MAX34461EVKIT# Maxim Integrated, MAX34461EVKIT# Datasheet
MAX34461EVKIT#
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MAX34461EVKIT# Summary of contents
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PMBus 16-Channel Voltage Monitor and Sequencer General Description The MAX34461 is a system monitor that is capable of managing power supplies. The power-supply manager monitors the power-supply output voltages and constantly checks for user-programmable overvoltage and undervoltage ...
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... Host Sends Improperly Set Read Bit in the Slave Address Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Unsupported Command Code Received/Host Writes to a Read-Only Command . . . . . . . . . . . . . . . . . . . . . . . . . 21 Invalid Data Received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Host Reads from a Write-Only Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Host Writes to a Read-Only Command SMBus Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 PMBus Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 PMBus Protocol Support Data Format Maxim Integrated TABLE OF CONTENTS MAX34461 2 ...
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... STORE_DEFAULT_ALL (11h MFR_STORE_SINGLE (FCh RESTORE_DEFAULT_ALL (12h CAPABILITY (19h VOUT_MODE (20h VOUT_MARGIN_HIGH (25h VOUT_MARGIN_LOW (26h VOUT_SCALE_MONITOR (2Ah VOUT_OV_FAULT_LIMIT (40h VOUT_OV_WARN_LIMIT (42h VOUT_UV_WARN_LIMIT (43h VOUT_UV_FAULT_LIMIT (44h OT_FAULT_LIMIT (4Fh OT_WARN_LIMIT (51h POWER_GOOD_ON (5Eh POWER_GOOD_OFF (5Fh TON_DELAY (60h TOFF_DELAY (64h Maxim Integrated TABLE OF CONTENTS (continued) MAX34461 3 ...
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... LOCAL vs. GLOBAL Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Fault Detection Before PSENn Assertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Logging Faults into MFR_NV_FAULT_LOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Power-Supply Retry with Undervoltage Faults MFR_FAULT_RETRY (DAh MFR_PG_DELAY (DBh MFR_NV_FAULT_LOG (DCh MFR_TIME_COUNT (DDh MFR_MARGIN_CONFIG (DFh Margining Faults DAC Margining Component Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Temperature-Sensor Operation Maxim Integrated TABLE OF CONTENTS (continued) MAX34461 4 ...
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... Figure 1. PMBus-Defined Time-Based Sequencing Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 2. Timeslot-Defined Event-Based Sequencing Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Figure 3. Multiple Device Hardware Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Figure 4. Sequencing Configurations Figure 5. Status Register Organization Figure 6. MFR_FAULT_RESPONSE Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Figure 7. MFR_NV_FAULT_LOG Figure 8. DAC Margining Circuit Figure 9. Current-Measuring Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Maxim Integrated TABLE OF CONTENTS (continued) LIST OF FIGURES MAX34461 5 ...
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... Table 26. MFR_FAULT_RESPONSE (Note 1 Table 27. MFR_FAULT_RESPONSE Codes for GLOBAL Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Table 28. MFR_FAULT_RESPONSE Codes for LOCAL Channels Table 29. MFR_NV_FAULT_LOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Table 30. MFR_MARGIN_CONFIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Table 31. Power-Supply Margining with DS4424 DAC outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Table 32. DS75LV Address Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Table 33. MFR_TEMP_SENSOR_CONFIG Table 34. Scale Current-Gain Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Maxim Integrated LIST OF TABLES MAX34461 6 ...
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... Output Logic-Low 2 (Except I C Pins) Output Logic-High 2 (Except I C Pins) Maxim Integrated Continuous Power Dissipation (T TQFN (derate 26.3mW/°C above +70°C)...............2105.3mW Operating Temperature Range .......................... -40°C to +85°C + 0.3V)* Storage Temperature Range ............................ -55°C to +125°C DD Lead Temperature (soldering, 10s) ................................+260°C Soldering Temperature (reflow) ......................................+260°C ...
