Overview
The LTM4677IY is a high-power density DC-DC converter module produced by Analog Devices, Inc. This µModule® regulator is designed to provide dual 18A or single 36A step-down power conversion with advanced digital power system management. It features a compact 16mm x 16mm x 5.01mm BGA144 package, making it suitable for a variety of high-power applications. The module includes fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, and inductors, all integrated within a single package to simplify design and implementation of power supply solutions.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Manufacturer | Analog Devices, Inc. | |
| Package | BGA144 | |
| Input Voltage Range | 4.5V to 16V | V |
| Output Voltage Range | 0.5V to 1.8V | V |
| Maximum Output Current | 18A (dual), 36A (single) | A |
| Switching Frequency | 225 kHz to 800 kHz | kHz |
| Operating Temperature Range | -40°C to +125°C | °C |
| Mounting Style | SMD/SMT | |
| Dimensions | 16mm x 16mm x 5.01mm | mm |
Key Features
- Remote Configurability and Telemetry: The LTM4677IY features remote configurability and telemetry-monitoring of power management parameters over PMBus, an open standard I2C-based digital interface protocol.
- Dual or Single Output: Capable of providing dual 18A or single 36A step-down power conversion.
- Fast Analog Control Loops: Includes fast analog control loops and precision mixed-signal circuitry for precise control and monitoring.
- EEPROM and Onboard ADC: Equipped with EEPROM for storing configuration data and an onboard ADC for monitoring various parameters.
- High Efficiency and Stability: Offers excellent efficiency and stability across varying operating conditions.
- Protection Features: Includes overvoltage protection (OVP), undervoltage lockout (UVLO), overtemperature protection (OTP), and short-circuit protection (SCP).
- Programmable Slew Rates and Sequencing: Allows outputs to be margined, tuned, and ramped up and down at programmable slew rates with sequencing delay times.
Applications
- Telecommunications: Powering base stations and other telecom equipment.
- Automotive: Supplying power to electric vehicles or charging systems.
- Industrial: Ensuring reliable power for machinery, automation, and control systems.
- Medical: Providing stable power for medical devices such as MRI machines or patient monitors.
- Datacom and Storage Systems: Powering data communication and storage systems.
Q & A
- What is the input voltage range of the LTM4677IY?
The input voltage range is from 4.5V to 16V.
- What are the output voltage and current capabilities of the LTM4677IY?
The output voltage range is from 0.5V to 1.8V, and it can provide up to 18A per output channel or a single 36A output.
- What is the switching frequency of the LTM4677IY?
The switching frequency ranges from 225 kHz to 800 kHz.
- What is the operating temperature range of the LTM4677IY?
The operating temperature range is from -40°C to +125°C.
- Does the LTM4677IY support remote configurability and telemetry?
Yes, it supports remote configurability and telemetry-monitoring over PMBus.
- What protection features does the LTM4677IY include?
It includes overvoltage protection (OVP), undervoltage lockout (UVLO), overtemperature protection (OTP), and short-circuit protection (SCP).
- What is the package type and dimensions of the LTM4677IY?
The package type is BGA144, and the dimensions are 16mm x 16mm x 5.01mm.
- What are some typical applications of the LTM4677IY?
Typical applications include telecommunications, automotive, industrial, medical, and datacom and storage systems.
- Does the LTM4677IY have onboard memory for configuration?
Yes, it has EEPROM for storing configuration data.
- Can the LTM4677IY be programmed for specific slew rates and sequencing?
Yes, it allows outputs to be margined, tuned, and ramped up and down at programmable slew rates with sequencing delay times.
