LTC1438CG-ADJ#PBF

DC DC Switching Controllers Overview

The LTC1438CG-ADJ#PBF is a dual high-efficiency, low-noise synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.5 V to 36 V and provides two adjustable output voltages between 1.19 V and 9 V. The device supports up to 20 mA output current per channel with a fixed switching frequency of 125 kHz. It features a shutdown mode with a quiescent supply current of 320 uA and maintains a load regulation of 0.5%. Designed for surface mount installation, it is housed in a 28-SSOP package and functions within an operating temperature range of 0°C to +70°C.

DC DC Switching Controllers Feature Summary

• Dual-channel synchronous buck topology for independent power rail generation
• Integrated low-noise architecture suitable for sensitive analog circuits
• Includes shutdown control, soft-start, and power-on reset functionalities

DC DC Switching Controllers Applications

• Portable battery-powered equipment requiring multiple regulated rails
• Industrial control systems with noise-sensitive signal processing
• Communication infrastructure powering mixed-signal components

DC DC Switching Controllers Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required package and temperature grade. Request original manufacturer documentation to validate RoHS compliance and traceability. Ensure storage conditions meet moisture sensitivity level requirements before assembly.

DC DC Switching Controllers Selection Notes

Select this component when dual isolated outputs are needed from a single input source. Compare against the LTC1438XCG variant if fixed voltage options are preferred over adjustable outputs. Evaluate thermal performance based on the SSOP package limitations for higher current loads. Consider the 125 kHz switching frequency for EMI constraints relative to other family members.

DC DC Switching Controllers Part Context

This part belongs to the LTC1438 series of dual synchronous step-down regulators. It shares architectural similarities with the LTC1438IG-ADJ but differs in specified operating temperature ranges and industrial qualification standards. The series is designed to replace older linear regulators in space-constrained applications requiring improved efficiency.

DC DC Switching Controllers Replacement Considerations

The LTC1438XCG#PBF serves as a functional alternative within the same product family. Verify pin compatibility and electrical parameter alignment before substitution.