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... Write Time RESTORE_DEFAULT_ALL Time MFR_STORE_SINGLE Write Time MFR_NV_FAULT_LOG Write Time MFR_NV_FAULT_LOG Delete Time MFR_NV_FAULT_LOG Overwrite Time TIMING OPERATING CHARACTERISTICS Voltage Sample Rate Temperature Sample Rate Device Startup Time Maxim Integrated SYMBOL CONDITIONS 4mA (Note 1) OL2 unconnected I2C DD ADC_TIME[1: 0° ...
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... Note 3: The round-robin threshold excursion rate can be changed with the ADC_AVERAGE and ADC_TIME bits in MFR_MODE from 16Fs (no averaging and 1Fs conversion) to 1024Fs (8x averaging and 8Fs conversion). SDA t BUF t LOW SCL t t HD:STA STOP START NOTE: TIMING IS REFERENCED TO V AND V IL(MAX) Maxim Integrated SYMBOL CONDITIONS f SCL f MSCL t BUF t HD:STA t LOW t HIGH Receive ...
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... PSEN0 THE PSEN PINS POWER HIGH-IMPEDANCE STATE 2V/div PSEN1 ADDRESS PINS DURING POWER-UP 2V/div V DD 2V/div A0/MONOFF 2V/div A1/PG Maxim Integrated Typical Operating Characteristics 100 MAX34461 toc03 TON_DELAY = 0ms TON_DELAY = 10ms 20ms/div MAX34461 toc05 100nF TO GND AND 220kΩ PULLUP ON ...
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... RST PIN DURING POWER-UP 1V/div V DD 1V/div RST I vs. TIME DURING A NONVOLATILE DD 2V/div FAULT I DD 5mA/div 0mA Maxim Integrated Typical Operating Characteristics (continued) MAX34461 toc07 200µs/div LOG WRITE MAX34461 toc09 2ms/div MAX34461 V STEPS DURING MARGINING OUT MAX34461 toc08 V OUT 50mV/div ...
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... NAME TYPE** 1 RS4 AI 2 RS3 AI 3 RS2 AI 4 RS1 AI 5 RS0 A0/MONOFF 7 V Power DDA 8 N.C. — 9 DIO FAULT Maxim Integrated PSEN5 37 PSEN6 38 39 PSEN7 40 RS13 41 RS12 42 RS11 MAX34461 43 RS10 44 RS9 45 RS8 46 RS7 47 RS6 + 48 RS5 1 2 ...
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... DO 38 PSEN6 DO 39 PSEN7 DO 40 RS13 AI Maxim Integrated Power-Supply Master On/Off Control. Active low or active high based on the ON_OFF_ CONFIG command. Active-Low Reset Input/Output. Contains an internal pullup. ADC Voltage-Sense Input 15. Connect C/SMBus-Compatible Input/Open-Drain Output 2 I C/SMBus-Compatible Clock Input/Open-Drain Output Digital Supply Voltage ...
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... This output is unconditionally deasserted when RST is asserted or the device is power cycled. Upon reset, this output is pulled low until monitoring starts. Maxim Integrated ADC Voltage-Sense Input 12. Connect to V ADC Voltage-Sense Input 11. Connect to V ADC Voltage-Sense Input 10. Connect to V ADC Voltage-Sense Input 9 ...
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... Detailed Description The MAX34461 is a highly integrated system monitor with functionality to monitor power supplies. The device provides power-supply voltage monitoring and sequencing. It can also provide closed-loop margining control and local/remote thermal-sensing facilities. Maxim Integrated PMBus CONTROL AND MONITORING ENGINE POWER-SUPPLY ...
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... STATUS_MFR_SPECIFIC 8Bh READ_VOUT 8Dh READ_TEMPERATURE_1 98h PMBUS_REVISION Maxim Integrated temperature sensors. Communications with the DS75LV temperature sensors is conducted through a dedicated 2 I C/SMBus interface. The device provides ALERT and FAULT output signals. Host communications are conducted through a PMBus- compatible communications port. ...
