MAX34440ETL+T Maxim Integrated, MAX34440ETL+T Datasheet
MAX34440ETL+T
Specifications of MAX34440ETL+T
Related parts for MAX34440ETL+T
MAX34440ETL+T Summary of contents
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... C/SMBus-Compatible Serial Bus with Bus Timeout Function S On-Board Nonvolatile Fault Logging and Default Configuration Setting S No External Clocking Required S +3.3V Supply Voltage Ordering Information PART TEMP RANGE MAX34440ETL+ -40NC to +85NC MAX34440ETL+T -40NC to +85NC +Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. *EP = Exposed pad. Features PIN-PACKAGE 40 TQFN-EP* 40 TQFN-EP* ...
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PMBus 6-Channel Power-Supply Manager Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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PMBus 6-Channel Power-Supply Manager TABLE OF CONTENTS (continued) PMBus Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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PMBus 6-Channel Power-Supply Manager TABLE OF CONTENTS (continued) MFR_MODEL (9Ah ...
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PMBus 6-Channel Power-Supply Manager Figure 1. Power-Supply Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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PMBus 6-Channel Power-Supply Manager ABSOLUTE MAXIMUM RATINGS ...........................................................-0.3V to +5. RS ............................................................-0.3V to +0.3V SS All Other Pins Except REG18 and REG25 Relative to V ........................ -0. Continuous Power Dissipation ...
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PMBus 6-Channel Power-Supply Manager DC ELECTRICAL CHARACTERISTICS (continued 2.7V to 5.5V -40NC to +85NC, unless otherwise noted. Typical values are PARAMETER SYMBOL ADC Internal Reference Initial Accuracy (+25NC) ADC Full-Scale Input Voltage ...
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PMBus 6-Channel Power-Supply Manager 2 I C/SMBus INTERFACE ELECTRICAL SPECIFICATIONS (V = 2.7V to 5.5V -40NC to +85NC, unless otherwise noted. Typical values are PARAMETER SYMBOL SCL Clock Frequency Bus Free Time Between STOP ...
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PMBus 6-Channel Power-Supply Manager (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. TEMPERATURE 2.6 2.5 2.4 2 3.3V DD 2.2 2.1 2.0 -40 - TEMPERATURE (°C) WEAK PULLUP VOLTAGE vs. TIME AT POR (UNLOADED ...
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PMBus 6-Channel Power-Supply Manager TOP VIEW A0/MUXSEL CONTROL PIN NAME 1 RS-4 Ground Reference for ADC4 Voltage Measurement 2, 21 Digital-Supply Return Node (Ground RS+4 Power-Supply ADC Voltage-Sense Input, Measurement Relative to RS-4 4 RS-3 Ground ...
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PMBus 6-Channel Power-Supply Manager PIN NAME PWM Margin Output #4. High impedance when the margining is disabled. A 100% duty cycle implies 18 PWM4 this pin is continuously high. Power-Supply Enable Output #4. Programmable through MFR_MODE for either active high ...
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PMBus 6-Channel Power-Supply Manager PIN NAME 39 RS-5 Ground Reference for ADC5 Voltage Measurement 40 RS+5 Power-Supply ADC Voltage-Sense Input, Measurement Relative to RS-5 — EP Exposed Pad (Bottom Side of Package). Connect Note: All pins except ...
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PMBus 6-Channel Power-Supply Manager +3.3V ALERT CLOCK HOST DATA INTERFACE CONTROL RST ADDITIONAL DEVICES Multiple Device Connection Diagram SDA SCL RST MAX34440 ALERT #0 FAULT CONTROL A1/PG A0/MUXSEL +3.3V SDA SCL RST MAX34440 ALERT #1 FAULT CONTROL A1/PG A0/MUXSEL 13 ...
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... OT_WARN_LIMIT 5Eh POWER_GOOD_ON 5Fh POWER_GOOD_OFF MAXQ is a registered trademark of Maxim Integrated Products, Inc. 14 the supplies in any order at both power-up and power- down. With the addition of an external current-sense amplifier, the device can also monitor currents. Thermal monitoring can be accomplished using up to ...
