Overview
The LTM4638EY#PBF is a high-performance, 15A step-down switching mode µModule (power module) regulator produced by Analog Devices Inc. This regulator is packaged in a compact 6.25mm × 6.25mm × 5.02mm BGA package, making it ideal for space-constrained applications. The module includes the switching controller, power FETs, inductor, and support components, providing a complete power management solution. It operates over an input voltage range of 3.1V to 20V and supports an output voltage range of 0.6V to 5.5V, which can be set using a single external resistor.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3.1V to 20V |
| Output Voltage Range | 0.6V to 5.5V |
| Output Current | Up to 15A |
| Package Dimensions | 6.25mm × 6.25mm × 5.02mm BGA |
| Maximum Total DC Output Voltage Error | ±1.5% over line, load, and temperature |
| Switching Frequency | High frequency with current mode control |
| Operating Temperature Range | –40°C to 125°C |
| Protection Features | Overvoltage, overcurrent, and overtemperature protection |
Key Features
- High efficiency design delivering up to 15A continuous output current
- Selectable discontinuous mode operation and output voltage tracking for supply rail sequencing
- Current mode control with fast transient response to line and load changes
- External frequency synchronization and multiphase parallel current sharing with multiple LTM4638s
- Differential remote sensing amplifier and power good indicator
- Compact BGA package suitable for single-sided or dual-sided PCBs
Applications
The LTM4638EY#PBF is designed for a variety of applications, including:
- Telecom and datacom equipment
- Networking equipment
- Industrial equipment
- Space-constrained power management systems requiring high efficiency and reliability
Q & A
- What is the input voltage range of the LTM4638EY#PBF?
The input voltage range is 3.1V to 20V. - What is the maximum output current of the LTM4638EY#PBF?
The maximum output current is up to 15A. - How is the output voltage set on the LTM4638EY#PBF?
The output voltage is set using a single external resistor. - What are the key protection features of the LTM4638EY#PBF?
The key protection features include overvoltage, overcurrent, and overtemperature protection. - Can the LTM4638EY#PBF be used in multiphase configurations?
Yes, it supports multiphase parallel current sharing with multiple LTM4638s. - What is the operating temperature range of the LTM4638EY#PBF?
The operating temperature range is –40°C to 125°C. - What is the package type and dimensions of the LTM4638EY#PBF?
The package type is BGA, and the dimensions are 6.25mm × 6.25mm × 5.02mm. - Does the LTM4638EY#PBF support external frequency synchronization?
Yes, it supports external frequency synchronization. - What is the maximum total DC output voltage error of the LTM4638EY#PBF?
The maximum total DC output voltage error is ±1.5% over line, load, and temperature. - Is the LTM4638EY#PBF RoHS compliant?
Yes, it is available with RoHS compliant terminal finish.