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... Note 3: The factory-set value is dependent on the device hardware and firmware revision. Note 4: The factory-set default value for this 8-byte block is 3130313031303130h. Note 5: The factory-set default value for the complete block of the MFR_NV_FAULT_LOG is FFh. Note 6: The factory-set default value for this 4-byte block is 00000000h. Maxim Integrated PAGE PAGE PAGE 0– ...
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... Note: The device also responds to a slave address of 34h (this is the factory programming address) and the device should not 2 share the same I C bus with other devices that use this slave address. Maxim Integrated Address Select The device implements the PMBus command structure using the SMBus format. The structure of the data flow ...
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... SLAVE COMMAND ADDRESS WRITE BYTE FORMAT SLAVE COMMAND ADDRESS SEND BYTE FORMAT SLAVE ADDRESS Maxim Integrated SLAVE A Sr CODE ADDRESS SLAVE A Sr CODE ADDRESS DATA BYTE A A CODE ...
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... If the ALERT output is enabled (ALERT bit = 1 in MFR_MODE), when a fault occurs the device asserts the ALERT signal and then waits for the host to send an ARA, Maxim Integrated Group Command data stream. All the devices addressed during this trans- action wait for the host to issue a STOP before beginning to respond to the command ...
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... Sends all ones (FFh) as long as the host keeps acknowledging. 2) Sets the CML bit in STATUS_WORD. 3) Sets the DATA_FAULT bit in STATUS_CML. 4) Notifies the host through ALERT assertion (if enabled). Maxim Integrated ARA DEVICE SLAVE ADDRESS ...
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... Write Byte, Read Byte, Send Byte, etc.) to program out- put voltage and warning/fault thresholds, read monitored data, and provide access to all manufacturer-specific commands. Maxim Integrated 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 receive the same command ...
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... X = (1/ where X is the calculated, real-world value in the appro- priate units (i.e., V, NC, etc.); m is the slope coefficient the 2-byte, two’s complement integer received from the PMBus device the offset; and R is the exponent. Maxim Integrated COMMANDS UNITS mV — ...
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... GLOBAL of the supplies keeps all GLOBAL turned on. Maxim Integrated Upon a system-wide power-up (OPERATION command is received to turn the supplies on when PAGE is 255 or the CONTROL pin is toggled to turn on the supplies), all enabled age- or overtemperature-fault responses enabled with ...
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... ALTERNATE POWER-DOWN SEQUENCING OPERATION IS TO SHUT OFF ALL SUPPLIES IMMEDIATELY. 3. THE FAULT PIN BEING ASSERTED LOW CAN ALSO CAUSE A POWER-DOWN SEQUENCE TO OCCUR ON GLOBAL CHANNELS. Figure 1. PMBus-Defined Time-Based Sequencing Example Maxim Integrated FAULT_LIMIT). After all enabled supplies are turned on and above their respective power-good-on levels (as configured in POWER_GOOD_ON), the PG output transitions high ...
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... IF TON_MAX_FAULT_LIMIT = 0000h, THEN THE START OF THE NEXT TIMESLOT DOES NOT DEPEND ON VOUT_UV_FAULT_LIMIT. 4. THE FAULT PIN BEING ASSERTED LOW CAN ALSO CAUSE A POWER-DOWN SEQUENCE TO OCCUR ON GLOBAL CHANNELS. Figure 2. Timeslot-Defined Event-Based Sequencing Example Maxim Integrated tored to make sure that the PSEN0 supply crosses the undervoltage-fault limit (as configured in VOUT_UV_ ...
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... TOFF_DELAY configuration. Alternatively, all the power supplies can be switched off immediately, as configured in ON_OFF_CONFIG or with the OPERATION command. Multiple Device Connections IMultiple MAX34461 devices (or even other MAX3445x and MAX3446x PMBus system managers from the Maxim Integrated family) can be connected together COMMON CONTROL/OPERATION SEQUENCING MAX34461 SCL/SDA ...
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... To allow the device to properly 2 set the I C address, this pin should be high impedance Maxim Integrated upon power-up or device reset (it is recommended that a small-signal MOSFET be used to pull this pin low). See the Typical Operating Circuit ...
