MAX34446 MAXIM [Maxim Integrated Products], MAX34446 Datasheet
MAX34446
Related parts for MAX34446
MAX34446 Summary of contents
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... General Description The MAX34446 data logger for power supplies can monitor voltages for overvoltage and undervoltage, as well as for overcurrent conditions and overtemperature conditions. The device constantly checks for user- programmable thresholds; when these thresholds are exceeded, the device logs the recent real-time operating conditions in nonvolatile flash memory ...
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... BOH DD f MOSC +25NC +85NC A f -40NC +25NC ERR:MOSC A -20NC +105NC 4mA (Note 1) OL1 -2mA (Note 1) OH1 3.3V PU PIN SS DD MAX34446 MIN TYP MAX UNITS 2.7 5 0.3 DD 0 2.1 V 0.3 -0.3 +0 3.3V +25NC ...
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... DIODE T = 0NC to +60NC -45NC to +120NC DIODE T = -40NC to +105NC -45NC to +120NC DIODE +50NC FLASH +50NC A Per temperature sensor Measurement from POR until monitoring begins MAX34446 = 3.3V +25NC MIN TYP MAX UNITS 1.22 1.225 1.23 V -0.6 +0.6 % 300 FV 12 Bits 15 MI LSB Q4 LSB ...
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... Transmit t SU:DAT t SU:STA SU:STO Currents entering the device are specified as positive, and currents exiting HIGH t t HD:DAT SU:DAT REPEATED START . IH(MIN) MAX34446 = 3.3V +25NC MIN TYP 10 4.7 4.0 4.7 4.0 0 300 100 4.7 4 C/SMBus Timing HD:STA t SU:STA MAX ...
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... Integrated Products PMBus Power-Supply Data Logger Typical Operating Characteristics 100 120 MAX34446 toc03 LOG 2ms/div MAX34446 = 3.3V +25NC SUPPLY CURRENT vs. SUPPLY VOLTAGE 4.0 3 ...
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... A0 33 LOG 34 35 ENABLE MAX34446 N. RS TQFN (6mm × 6mm × 0.75mm) FUNCTION to V with a 0.1FF capacitor MAX34446 Pin Configuration 21 20 PG3 19 FAULT4 18 N.C. 17 FAULT5 16 SYNC 15 FAULT6 14 N.C. 13 RST 12 RS Pin Description ...
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... Integrated Products PMBus Power-Supply Data Logger FUNCTION to enable the device. This pin has a 100Fs deglitch filter. When low, DD MAX34446 Pin Description (continued) with 1FF and 10nF capacitors with 1FF and 10nF capacitors. Do not connect SS ...
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... R Read Byte Read Word Block R/W R/W R/W R/W Block R/W R/W R/W R/W Block R/W R/W R/W R/W R/W Word R/W R/W R/W R/W Word R/W — — R/W Word R/W — — R/W Word — R/W — MAX34446 FLASH NO.OF LOCKED STORED BYTES (NOTE2) (NOTE FIXED 1 N FIXED ...
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... Note5: The factory-set default value for the complete block of the MFR_NV_FAULT_LOG is FFh. Note6: The factory-set default value for the complete block is 00h. Detailed Description The MAX34446 data logger for power supplies can monitor voltages for overvoltage and undervoltage, as well as for overcurrent conditions and overtemperature conditions. The device constantly checks for user- programmable thresholds ...
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... ADDRESS DATA BYTE DATA BYTE A A CODE LOW DATA BYTE A CODE CODE MAX34446 Address Select Table 2. SMBus/PMBus Operation SMBus/PMBus Communication Examples DATA BYTE DATA BYTE LOW HIGH DATA BYTE ...
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... If for any reason fewer than the expected number of bytes is written to or read from the device, the device completely ignores the command and takes no action. For each supported command, the device expects a fixed number of bytes to be written to the device. If for MAX34446 Group Command Write Format 8 1 DATA BYTE ...
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... The device supports the group command. The group command is used to send commands to more than one PMBus device not required that all the devices MAX34446 SMBus Timeout ), the device terminates the sequence and PMBus Operation ...
