LT3570EUF#TRPBF

Overview

The LT3570EUF#TRPBF is a synchronous step-down and step-up DC-to-DC converter featuring an integrated LDO controller. It operates with an input voltage range of 2.5V to 36V and provides three regulated outputs: two buck channels and one boost channel, each capable of delivering up to 1.5A. The device includes an internal low-dropout regulator (LDO) for auxiliary power. It supports switching frequencies up to 2.75MHz and functions within a temperature range of -40°C to +125°C. Packaged in a 24-pin QFN exposed pad, it integrates internal power switches for compact design.

Feature Summary

• Integrates synchronous buck and boost converters with internal power switches
• Includes dedicated LDO controller for auxiliary supply generation
• Supports high-frequency operation up to 2.75MHz for reduced component size

Applications

• Portable electronic devices requiring multiple voltage rails
• Industrial control systems needing isolated or mixed-signal power
• Battery-powered equipment utilizing buck-boost topologies

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the manufacturer part number matches Analog Devices Inc. specifications exactly. Ensure compatibility with required thermal management solutions due to the exposed pad package type. Cross-reference datasheet revisions to confirm pinout consistency.

Selection Notes

Select this component when designing systems requiring simultaneous buck and boost regulation from a single input source. Consider the 1.5A current limit per channel against peak load requirements. Evaluate the 2.75MHz switching frequency impact on passive component selection and EMI performance. Verify input voltage stability falls within the 2.5V to 36V operational window.

Part Context

This part belongs to the LT3570 family of mixed-mode power management ICs. It combines traditional switching regulators with linear regulation capabilities in a single package. The series is designed for applications demanding high efficiency and minimal external component count. It serves as a solution for complex power distribution networks in space-constrained environments.

Replacement Considerations

Check for direct cross-reference models offering identical pinouts and electrical characteristics. Verify that alternative components support the same 2.5V to 36V input range and 1.5A output capability. Ensure thermal resistance values are comparable to maintain junction temperature limits.