EVALUATION KIT AVAILABLE MAX34446 PMBus Power-Supply Data Logger General Description Features The MAX34446 data logger for power supplies can S Voltage, Current, and Temperature Measurement monitor voltages for overvoltage and undervoltage, as and Threshold Excursion Detection well as for overcurrent conditions and overtemperature S Supports Up to Four Voltage or Current conditions. The device constantly checks for user- Measurements programmable thresholds when these thresholds are S Supports Up to Three Temperature Sensors: Two exceeded, the device logs the recent real-time operating Remote Diodes Plus an Internal Sensor conditions in nonvolatile flash memory. The device can monitor up to four voltages or currents, and can monitor S Calculates Power Consumption three temperature sensors. See the Typical Application S Differential 12-Bit ADC Circuit/Block Diagram for more details. S PMBus-Compliant Control Interface S Power-Good Outputs Applications S Individual Fault Outputs Base Stations S On-Board Nonvolatile Fault Logging and Default Industrial Controls Configuration Setting Network Switches/Routers 2 S I C/SMBus-Compatible Serial Bus with Bus Servers Timeout Function Smart Grid Network Systems S No External Clocking Required S 2.7V to 5.5V Supply Voltage S Low Power Consumption S -40NC to +105NC Temperature Range Ordering Information appears at end of data sheet. S 40-Pin TQFN (6mm x 6mm) Package Typical Application Circuit/Block Diagram appears at end of data sheet. PMBus is a trademark of SMIF, Inc. For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/MAX34446.related For pricing, delivery, and ordering information, please contact Maxim Direct at 19-5879 Rev 3 10/13 1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com.MAX34446 PMBus Power-Supply Data Logger ABSOLUTE MAXIMUM RATINGS V to V ...........................................................-0.3V to +5.5V REG18 to V .......................................................-0.3V to +2.0V DD SS SS SDA or SCL to V ...............................................-0.3V to +5.5V REG25 to V -0.3V to +0.3V SS SS .............................................................. RS- 5:0 to V .....................................................-0.3V to +0.3V Continuous Power Dissipation (T = +70NC) SS A TQFN (derate 35.7mW/NC above +70C) ................2857.1mW RS+ 5:0 to V ..... -0.3V to (V + 0.3V), not to exceed +5.5V SS DD RS+ 5:0 to V with 100 of series resistance ..-0.3V to +2.0V Operating Temperature Range ........................ -40NC to +105NC SS Storage Temperature Range ............................ -55NC to +125NC All other pins relative to V .... -0.3V to (V + 0.3V), not to exceed +5.5V Lead Temperature (soldering, 10s) ................................+300NC SS DD Soldering Temperature (reflow) ......................................+260NC All other pins relative to V with greater than SS 750 of series resistance .................................. -0.3V to 5.5V Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional opera- tion 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. RECOMMENDED OPERATING CONDITIONS (T = -40NC to +105NC, unless otherwise noted.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V Operating Voltage V (Note 1) 2.7 5.5 V DD DD 0.7 x V + DD Input Logic-High V V IH V 0.3 DD 0.3 x Input Logic-Low V 0 V IL V DD V + DD Input Logic-High: SCL, SDA V 2.7V P V P 3.6V (Note 1) 2.1 V I2C IH DD 0.3 Input Logic-Low: SCL, SDA V 2.7V P V P 3.6V (Note 1) 0 +0.8 V I2C IL DD V Rise Time From 0V to 2.7V 4 ms DD V Trace Impedance 5 W DD DC ELECTRICAL CHARACTERISTICS (V = 2.7V to 5.5V, T = -40NC to +105NC, unless otherwise noted. Typical values are at V = 3.3V, T = +25NC.) DD A DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS I (Note 2) 3.0 CPU Supply Current mA I 8 PROGRAM Brownout Voltage V Monitors V (Note 1) 2.40 2.46 2.55 V BO DD Brownout Hysteresis V Monitors V (Note 1) 30 mV BOH DD Internal System Clock f 4.0 MHz MOSC +25NC P T P +85NC -3 +2 A System Clock Error (Note 3) f -40NC P T P +25NC -6.5 +1.6 % ERR:MOSC A -20NC P T P +105NC -4 +2.5 A Output Logic-Low V I = 4mA (Note 1) 0.4 V OL1 OL V - DD Output Logic-High V I = -2mA (Note 1) V OH1 OH 0.5 Pullup Current I V = V , V = 3.3V 38 55 107 FA PU PIN SS DD Maxim Integrated 2