LTC1438CG#TRPBF

DC DC Switching Controllers Overview

The LTC1438CG#TRPBF is a dual high-efficiency, low-noise synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates within an input voltage range of 3.5 V to 36 V and provides two independent adjustable output channels ranging from 1.19 V to 9 V. The device supports a maximum output current of 20 mA per channel with a fixed switching frequency of 125 kHz. It features 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-lead SSOP package and functions reliably across an operating temperature range of 0°C to +70°C.

DC DC Switching Controllers Feature Summary

• Integrates two independent synchronous buck regulators in a single compact package
• Optimized for high efficiency and low noise performance in power-sensitive applications
• Includes shutdown capability to minimize power consumption during idle states

DC DC Switching Controllers Applications

• Portable battery-powered equipment requiring multiple regulated voltage rails
• Industrial control systems utilizing standard logic levels
• Communication infrastructure powering mixed-signal circuits

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF confirms tape-and-reel packaging when sourcing components. Confirm that the CG variant meets the required commercial temperature specifications for your design environment. Ensure compatibility with the 28-SSOP footprint during PCB layout finalization. Cross-reference the manufacturer's latest datasheet for any recent product change notifications or material declarations before placing orders.

DC DC Switching Controllers Selection Notes

Select this component when designing systems requiring two isolated low-current DC-DC outputs from a higher voltage bus. It is suitable for applications where board space is limited but efficiency is critical. Consider the 125 kHz switching frequency for EMI management and filter size trade-offs. Evaluate the 320 uA quiescent current against system standby requirements to ensure adequate battery life or thermal performance.

DC DC Switching Controllers Part Context

This part belongs to the LTC1438 family of dual synchronous buck regulators. It shares architectural similarities with the LTC1438IG-ADJ#PBF but differs in packaging and temperature rating. The series is designed to replace older linear regulators or discrete solutions in multi-rail power architectures. It complements other Analog Devices PMICs by providing efficient step-down conversion for digital logic and analog peripherals.

DC DC Switching Controllers Replacement Considerations

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