LTC4151CMS-1#PBF

Power Supply Controllers, Monitors Overview

The LTC4151CMS-1#PBF is a high-efficiency, synchronous buck controller designed for battery-powered applications. It integrates a power MOSFET and supports input voltages from 2.7V to 36V. The device features a fixed 1MHz switching frequency and offers programmable output voltage via an external resistor divider. It includes comprehensive protection mechanisms such as over-current, over-voltage, and thermal shutdown. The component operates in a compact 10-lead MSOP package, ensuring reliable performance in space-constrained designs.

Power Supply Controllers, Monitors Feature Summary

• Integrated synchronous buck architecture with internal power MOSFETs
• Wide input voltage range suitable for single-cell lithium-ion or multi-cell battery systems
• Fixed 1MHz switching frequency for optimized passive component size
• Built-in protection against over-current, over-voltage, and thermal events

Power Supply Controllers, Monitors Applications

• Portable medical devices
• Industrial handheld instruments
• Battery-operated consumer electronics

Power Supply Controllers, Monitors Procurement Notes

Verify the exact suffix '#PBF' indicates lead-free RoHS compliance. Confirm the 'CMS-1' variant matches the required fixed output voltage setting. Ensure the 10-lead MSOP package footprint aligns with your PCB layout constraints. Cross-reference the manufacturer's latest datasheet for any updated mechanical drawings or reliability data before finalizing procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when a compact, high-efficiency solution is needed for converting higher battery voltages to lower logic levels. The integrated MOSFET reduces external component count compared to non-integrated controllers. Consider the fixed 1MHz frequency trade-off between efficiency and passive size. Verify that the load current requirements fall within the device's continuous current rating capabilities.

Power Supply Controllers, Monitors Part Context

This part belongs to Analog Devices' LTC415x family of battery chargers and backup power controllers. While primarily known for charging functions, the LTC4151 also serves as a standalone DC/DC converter. It complements other parts in the portfolio by offering integrated power stages, reducing design complexity for portable systems requiring both charging and regulation capabilities.

Power Supply Controllers, Monitors Replacement Considerations

Direct replacements include other LTC415x variants with different fixed output voltages or current ratings. Check for pin-compatible alternatives from Analog Devices if package changes are acceptable. Verify that substitute parts maintain similar input voltage ranges and switching frequencies to ensure compatibility with existing passive components.