LT3048IDC-12#TRMPBF

Overview

The LT3048IDC-12#TRMPBF is a dual-output power management IC from Analog Devices, combining a boost switching regulator and an LDO linear regulator in an 8-lead DFN package. It operates with an input voltage range of 2.7 V to 4.8 V at a fixed switching frequency of 2.2 MHz. The device provides two independent outputs: Output 1 delivers 13.1 V at up to 300 mA, while Output 2 provides a fixed 12 V at up to 45 mA. Designed for industrial applications, it functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-efficiency boost converter and a low-noise LDO regulator within a single compact package
• Provides two independent regulated outputs suitable for powering mixed-signal circuits
• Features a fixed 2.2 MHz switching frequency to minimize external component size

Applications

• Industrial control systems requiring isolated or distinct bias rails
• Mixed-signal circuitry needing clean analog power alongside digital supply
• Portable instrumentation powered by single-cell lithium batteries

Procurement Notes

Verify the specific suffix #TRMPBF confirms the reel packaging format and lead-free status. Confirm the 'I' grade designation matches your required operating temperature range of -40°C to +125°C. Ensure the DC2120A or DC2258A evaluation boards are available if prototype testing is planned before final production integration.

Selection Notes

Select this part when a combined boost and LDO solution is needed to generate multiple voltages from a low input source. The IDC-12 variant is chosen specifically for its fixed 12 V secondary output. Consider the 300 mA primary current limit and 45 mA secondary limit against total system load requirements to ensure adequate headroom for transient spikes.

Part Context

This component belongs to the LT3048 series, which specializes in low noise bias generation. Unlike standard regulators, this series integrates both switching and linear stages to provide clean power for sensitive analog sections while maintaining efficiency through the boost stage. The DFN-8 package allows for space-constrained PCB layouts typical in modern portable electronics.

Replacement Considerations

LT3048EDC-12#TRMPBF offers the same electrical specifications but with extended commercial temperature limits.