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PMBus 6-Channel Power-Supply Manager Table 1. PMBus Command Codes (continued) CODE COMMAND NAME 60h TON_DELAY 62h TON_MAX_FAULT_LIMIT 64h TOFF_DELAY 78h STATUS_BYTE 79h STATUS_WORD 7Ah STATUS_VOUT 7Eh STATUS_CML 80h STATUS_MFR_SPECIFIC 8Bh READ_VOUT 8Ch READ_IOUT 8Dh READ_TEMPERATURE_1 98h PMBUS_REVISION 99h MFR_ID 9Ah ...
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PMBus 6-Channel Power-Supply Manager Table 2. PMBus/SMBus Serial-Port Address A1 A0 100kI 100kI 100kI 100kI 100kI 100kI Note: The MAX34440 will also ...
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PMBus 6-Channel Power-Supply Manager The device supports the group command. With the group command, a host can write different data to multiple devices on the same serial bus with one long SLAVE ADDRESS, COMMAND BYTE, AND DATA WORD FOR DEVICE ...
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PMBus 6-Channel Power-Supply Manager 1 S 0001100 Host Sends or Reads Too Few Bits If for any reason the host does not complete writing a full byte or reading a full byte from the device before a START or STOP ...
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PMBus 6-Channel Power-Supply Manager Host Reads from a Write-Only Command When a read request is issued to a write-only command (CLEAR_FAULTS, STORE_DEFAULT_ALL, RESTORE_DEFAULT_ALL), the device does the following: 1) ACKs the address byte. 2) Ignores the command. 3) Sends all ...
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PMBus 6-Channel Power-Supply Manager Table 3. PMBus Command Code Coefficients PARAMETER COMMANDS VOUT_MARGIN_HIGH VOUT_MARGIN_LOW VOUT_OV_FAULT_LIMIT VOUT_OV_WARN_LIMIT VOUT_UV_WARN_LIMIT Voltage VOUT_UV_FAULT_LIMIT POWER_GOOD_ON POWER_GOOD_OFF READ_VOUT MFR_VOUT_PEAK MFR_VOUT_MIN Voltage Scaling VOUT_SCALE_MONITOR IOUT_OC_WARN_LIMIT IOUT_OC_FAULT_LIMIT Current READ_IOUT MFR_IOUT_PEAK Current Scaling IOUT_CAL_GAIN OT_FAULT_LIMIT OT_WARN_LIMIT Temperature READ_TEMPERATURE_1 MFR_TEMPERATURE_PEAK ...
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PMBus 6-Channel Power-Supply Manager Fault Management and Reporting For reporting faults/warnings to the host on a real-time basis, the device asserts the open-drain ALERT pin (if enabled in MFR_MODE) and sets the appropriate bit in the various status registers. On ...
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PMBus 6-Channel Power-Supply Manager Temperature Sensor Operation The device can monitor up to eight different temperature sensors, seven external sensors plus its own internal temperature sensor. The external temperature sensors are all connected in parallel to the master I (MSDA ...
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PMBus 6-Channel Power-Supply Manager A summary of the PMBus commands supported by the device are described in the following sections. The device can control up to six power supplies and up to eight temperature sensors using one PMBus (I Send ...
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PMBus 6-Channel Power-Supply Manager The OPERATION command is used to turn the power supply on and off in conjunction with the CONTROL input pin. The OPERATION command is also used to cause the power supply to set the output voltage ...
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PMBus 6-Channel Power-Supply Manager The ON_OFF_CONFIG command configures the combination of CONTROL input and PMBus OPERATION commands needed to turn the power supply on and off. This indicates how the power supply is commanded when power is applied. Table 10 ...
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PMBus 6-Channel Power-Supply Manager The STORE_DEFAULT_ALL command instructs the device to transfer the device configuration information to the internal flash memory array. Not all information is stored. Only configuration data is stored, not any status, or operational data ...
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PMBus 6-Channel Power-Supply Manager The VOUT_MARGIN_LOW command loads the device with the voltage to which the power-supply output changed when the OPERATION command is set to margin low. If the power supply is already operating at margin ...
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PMBus 6-Channel Power-Supply Manager USER NOTE: On the device, the full-scale ADC voltage is 1.225V. The value of the sense resistor and current- sense amplifier gain must be scaled appropriately. The VOUT_OV_FAULT_LIMIT command sets the value of the output voltage ...
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PMBus 6-Channel Power-Supply Manager 4) Responds as specified in MFR_FAULT_RESPONSE. 5) Notifies the host using ALERT assertion (if enabled in MFR_MODE). The IOUT_OC_WARN_LIMIT command sets the value of the current that causes an overcurrent warning. This value is typically less ...
