Datasheet LTC7132 (Analog Devices) - 10

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ELECTRICAL CHARACTERISTICS Note 10:
The maximum programmable VOUT voltage is 5.5V when the
Note 17:
The LTC7132 includes overtemperature protection that is output voltage range is High and 2.75V when the output voltage range is intended to protect the device during momentary overload conditions. Low. Junction temperature will exceed 125°C when overtemperature protection
Note 11:
The maximum V is active. Continuous operation above the specified maximum operating IN voltage is 20V.
Note 12:
EEPROM endurance and retention are guaranteed by design, junction temperature may impair device reliability. characterization and correlation with statistical process controls. Data
Note 18:
Write operations above TJ = 85°C or below 0°C are possible retention is production tested via a high temperature at wafer level. The although the Electrical Characteristics are not guaranteed and the EEPROM minimum retention specification applies for devices whose EEPROM will be degraded. Read operations performed at temperatures below 125°C has been cycled less than the minimum endurance specification. The will not degrade the EEPROM. Writing to the EEPROM above 85°C will RESTORE_USER_ALL command (NVM read) is valid over the entire result in a degradation of retention characteristics. operating junction temperature range.
Note 19:
Properly adjust the input current sensing resistor RVIN to set the
Note 13:
MFR_PWM_MODE[1]=1 or 0 sets the output voltage range Low sensing voltage within the maximum voltage of 150mV. or High.
Note 14:
MFR_PWM_MODE_[5] = 0 or 1 sets the temperature 62 measurement method through ∆VBE, or through 2VBE. 56
Note 15:
MFR_PWM_MODE[2] = 1 or 0 sets device in ultralow DCR mode 50 or typical DCR mode respectively. MFR_PWM_MODE[7]=1 or 0 sets device 43 in high output current range or low current range. See “Output Current 37 Sensing and Sub-Milliohm DCR Current Sensing” in Operation Section for details. Only V (kΩ) 31 LIMIT codes 1-9 are supported for DCR sensing. R TH
Note 16:
The LTC7132 quiescent current (I 25 Q) equals the IQ of VIN plus the IQ of EXTVCC. 19 12 6 0 0 5 10 15 20 25 30 35 CODE 7132 F01
Figure 1. Programmable RTH
Rev 0 10 For more information www.analog.com Document Outline Features Applications Typical Application Description Table of Contents Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Overview Main Control Loop EEPROM Power-Up and Initialization Soft-Start Time-Based Sequencing Voltage-Based Sequencing Shutdown Light-Load Current Operation Switching Frequency and Phase PWM Loop Compensation Output Voltage Sensing INTVCC/EXTVCC Power Output Current Sensing and Sub-Milliohm DCR Current Sensing Input Current Sensing PolyPhase Load Sharing External/Internal Temperature Sense RCONFIG (Resistor Configuration) Pins Fault Detection and Handling Status Registers and ALERT Masking Mapping Faults to FAULT Pins Power Good Pins CRC Protection Serial Interface Communication Protection Device Addressing Responses to VOUT and IIN/IOUT Faults Output Overvoltage Fault Response Output Undervoltage Response Peak Output Overcurrent Fault Response Responses to Timing Faults Responses to VIN OV Faults Responses to OT/UT Faults Internal Overtemperature Fault Response External Overtemperature and Undertemperature Fault Response Responses to Input Overcurrent and Output Undercurrent Faults Responses to External Faults Fault Logging Bus Timeout Protection Similarity Between PMBus, SMBus and I2C 2-Wire Interface PMBus Serial Digital Interface PMBus Command Summary PMBus Commands *Data Format Applications Information Current Limit Programming ISENSE0± and ISENSE1± Pins Inductor DCR Sensing Inductor Value Calculation Inductor Core Selection Low Value Resistor Current Sensing Slope Compensation and Inductor Peak Current Variable Delay Time, Soft-Start and Output Voltage Ramping Digital Servo Mode Soft Off (Sequenced Off) INTVCC/EXTVCC Power Topside MOSFET Driver Supply (CB, DB) Undervoltage Lockout CIN and COUT Selection Fault INDICATION Open-Drain Pins Phase-Locked Loop and Frequency Synchronization Minimum On-Time Considerations External Temperature Sense Input Current Sense Amplifier External Resistor Configuration Pins (RCONFIG) Voltage Selection Frequency Selection Phase Selection Address Selection Using RCONFIG Efficiency Considerations Thermal Considerations Programmable Loop Compensation Checking Transient Response PolyPhase Configuration PC Board Layout Checklist PC Board Layout Debugging Design Example Additional Design Checks Connecting the USB to I2C/SMBus/PMBus Controller to the LTC7132 in System LTpowerPlay: An Interactive GUI for Digital Power PMBus Communication and Command Processing PMBus Command Details Addressing and Write Protect General Configuration Commands On/Off/Margin PWM Configuration Voltage Input Voltage and Limits Output Voltage and Limits Output Current and Limits Input Current and Limits Temperature External Temperature Calibration Timing Timing—On Sequence/Ramp Timing—Off Sequence/Ramp Precondition for Restart Fault Response Fault Responses All Faults Fault Responses Input Voltage Fault Responses Output Voltage Fault Responses Output Current Fault Responses IC Temperature Fault Responses External Temperature Fault Sharing Fault Sharing Propagation Fault Sharing Response Scratchpad Identification Fault Warning and Status Telemetry NVM Memory Commands Store/Restore Fault Logging Block Memory Write/Read Typical Applications Package Description Typical Application Related Parts