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... External DS75LV temperature sensor with I 20 External DS75LV temperature sensor with I 21 External DS75LV temperature sensor with I 22–254 Reserved. 255 Applies to all pages. Maxim Integrated ASSOCIATED CONTROL 2 C address 90h address 92h address 94h address 96h. MAX34461 ...
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... Note: The device only takes action if the supply is enabled. The V OUT of all channels must exceed POWER_GOOD_ON for margin- ing to begin, or power good must be forced good through the test mode. Maxim Integrated OPERATION (01h) margined, the device treats this as a warning or fault and responds as programmed. “ ...
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... Enables writes for all commands (default). Note: No fault or error is generated if the host attempts to write to a protected area. Maxim Integrated conditions is not affected by this command and changes only if commanded through the OPERATION com- mand or CONTROL pin fault is still present after the CLEAR_FAULTS command is executed, the fault status bit is immediately set again, but ALERT is not reasserted ...
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... DESCRIPTION 7 Packet-error checking 6:5 PMBus speed 4 ALERT 3:0 Reserved Maxim Integrated not be used for commands that are not stored in flash. See Table 1 flash. USER NOTE: V perform the MFR_STORE_SINGLE command. The RESTORE_DEFAULT_ALL command transfers the default configuration information from the internal flash memory array to the user memory registers in the device. ...
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... ADC voltage on the device is 2.048V. A scaling factor where a 1.8V ADC input represents a nominal 100% voltage level is recommended to allow headroom for margining. Resistor-dividers with a maximum source impedance of 1k Ω must be used to measure voltage greater than 1.8V. Maxim Integrated 2) Sets the MARGIN_FAULT bit in STATUS_MFR_ 3) Notifies the host through ALERT assertion (if enabled ...
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... VOUT_OV_WARN_LIMIT being exceeded, the device does the following: 1) Sets the VOUT bit in STATUS_WORD. 2) Sets the VOUT_OV_WARN bit in STATUS_VOUT. Maxim Integrated 3) Notifies the host using ALERT assertion (if enabled in The VOUT_UV_WARN_LIMIT command sets the value of the output voltage that causes an output-voltage low warning ...
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... Unused channels or disabled power supplies can use the test mode described in the user note below to force power good on the associated channel. All power Maxim Integrated 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 ...
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... See Table 14 for more details. In response to the TON_MAX_FAULT_LIMIT being exceeded, the device does the following: Maxim Integrated DEVICE RESPONSE (FOR EACH ASSOCIATED PAGE) (NOTE 1) SEQUENCING RESPONSE Device asserts PSENn and monitors RSn to cross the undervoltage-fault limit in the time set by TON_MAX_FAULT_LIMIT. ...
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... PMBus 16-Channel Voltage Monitor and Sequencer STANDARD SEQUENCING TON_MAX_FAULT_LIMIT = 0001h TO 7FFFh BLIND SEQUENCING TON_MAX_FAULT_LIMIT = 0000h MONITORING ONLY TON_MAX_FAULT_LIMIT = 0000h TON_MAX_FAULT_LIMIT = 8000h TO FFFFh Figure 4. Sequencing Configurations Maxim Integrated MAX34461 SEQUENCER GPO OV/UV MONITOR READ_VOUT / PG MAX34461 SEQUENCER GPO OV/UV MONITOR READ_VOUT /PG MAX34461 SEQUENCER GPO OV/UV MONITOR ...
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... WATCHDOG_INT EVENT LATCH CONTROL# CLEAR_FAULTS COMMAND ALERT RESPONSE ADDRESS (ARA) RECEIVED AND ARBITRATION WON ALERT BIT IN MFR_MODE Figure 5. Status Register Organization Maxim Integrated MAX34461 NOTE EVENT IS STILL PRESENT WHEN THE CLEAR_FAULTS COMMAND IS ISSUED, THE BIT IS IMMEDIATELY ASSERTED ONCE AGAIN. ...