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PMBus 6-Channel Power-Supply Manager 4) Responds as specified in MFR_FAULT_RESPONSE. 5) Notifies the host using ALERT assertion (if enabled in MFR_MODE). The OT_WARN_LIMIT command sets the temperature, in degrees Celsius, of the selected temperature sensor at which an overtemperature warning ...
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PMBus 6-Channel Power-Supply Manager All the enabled power supplies must also be above POWER_GOOD_ON for power-supply margining to begin. The POWER_GOOD_ON level is normally set higher than the POWER_GOOD_OFF level and VOUT_UV_FAULT_LIMIT. The 2 data bytes are in DIRECT format. ...
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PMBus 6-Channel Power-Supply Manager immediately (either through the OPERATION command or the CONTROL pin), the TOFF_DELAY value is ignored. The 2 data bytes are in DIRECT format. The STATUS_BYTE command returns 1 byte of information with a summary of the ...
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PMBus 6-Channel Power-Supply Manager The STATUS_WORD command returns 2 bytes of information with a summary of the reason for a fault. The low byte of the STATUS_WORD is the same data as the STATUS_BYTE. Table 17 describes the STATUS_WORD message ...
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PMBus 6-Channel Power-Supply Manager The STATUS_MFR_SPECIFIC command returns 1 byte of information with a summary of the reason for a fault. The STATUS_MFR_SPECIFIC message content is described in Table 20. The READ_VOUT command returns the actual measured (not commanded) output ...
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PMBus 6-Channel Power-Supply Manager The MFR_SERIAL command loads the device with text (ISO/IEC 8859-1) characters that uniquely identify the device. The maximum number of characters is 8. This data is written to internal flash using the STORE_DEFAULT_ALL com- mand. The ...
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PMBus 6-Channel Power-Supply Manager The MFR_MODE command is used to configure the device to support manufacturer specific commands. The MFR_ MODE command is described in Table 21. The MFR_VOUT_PEAK command returns the maximum actual measured output voltage. To reset this ...
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PMBus 6-Channel Power-Supply Manager Table 23. MFR_FAULT_RESPONSE Codes RESPONSE SETTING [1:0] • Set the corresponding fault bit in the appropriate status register. 11 • Log fault into MFR_NV_FAULT_LOG if NV_LOG = 1. • Continue power-supply operation. • Set the corresponding ...
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PMBus 6-Channel Power-Supply Manager EACH FAULT IS WRITTEN INTO THE NEXT FAULT LOG RAM STATUS VOLTAGE CURRENT FAULT OCCURENCE TEMPERATURE Figure 2. MFR_NV_FAULT_LOG There is a FAULT_LOG_COUNT (16-bit counter) at the beginning of each fault log that indicates which fault ...
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PMBus 6-Channel Power-Supply Manager Table 24. MFR_NV_FAULT_LOG (continued) BYTE PARAMETER 42 MFR_VOUT_PEAK Page 5 44 MFR_IOUT_PEAK Page 0 46 MFR_IOUT_PEAK Page 1 48 MFR_IOUT_PEAK Page 2 50 MFR_IOUT_PEAK Page 3 52 MFR_IOUT_PEAK Page 4 54 MFR_IOUT_PEAK Page 5 56 MFR_TEMPERATURE_PEAK ...
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PMBus 6-Channel Power-Supply Manager If an error occurs while the device is attempting to write or clear the NV_FAULT_LOG, the device sets the CML bit in STATUS_BYTE and STATUS_WORD; no bits are set in STATUS_CML. ALERT is asserted (if enabled ...
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PMBus 6-Channel Power-Supply Manager 1) Sets the NONE OF THE ABOVE bit in STATUS_BYTE. 2) Sets the NONE OF THE ABOVE and MFR bits in STATUS_WORD. 3) Sets the MARGIN_FAULT bit in STATUS_MFR_SPECIFIC. Table 26. MFR_TEMP_SENSOR_CONFIG BIT BIT NAME Clearing ...
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PMBus 6-Channel Power-Supply Manager MAX6695 TWO REMOTE AND ONE LOCAL DS75LV TEMP SENSOR +3.3V HOST INTERFACE For the latest package outline information and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in ...
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