LTC1438CG#PBF

DC DC Switching Controllers Overview

The LTC1438CG#PBF is a dual, high-efficiency, low-noise synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates in a phase-lockable fixed frequency architecture to drive external N-channel power MOSFETs. The device accepts an input voltage range of 3.5 V to 36 V and provides two independent outputs adjustable from 1.19 V to 9 V. It supports a maximum switching frequency of 400 kHz with a typical operating current of 320 uA. Designed for surface mount installation in a 28-lead SSOP package, it functions within a temperature range of 0°C to +70°C.

DC DC Switching Controllers Feature Summary

• Dual synchronous buck topology for independent channel control
• Phase-lockable fixed frequency operation up to 400 kHz
• Integrated low-noise architecture for sensitive applications
• Supports external N-channel MOSFET driving

DC DC Switching Controllers Applications

• Portable equipment requiring multiple regulated rails
• Industrial control systems with noise-sensitive loads
• Battery-powered devices needing efficient step-down conversion
• Communication infrastructure power management

DC DC Switching Controllers Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required thermal grade and packaging format. Request original manufacturer documentation to validate lot traceability and RoHS compliance status before integration into production schedules.

DC DC Switching Controllers Selection Notes

Select this controller when dual isolated or synchronized buck outputs are required from a single IC. Ensure external MOSFETs support the target current and voltage ratings. Verify that the application environment remains within the specified commercial temperature limits. Consider the 28-SSOP footprint constraints during PCB layout planning.

DC DC Switching Controllers Part Context

This component belongs to the LTC1438 family of dual synchronous buck controllers. It shares architectural similarities with the LTC1438IG variant but differs in industrial-grade temperature specifications. The series emphasizes efficiency and noise reduction for precision analog circuits.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitutes include the LTC1438IG#PBF for extended temperature ranges and the LTC1438CG-ADJ#PBF for adjustable output configurations. Verify pin compatibility and thermal performance before substitution.