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... VOUT_UV_FAULT 3 2 TON_MAX_FAULT 1 0 Maxim Integrated The STATUS_VOUT command returns 1 byte of informa- tion with contents, as described in in STATUS_VOUT are latched. When cleared, the bits are set again if the condition persists the case of TON_MAX_FAULT, when the event occurs again. V OUT overvoltage fault. ...
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... NV Fault Log Overwrite is enabled (NV_LOG_OVERWRITE = 1 in MFR_NV_LOG_CONFIG), FAULT_LOG_FULL will be set when the fault log is full but will clear when the fault log is overwritten since two fault logs are cleared before each overwrite. Maxim Integrated The STATUS_CML command returns 1 byte of infor- Table 17 ...
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... Note 1: The setting of the LOCK bit does not assert the ALERT signal. Note 2: The FAULT status bit is set even if the FAULT pin is configured in MFR_MODE to ignore the FAULT pin. Note 3: ON_OFF_CONFIG must be set to use the CONTROL pin for this status bit to function. Maxim Integrated The READ_VOUT command returns the actual measured Table 19 (not commanded) output voltage ...
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... The MFR_MODEL command returns the text (ISO/IEC 8859-1) character of the device model number. The default MFR_MODEL value is 56h (V). This command is read-only. Maxim Integrated The MFR_REVISION command returns two text (ISO/ IEC 8859-1) characters that contain the device revision numbers for hardware (upper byte) and firmware (lower byte) ...
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... FAULT_IGNORE 3:2 ADC_AVERAGE[1:0] 1:0 0 Maxim Integrated MFR_MODE (D1h) MFR_MODE command should not be changed while power supplies are operating. The MFR_MODE com- mand is described in These bits set the sequencing configuration for the primary sequencing group. The secondary sequencing group should not use cascaded sequencing if the group involves multiple devices ...
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... Table 23. MFR_PSEN_CONFIG BIT NAME 7 PSEN_PP_OD 6 PSEN_HI_LO 5 OVERRIDE Maxim Integrated be changed while the power supplies are operating. The MFR_PSEN_CONFIG command is described in and PSENn CONFIGURATION Normal power-supply enable/disable control action Override action (GPO mode PSENn push-pull output PSENn open-drain output PSENn active-low. ...
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... BIT NAME 7:4 0 3:0 TIMESLOT[3:0] Maxim Integrated MFR_TEMPERATURE_PEAK (D6h) The MFR_TEMPERATURE_PEAK command returns the maximum measured temperature. To reset this value to its lowest value, write to this command with a data value of 8000h. Any other values written by this command are used as a comparison for future peak updates. The 2 data bytes are in DIRECT format ...
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... NV_LOG_DEPTH[1:0] 6 NV_LOG_FAULT 5:0 0 *The device clears two fault logs at a time when overwrite is enabled. Maxim Integrated in the device. The MFR_NV_LOG_CONFIG command is described in Setting this bit forces the device set, the device clears this bit when the action is completed. The host must set again for subsequent action error occurs during this action, the device sets the CML bit in STATUS_WORD ...
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... This response is the worst-case response of the GLOBAL channels for the given fault. Supplies that are not GLOBAL respond to a temperature fault based upon the programmed response for the particular supply. Maxim Integrated differently to each possible fault. When bit 14 is set, the ...
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... To keep from needlessly filling the fault log with excessive data, the following rules are applied when subsequent faults occur. When overvoltage faults occur, subsequent overvoltage faults on this channel are not written to the Maxim Integrated MFR_FAULT_RESPONSE FAULT WARNING ON_OFF_CONFIG BIT 0 ...
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... ON_OFF_CONFIG. (latchoff) • Set the corresponding fault bit in the appropriate status register. • Log fault into MFR_NV_FAULT_LOG if NV_LOG = 1. • Set the corresponding fault bit in the appropriate status register. 00 • Continue operation without any action. Note: ALERT is asserted, if enabled, when a new status bit is set. A status bit is latched when a particular fault occurs that causes a fault response. Maxim Integrated FAULT RESPONSE FAULT RESPONSE MAX34461 49 ...
