Overview
The LTM4677IY#PBF, produced by Analog Devices Inc., is a dual 18A or single 36A step-down µModule (power module) DC/DC regulator. This module is designed with advanced features such as remote configurability and telemetry monitoring of power management parameters over PMBus, an open standard I2C-based digital interface protocol. It integrates fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors, and supporting components. The module is particularly useful in applications requiring high current output and precise digital control and monitoring.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Output Current (Dual Channel) | 18A each | A |
| Output Current (Single Channel) | 36A | A |
| Input Voltage Range | 4.5V to 16V | V |
| Output Voltage Range | 0.5V to 1.8V | V |
| Maximum DC Output Error Over Temperature | ±0.5% | % |
| Current Readback Accuracy | ±2.5% | % |
| Switching Frequency | Up to 500kHz | kHz |
| PMBus Interface | 400kHz, I2C compliant | |
| Package Dimensions | 16mm × 16mm × 5.01mm | mm |
| Operating Temperature Range | -40°C to 125°C | °C |
Key Features
- Remote configurability and telemetry monitoring via PMBus
- Fast analog control loops with precision mixed-signal circuitry
- Integrated EEPROM for storing configuration data
- Supports output voltage margining, tuning, and ramping with programmable slew rates
- Readable data includes input and output voltages, currents, temperatures, and uptime
- Onboard fault log record with ECC
- Digital soft-start/stop ramp and OV/UV/OT protection
- Pin compatible with LTM4676A (dual 13A)
Applications
The LTM4677IY#PBF is suitable for various high-current applications, including:
- Telecom systems
- Datacom systems
- Storage systems
- Any system requiring precise digital control and monitoring of power management parameters
Q & A
- What is the output current capability of the LTM4677IY#PBF? The LTM4677IY#PBF can deliver up to 18A per channel in dual mode or up to 36A in single channel mode.
- What is the input voltage range for the LTM4677IY#PBF? The input voltage range is from 4.5V to 16V.
- What is the output voltage range of the LTM4677IY#PBF? The output voltage range is from 0.5V to 1.8V.
- What interface does the LTM4677IY#PBF use for remote configurability and telemetry? The LTM4677IY#PBF uses PMBus, an open standard I2C-based digital interface protocol.
- What are the key components integrated into the LTM4677IY#PBF? The module integrates fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors, and supporting components.
- What is the package size of the LTM4677IY#PBF? The package dimensions are 16mm × 16mm × 5.01mm.
- What is the operating temperature range of the LTM4677IY#PBF? The operating temperature range is from -40°C to 125°C.
- Does the LTM4677IY#PBF support output voltage margining and tuning? Yes, it supports output voltage margining, tuning, and ramping with programmable slew rates.
- What data can be read from the LTM4677IY#PBF? Readable data includes input and output voltages, currents, temperatures, and uptime.
- Is the LTM4677IY#PBF pin compatible with other models? Yes, it is pin compatible with the LTM4676A (dual 13A).
