LT3048EDC-3.3#TRMPBF

Overview

The LT3048EDC-3.3#TRMPBF is a dual-output power management IC from Analog Devices, integrating one step-up (boost) switching regulator and one low-dropout (LDO) linear regulator in an 8-DFN package. The boost channel provides a fixed 13.1 V output at up to 300 mA, while the LDO channel delivers a fixed 3.3 V output at up to 45 mA. It operates with an input voltage range of 2.7 V to 4.8 V and features a 2.2 MHz switching frequency. The device supports shutdown functionality and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-current boost converter and a precision LDO in a single compact package
• Provides independent regulated outputs for biasing mixed-signal circuits
• Features a fixed 2.2 MHz switching frequency for optimized passive component size
• Includes a shutdown pin for system power management

Applications

• Bias generation for portable instrumentation requiring multiple voltage rails
• Power supply stages for microcontrollers needing isolated analog and digital supplies
• Battery-powered systems requiring efficient step-up conversion alongside stable linear regulation

Procurement Notes

Verify the specific suffix (#TRMPBF) to confirm tape-and-reel packaging and lead-free status. Ensure compatibility with the required thermal pad soldering profile for the 8-DFN package. Cross-reference the manufacturer's latest datasheet for any updates on RoHS compliance or material declarations before finalizing procurement orders.

Selection Notes

Select this component when a design requires both a boosted voltage rail and a precise low-noise linear rail from a single low-voltage source. The fixed output voltages simplify external component selection but limit flexibility compared to adjustable variants. Consider the 300 mA boost current capability against the load requirements of the primary circuit.

Part Context

This part belongs to the LT3048 series, which combines switching and linear regulation technologies. The 'EDC' designation indicates the specific 8-DFN (2x2 mm) package variant. The '#TRMPBF' suffix denotes the tape-and-reel packaging format and lead-free construction, distinguishing it from bulk or non-lead-free versions.

Replacement Considerations

Direct substitutes include other LT3048 variants with different fixed output voltages, such as LT3048EDC-12#TRMPBF or LT3048IDC-15#TRPBF, provided the output voltage requirements match the application needs. Verify pinout and thermal characteristics remain identical when substituting.