LT7171
Analog Devices
This reference manual describes the digital communications capabilities of the LT7171/LT7171-1, including the functionality of each LT7171/LT7171-1 PMBus command.
Design DocumentAnalog
LT7171/LT7171-1 PMBus/I2C Reference Manual
Technical reference manual for the LT7171 and LT7171-1, detailing PMBus, SMBus, and I2C communication protocols, command sets, and digital configuration registers.
Overview
This reference manual describes the digital communication capabilities and PMBus command functionality for the Analog Devices LT7171 and LT7171-1 monolithic step-down regulators. It provides technical specifications for PMBus Revision 1.3.1 and SMBus Revision 3.1 compliance. The document includes a comprehensive command summary and detailed register descriptions for device addressing, write protection, PWM configuration, and operational settings. It covers parameters for input/output voltage limits, current limits, temperature monitoring, and sequencing timing, including TON_DELAY and TON_RISE. Users can find specific guidance on manufacturing-specific commands for channel and phase configuration.
Use Cases
- Programming digital power management parameters
- Configuring voltage and current limits via PMBus
- Implementing I2C/SMBus communication in power systems
- Setting up power-up sequencing and fault thresholds
- Monitoring system telemetry and device status
Topics
LT7171
LT7171-1
PMBus
I2C
SMBus
Digital Power Management
Step-down Regulator
Command Summary
Register Map
Analog Devices
Referenced Parts
LT7171-1
Analog Devices
This reference manual describes the digital communications capabilities of the LT7171/LT7171-1, including the functionality of each LT7171/LT7171-1 PMBus command.
0x62
Maxim
TON_MAX_FAULT_LIMIT 0x62 Maximum time from the
0x62
Maxim
TON_MAX_FAULT_LIMIT 0x62 Maximum time from start of
0x66
Maxim
TOFF_MAX_WARN_LIMIT 0x66 Maximum allowed time, after
0x66
Maxim
TOFF_MAX_WARN_LIMIT 0x66 Maximum allowed time,
0xD7
Maxim
MFR_IOUT_PEAK 0xD7 Maximum READ_IOUT. R word A No N/A
0xDD
Maxim
MFR_VOUT_PEAK 0xDD Maximum measured value
0xDD
Maxim
MFR_VOUT_PEAK 0xDD Maximum READ_VOUT. R word V No N/A
0xDE
Maxim
MFR_VIN_PEAK 0xDE Maximum measured value
0xDE
Maxim
MFR_VIN_PEAK 0xDE Maximum READ_VIN. R word V No N/A
0xDF
Maxim
0xDF Maximum measured value
0xDF
Maxim
MFR_TEMPERATURE_1_PEAK 0xDF Maximum
1.375V
Maxim
1.375V maximum 2.75V maximum 5.5V maximum
| LT7171 | Analog Devices | This reference manual describes the digital communications capabilities of the LT7171/LT7171-1, including the functionality of each LT7171/LT7171-1 PMBus command. |
| LT7171-1 | Analog Devices | This reference manual describes the digital communications capabilities of the LT7171/LT7171-1, including the functionality of each LT7171/LT7171-1 PMBus command. |
| 0x62 | Maxim | TON_MAX_FAULT_LIMIT 0x62 Maximum time from the |
| 0x62 | Maxim | TON_MAX_FAULT_LIMIT 0x62 Maximum time from start of |
| 0x66 | Maxim | TOFF_MAX_WARN_LIMIT 0x66 Maximum allowed time, after |
| 0x66 | Maxim | TOFF_MAX_WARN_LIMIT 0x66 Maximum allowed time, |
| 0xD7 | Maxim | MFR_IOUT_PEAK 0xD7 Maximum READ_IOUT. R word A No N/A |
| 0xDD | Maxim | MFR_VOUT_PEAK 0xDD Maximum measured value |
| 0xDD | Maxim | MFR_VOUT_PEAK 0xDD Maximum READ_VOUT. R word V No N/A |
| 0xDE | Maxim | MFR_VIN_PEAK 0xDE Maximum measured value |
| 0xDE | Maxim | MFR_VIN_PEAK 0xDE Maximum READ_VIN. R word V No N/A |
| 0xDF | Maxim | 0xDF Maximum measured value |
| 0xDF | Maxim | MFR_TEMPERATURE_1_PEAK 0xDF Maximum |
| 1.375V | Maxim | 1.375V maximum 2.75V maximum 5.5V maximum |