, read STBY Input for Hardware Standby Mode byte, send byte, and receive byte for reading the tem- Small, 20-Pin TSSOP Package perature data and programming the alarm thresholds. 2-Wire SMBus Interface The MAX6693 is specified for an operating temperature range of -40C to +125C and is available in a 20-pin Ordering Information TSSOP package. PART TEMP RANGE PIN-PACKAGE Applications MAX6693UP9A+ -40C to +125C 20 TSSOP Desktop Computers +Denotes a lead-free package. Notebook Computers Note: Slave address is 1001 101. Workstations Servers SMBus is a trademark of Intel Corp. Pin Configuration appears at end of data sheet. Typical Application Circuit +3.3V CPU 4.7k 1 20 DXP1 GND EACH 100pF 2 MAX6693 19 CLK DXN1 SMBCLK 3 18 DATA DXP2 SMBDATA 100pF INTERRUPT 4 17 DXN2 ALERT TO P 5 16 DXP3 V CC 0.1F 100pF 6 15 DXN3 OVERT TO SYSTEM 7 14 DXP4 SHUTDOWN N.C. 100pF 8 13 DXN4 STBY GPU 9 12 DXP5 DXP6 100pF 100pF 10 11 DXN5 DXN6 Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.7-Channel Precision Temperature Monitor with Beta Compensation ABSOLUTE MAXIMUM RATINGS V , SMBCLK, SMBDATA, ALERT, OVERT, Junction-to-Case Thermal Resistance ( ) (Note 1) CC JC 20-Pin TSSOP...............................................................20C/W STBY to GND ....................................................-0.3V to +6.0V DXP to GND..............................................-0.3V to (V + 0.3V) Junction-to-Ambient Thermal Resistance ( ) (Note 1) JA CC 20-Pin TSSOP............................................................73.8C/W DXN to GND ........................................................-0.3V to +0.8V ESD Protection (all pins, Human Body Model) ....................2kV SMBDATA, ALERT, OVERT Current....................-1mA to +50mA DXN Current......................................................................1mA Operating Temperature Range .........................-40C to +125C Junction Temperature......................................................+150C Continuous Power Dissipation (T = +70C) A 20-Pin TSSOP Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C (derate 13.6mW/C above +70C) .............................1084mW Note 1: 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.maxim-ic.com/thermal-tutorial. 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. ELECTRICAL CHARACTERISTICS (V = +3.0V to +3.6V, V = V , T = -40C to +125C, unless otherwise noted. Typical values are at V = +3.3V and T = CC STBY CC A CC A +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V 3.0 3.6 V CC Software Standby Supply Current I SMBus static 3 10 A SS Operating Current I During conversion (Note 3) 500 2000 A CC Channel 1 only 11 Temperature Resolution Bits Other diode channels 8 T = T = +60C to +100C -1.5 +1.5 3 Temperature Accuracy V = 3.3V, A RJ CC C (Remote Channel 1) = 0.5 T = T = 0C to +125C -2.375 +2.375 A RJ T = T = +60C to +100C -2 +2 3 Temperature Accuracy A RJ V = 3.3V C CC (Remote Channels 26) T = T = 0C to +125C -2.5 +2.5 A RJ T = +60C to +100C -2 +2 A 3 Temperature Accuracy V = 3.3V C CC (Local) T = 0C to +125C -2.5 +2.5 A T = T = +60C to +100C -3 +3 6 Temperature Accuracy V = 3.3V, A RJ CC C (Remote Channel 1) = 0.5 T = T = 0C to +125C -4 +4 A RJ T = T = +60C to +100C -3 +3 6 Temperature Accuracy A RJ V = 3.3V C CC (Remote Channels 26) T = T = 0C to +125C -3.5 +3.5 A RJ T = +60C to +100C -2.5 +2.5 6 Temperature Accuracy A V = 3.3V C CC (Local) T = 0C to +125C -3 +3 A Supply Sensitivity of Temperature o 0.2 C/V Accuracy Remote Channel 1 Conversion t 190 250 312 ms CONV1 Time Remote Channels 26 t 95 125 156 ms CONV Conversion Time 2 MAX6693