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... All data values are represented in DIRECT format, unless otherwise stated. Whenever the PMBus specification refers to the PMBus device referring to the MAX34446. While the com- mand can call for turning on or turning off the PMBus device, the MAX34446 always remains on to continue communicating with the PMBus master ...
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... DIRECT Format Values The host system uses the following equation to convert the value received from the PMBus device—in this case, the MAX34446—into a reading of volts, degrees Celsius, or other units as appropriate (1/ where X is the calculated, real world value in the appro- priate units (V, NC, etc.) ...
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... TEMPERATURE bit in STATUS_BYTE and STATUS_WORD. No bits are set in STATUS_MFR_SPECIFIC. The remote diode temperature sensor can support either npn or pnp transistors. The device automatically cancels the series resistance that can affect remote diodes that are located far from the device. MAX34446 ...
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... MAX34446 YES SET PGn PIN HIGH AFTER MFR_PG_DELAY NO describes the steps that the MAX34446 takes explains how the MAX34446 responds after Figure 2 shows a voltage channel and over- ...
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... NOTE 2: MFR_FAULT_RESPONSE = 82h. THE MAX34446 ONLY RESPONDS TO FAULTS. A. THE CHANNEL IS ENABLED (POR, ENABLE, OR THROUGH PMBus). FAULTn ASSERTED, NO STATUS BITS SET LOG CHANGE. C. FAULTn IS RELEASED. THE MAX34446 IS NOW ALLOWED TO RESPOND TO VOUT_OV_FAULT_LIMIT EXCURSIONS. D. FAULTn IS ASSERTED. VOUT_OV_FAULT STATUS IS SET, BUT NOT VOUT_OV_WARN LOG IS WRITTEN CHANGE. ...
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... Integrated Products PMBus Power-Supply Data Logger 2 C) address. Send the PAGE command with data Table 1 ASSOCIATEDCONTROL MAX34446 PMBus Commands PAGE (00h) should apply to all pages at the same time. ...
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... Integrated Products PMBus Power-Supply Data Logger MEANING 0 = PEC not supported Maximum supported bus speed is 100kHz Device does not support ALERT output. Always returns 0000. MAX34446 CLEAR_FAULTS (03h) WRITE_PROTECT (10h) STORE_DEFAULT_ALL (11h) RESTORE_DEFAULT_ALL (12h) CAPABILITY (19h) MEANING ...
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... Integrated Products PMBus Power-Supply Data Logger RESISTIVEVOLTAGE- DIVIDERRATIO 1.0 1.0 1.0 1.0 1.0 1.0 1.0 MAX34446 VOUT_MODE (20h) Table 3 for the m, b, and R values for the VOUT_SCALE_MONITOR (2Ah) VOUT�SCALE�MONITOR VALUE(HEX) 0.833 6AAAh 0.667 5555h ...
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... Integrated Products PMBus Power-Supply Data Logger MAX34446 VOUT_OV_WARN_LIMIT (42h) ...
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... Integrated Products PMBus Power-Supply Data Logger 8. DEVICERESPONSE(ONTHEASSOCIATEDPAGE) Negative values are invalid. Current measurement disabled (voltage measurement enabled). Current measurement enabled (voltage measurement disabled). DEVICERESPONSE(ONTHEASSOCIATEDPAGE) Negative values are invalid. Temperature measurement disabled. Temperature measurement enabled. MAX34446 IOUT_OC_FAULT_LIMIT (4Ah) OT_FAULT_LIMIT (4Fh) ...
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... Integrated Products PMBus Power-Supply Data Logger (Figure 3). The POWER_GOOD_OFF level is normally set lower MFR_PG_DELAY 100kHz MAX34446 OT_WARN_LIMIT (51h) POWER_GOOD_ON (5Eh) (Figure POWER_GOOD_OFF (5Fh) POWER_GOOD_OFF 200kHz 3) ...
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... These bits always return overvoltage fault has occurred. An overcurrent fault has occurred. This bit always returns temperature fault or warning has occurred. A communication, memory, or logic fault has occurred. MAX34446 STATUS_BYTE (78h) Table 10 MEANING STATUS_WORD (79h) describes the STATUS_WORD message content. ...
