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UCD9244 Datasheet(PDF) 4 Page - Texas Instruments |
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UCD9244 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 39 page  UCD9244 SLVSAL6A – NOVEMBER 2010 – REVISED FEBRUARY 2011 www.ti.com ELECTRICAL CHARACTERISTICS (Continued) over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN NOM MAX UNIT DIGITAL INPUTS/OUTPUTS Dgnd VOL Low-level output voltage IOL = 6 mA (1), V 33DIO = 3 V V +0.25 V33DIO VOH High-level output voltage IOH = -6 mA (2), V 33DIO = 3 V V –0.6V VIH High-level input voltage V33DIO = 3V 2.1 3.6 V VIL Low-level input voltage V33DIO = 3.5 V 1.4 V SYSTEM PERFORMANCE VRESET Voltage where device comes out of reset V33D Pin 2.3 2.4 V tRESET Pulse width needed for reset nRESET pin 2 µs Vref commanded to be 1V, at 25 °C AFEgain = 4, Setpoint Reference Accuracy –10 10 mV 1V input to EAP/N measured at output of the EADC(3) VRefAcc Setpoint Reference Accuracy over –40°C to 125°C –20 20 mV temperature AFEgain = 4 compared to VDiffOffset Differential offset between gain settings –4 4 mV AFEgain = 1, 2, or 8 240 + 1 tDelay Digital Compensator Delay 240 switching ns cycle FSW Switching Frequency 15.260 2000 kHz Accuracy –5% 5% Duty Max and Min Duty Cycle 0% 100% V33Slew Minimum V33 slew rate V33 slew rate between 2.3V and 2.9V 0.25 V/ms tretention Retention of configuration parameters TJ = 25 °C 100 Years Write_Cycles Number of nonvolatile erase/write cycles TJ = 25 °C 20 K cycles All rails configured to accept VID messages(4) 1 RateVID Max VID message rate All rails configured to accept 6-bit VID messages(4) 4 msg/msec All rails configured to accept 8-bit VID messages(5) 4 (1) The maximum IOL, for all outputs combined, should not exceed 12 mA to hold the maximum voltage drop specified. (2) The maximum IOH, for all outputs combined, should not exceed 48 mA to hold the maximum voltage drop specified. (3) With default device calibration. PMBus calibration can be used to improve the regulation tolerance. (4) VID message rate on each interface. Measured over a 1.0 msec interval (5) VID message rate on PMBus interface. 4 Submit Documentation Feedback © 2010–2011, Texas Instruments Incorporated Product Folder Link(s) :UCD9244 |
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