LT3048IDC-5#TRPBF

Overview

The LT3048IDC-5#TRPBF is a dual-output power management IC from Analog Devices, combining a 2.2 MHz boost switching regulator with an LDO linear regulator in an 8-lead DFN package. It provides a fixed 5 V output at 45 mA and a secondary adjustable output capable of up to 300 mA. The device operates within a 2.7 V to 4.8 V input voltage range and maintains functionality across an industrial temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-frequency boost converter and a low-noise LDO regulator for efficient dual-rail generation.
• Features a single external resistor setting mechanism to configure both output voltages simultaneously.

Applications

• Biasing analog-to-digital converters requiring clean, stable supply rails.
• Powering mixed-signal circuits with separate noise-sensitive and high-current requirements.
• Portable instrumentation systems utilizing single-cell battery inputs.

Procurement Notes

Verify the specific suffix #TRPBF against official manufacturer documentation to confirm reel packaging and lead-free status. Ensure the DC grade (I) meets your operational temperature requirements. Cross-reference the datasheet revision date to validate pinout compatibility and electrical specifications before finalizing procurement orders.

Selection Notes

Select this component when space-constrained designs require two distinct regulated voltages from a single low-voltage source. The integrated topology reduces component count compared to discrete solutions. Verify that the input voltage remains within the specified window to ensure proper regulation of both the boost and LDO sections under all load conditions.

Part Context

This part belongs to the LT3048 series, designed to simplify power architecture by merging switching and linear regulation. The IDC package variant utilizes an exposed pad thermal enhancement design suitable for surface-mount assembly. It serves as a compact alternative to multi-component power boards in dense electronic assemblies.

Replacement Considerations

LT3048EDC-5#TRMPBF

FAQ

How are the output voltages configured?

Both the boost and LDO outputs are set using a single external resistor connected to the SET pin, allowing simultaneous adjustment of both rails.

What is the maximum current capability of the LDO section?

The LDO section can deliver up to 45 mA of output current.