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... A watchdog reset has occurred. This bit always returns a 0. Individual power good has been negated. Only applies to the selected page. This is a status- only bit and is not latched. IOUT overcurrent fault. IOUT overcurrent warning. MAX34446 STATUS_VOUT (7Ah) Table 12. MEANING STATUS_CML (7Eh) Table 13 ...
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... The MFR_ID command returns the text (ISO/IEC 8859-1) character of the manufacturer’s (Maxim) identification. The default MFR_ID value is 4Dh (M). This command is read-only. The MFR_MODEL command returns the text (ISO/IEC 8859-1) character of the MAX34446 model number. The default MFR_MODEL value is 54h (T). This command is read-only. ...
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... Whether voltage or current is monitored on the channel is SS selected with the IOUT_OC_FAULT_LIMIT command. CHANNEL1 CHANNEL0 MAX34446 MFR_SERIAL (9Eh) MFR_MODE (D1h) MEANING NVLOGDEPTH(ms) Log every result Log every 2nd result Log every 4th result Log every 8th result NO.OFCHANNELS ADCCHANNELS MONITORED 0 ...
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... Integrated Products PMBus Power-Supply Data Logger MAX34446 MFR_VOUT_PEAK (D4h) ...
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... Warnings do not latch a chan- nel off Latchoff disabled Latchoff enabled Never assert the FAULTn pin Assert the FAULTn pin on faults only Assert the FAULTn pin on faults or warnings. MAX34446 MFR_FAULT_RESPONSE (D9h) MEANING power DD MFR_FAULT_RETRY (DAh) MFR_PG_DELAY (DBh) ...
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... FAULT OR (255 BYTES) WARNING OCCURRENCE FAULT LOG INDEX 63 (255 BYTES) MAX34446 MFR_NV_FAULT_LOG (DCh) 4CHANNELSENABLED 20 Readings for ADC0, Data Buffer Readings for ADC1, Data Buffer Readings for ADC2, Data Buffer Readings for ADC3, Data Buffer ...
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... MAX34446 describes the 255 bytes returned by the PARAMETER DATA BUFFER 34 DATA BUFFER 35 DATA BUFFER 36 DATA BUFFER 37 DATA BUFFER 38 DATA BUFFER 39 DATA BUFFER 40 DATA BUFFER 41 DATA BUFFER 42 DATA BUFFER 43 ...
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... MAX34446 PARAMETER DATA BUFFER 67 DATA BUFFER 68 DATA BUFFER 69 DATA BUFFER 70 DATA BUFFER 71 DATA BUFFER 72 DATA BUFFER 73 DATA BUFFER 74 DATA BUFFER 75 DATA BUFFER 76 DATA BUFFER 77 DATA BUFFER 78 DATA BUFFER 79 ...
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... PMBus Power-Supply Data Logger DD Figure 3 for more timing details. DIVIDEINTEGER (MHz) (DECIMAL 125 4 200 MAX34446 MFR_TIME_COUNT (DDh) is above 2.9V. The counter is a 32-bit value MFR_POUT_PEAK (E0h) MFR_POUT_AVG (E1h) MFR_IOUT_AVG (E2h) MFR_TEMPERATURE_AVG (E3h) MFR_SYNC_CONFIG (EFh) SYNCFREQUENCY (SYSTEMOSCILLATOR/INTEGER) (kHz) 500 160 32 20 ...
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... RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE 40 TQFN-EP MAX34446 Ordering Information TEMPRANGE PIN-PACKAGE -40NC to +105NC 40 TQFN-EP* -40NC to +105NC ...
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... POWER- OUTPUTS MAX34446 POWER CONTROL 2.5V OUTPUTS V REG 16-BIT MAXQ RISC CORE 1.8V V REG PU ADC TEMP SENSOR SMBus SLAVE FLASH RAM MAX34446 PG0 PG1 GOOD PG2 PG3 SYNC FAULT0 FAULT1 FAULT2 FAULT FAULT3 FAULT4 FAULT5 FAULT6 4 CHANNELS OF MONITORED VOLTAGE OR CURRENT RS+0 RS-0 RS+1 RS-1 RS+2 RS-2 MAX9938 RS+3 CURRENT ...
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... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2011 Maxim Integrated Products © PMBus Power-Supply Data Logger DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc. MAX34446 Revision History PAGES CHANGED — 36 ...