LTC1539CGW#PBF

DC DC Switching Controllers Overview

The LTC1539CGW#PBF is a multi-output synchronous step-down switching regulator controller from Analog Devices. It drives external N-channel power MOSFETs within a phase-lockable fixed frequency architecture, supporting up to four independent outputs. The device operates with an input voltage range of 5.2V to 28V and supports output voltages including 2.9V, 3.3V, 5V, and 12V. Maximum output currents are specified as 3A for 5V and 3.3V rails, 2.6A for the 2.9V rail, 200mA for 12V, and 20mA for standby applications. Switching frequency reaches up to 400kHz with a maximum duty cycle of 99%.

DC DC Switching Controllers Feature Summary

• Multi-output synchronous buck controller architecture
• Phase-lockable fixed frequency operation
• External N-channel MOSFET drive capability

DC DC Switching Controllers Applications

• Notebook computer power supplies
• Multi-rail DC-DC conversion systems
• Low noise power distribution networks

DC DC Switching Controllers Procurement Notes

Verify the complete ordering part number, specifically the suffix #PBF, to confirm lead-free compliance and package type. Ensure the specific variant matches the required thermal and electrical specifications for the target application environment.

DC DC Switching Controllers Selection Notes

Select this component when designing systems requiring multiple regulated DC outputs from a single controller. It is suitable for applications needing high efficiency and low noise across various voltage rails, such as portable computing devices.

DC DC Switching Controllers Part Context

This part belongs to the LTC1539 series of switching regulators. It functions as a controller rather than an integrated power stage, requiring external MOSFETs. The CGW designation indicates the specific package and temperature grade provided by Analog Devices.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.