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... READ_TEMPERATURE_1 MFR_VOUT_PEAK MFR_TEMPERATURE_PEAK MFR_VOUT_MIN MFR_TEMPERATURE_AVG Figure 7. MFR_NV_FAULT_LOG Maxim Integrated MFR_PG_DELAY is also used to set the external signal watchdog WDO active-low time. For the watchdog func- tion, when MFR_PG_DELAY = 0000h, the WDO active- low time is set to 5ms. Each time the MFR_NV_FAULT_LOG command is exe- cuted, the device returns a block of 255 bytes containing one of the 15 nonvolatile fault logs ...
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... READ_VOUT T1 PAGE 0 64 READ_VOUT T2 PAGE 0 66 READ_VOUT T0 PAGE 1 Maxim Integrated If an error occurs while the device is attempting to write or clear the MFR_NV_FAULT_LOG, the device sets the CML bit in STATUS_WORD; no bits are set in STATUS_ CML. ALERT is asserted (if enabled in MFR_MODE). USER NOTE: V clear or log data into MFR_NV_FAULT_LOG. ...
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... MFR_TIME_COUNT (DDh) The MFR_TIME_COUNT command returns the current value of a real-time counter that increments every 5ms, 20ms, 80ms, or 160ms depending on the configuration of the NV_LOG_DEPTH bits in MFR_NV_LOG_CONFIG. This counter is useful in determining the time between Maxim Integrated BYTE PARAMETER 196 MFR_VOUT_MIN PAGE 2 198 ...
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... PSEN12 13 PSEN13 14 PSEN14 15 PSEN15 Maxim Integrated of the supplies does not begin until ALL power supplies have exceeded their programmed POWER_GOOD_ON levels. When this happens, the DAC output is enabled and margining is initiated. The device then averages four samples of V 30. measured V MARGIN_HIGH or VOUT_MARGIN_LOW) differ by more ...
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... OUT I FB FB/TRIM R FS Figure 8. DAC Margining Circuit Maxim Integrated Margining Faults The device can monitor up to five different temperature to exceed the tar- sensors, four external sensors, plus its own internal tem- OUT perature sensor. The external temperature sensors are all connected in parallel to the master I MSCL pins) ...
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... RSn VOUT_SCALE_MONITOR = 32,767 TON_MAX_FAULT_LIMIT = 8000h TO FFFFh POWER_GOOD_ON = 0000h Figure 9. Current-Measuring Circuit Maxim Integrated In systems where the power to the device may be not MEANING always be present, a keep-alive circuit consisting of a Schottky diode and a bulk capacitor can be added to allow the device time to orderly shut down the power supplies it is controlling before power is lost ...
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... SENSE ELEMENT (mI 0.5 Maxim Integrated of voltage, the VOUT_SCALE_MONITOR command can be configured to report current from 0A to 32.767A in 1mA steps by using the following formula. some examples. Note that VOUT_SCALE_MONITOR can- not exceed a ratio of 1. System designs should avoid RG combinations with a value greater than 1. ...
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... SENSOR SENSORS ADDRESSES ( 90/92/94/96h) 3.3V OPTIONAL OPTIONAL KEEP CONFIGURATION ALIVE ACCESS HOST INTERFACE POWER CONTROL MONITORING DEFEAT Maxim Integrated Typical Operating Circuit POWER SUPPLY IN OPTIONAL PSEN0–PSEN3/ MSDA EN PSEN12–PSEN15 MSCL V DDA RS0–RS3/ RS12–RS15 CHANNELS MAX34461 RSG0 ...
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... MAX34461ETM+T -40NC to +85NC +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad Tape and reel. Maxim Integrated For the latest package outline information and land patterns (foot- PIN-PACKAGE prints www.maximintegrated.com/packages. Note that a 48 TQFN-EP* “+”, “#”, or “-” in the package code indicates RoHS status only. ...
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... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 2012 Maxim Integrated Products, Inc. © DESCRIPTION The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. MAX34461 Revision History PAGES CHANGED — ...