Overview
The LTM4675IY, produced by Analog Devices Inc., is a dual 9A or single 18A step-down µModule (micromodule) DC/DC regulator. This device is designed for high-current applications and features a fast turn-on time of 40ms. It integrates remote configurability and telemetry-monitoring of power management parameters via PMBus, an open standard I2C-based digital interface protocol. The LTM4675IY includes fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors, and supporting components, making it a comprehensive solution for advanced power management needs.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Input Voltage Range | 4.5V to 17V | V |
| Output Voltage Range | 0.5V to 5.5V | V |
| Maximum DC Output Error Over Temperature | ±0.5% | % |
| Current Readback Accuracy at 9A Load | ±2.5% | % |
| PMBus-Compliant I2C Serial Interface Frequency | 400kHz | kHz |
| Integrated ADC Type | 16-Bit ∆Σ ADC | |
| Telemetry Polling Rates | Up to 125Hz | Hz |
| Control Mode | Constant Frequency Current Mode | |
| Package Dimensions | 16mm × 11.9mm × 3.51mm | mm |
| Operating Temperature Range | -40°C to 125°C | °C |
Key Features
- Remote configurability and telemetry-monitoring via PMBus
- Fast analog control loops and precision mixed-signal circuitry
- Integrated EEPROM, power MOSFETs, inductors, and supporting components
- 2-wire serial interface for output margining, tuning, and ramping with programmable slew rates and sequencing delay times
- Readable input and output currents and voltages, output power, temperatures, uptime, and peak values
- Support for parallel and current sharing of multiple modules
- All 7-bit slave addresses supported
- Drop-in pin-compatible with dual 13A LTM4676A and dual 18A LTM4677
Applications
- Dual, fast analog loops with digital interface for control and monitoring
- High-current power management in data centers, cloud computing, and telecommunications
- Advanced industrial and medical equipment requiring precise power regulation
- High-performance computing and storage systems
- Automotive and aerospace systems needing robust and reliable power management
Q & A
- What is the input voltage range of the LTM4675IY?
The input voltage range is from 4.5V to 17V.
- What are the output voltage and current capabilities of the LTM4675IY?
The output voltage range is from 0.5V to 5.5V, and it can deliver up to 9A per channel or 18A in a single-channel configuration.
- What is the turn-on time of the LTM4675IY?
The turn-on time is 40ms.
- Does the LTM4675IY support remote configuration and monitoring?
Yes, it supports remote configurability and telemetry-monitoring via PMBus.
- What type of interface does the LTM4675IY use for communication?
The LTM4675IY uses a 2-wire serial interface based on the PMBus protocol.
- Can multiple LTM4675IY modules be used in parallel?
Yes, the LTM4675IY supports parallel and current sharing of multiple modules.
- What is the operating temperature range of the LTM4675IY?
The operating temperature range is from -40°C to 125°C.
- Is the LTM4675IY compatible with other modules from Analog Devices?
Yes, it is drop-in pin-compatible with the dual 13A LTM4676A and dual 18A LTM4677.
- What tools are available for configuring and monitoring the LTM4675IY?
The LTpowerPlay GUI and DC1613 USB-to-PMBus converter and demo kits are available for configuration and monitoring.
- What is the package type and dimensions of the LTM4675IY?
The LTM4675IY is offered in a 16mm × 11.9mm × 3.51mm BGA package.
