LTC3256EMSE#TRPBF

Overview

The LTC3256EMSE#TRPBF is a dual-output power management integrated circuit designed for automotive applications. It integrates a step-down charge pump and a low-dropout regulator (LDO) to provide two independent non-isolated outputs. The device operates with an input voltage range of 5.5V to 38V, supporting a total output current of 350mA across its channels. Specifically, it delivers up to 100mA at 5V and 250mA at 3.3V. The component is engineered for high diagnostic coverage in ISO 26262 systems and features an integrated watchdog timer. It utilizes a 16-MSOP-EP package.

Feature Summary

• Integrates a buck charge pump and LDO for efficient dual-output power generation
• Designed for high diagnostic coverage compliant with ISO 26262 automotive standards
• Includes an integrated watchdog timer for system monitoring
• Reduces power dissipation compared to discrete linear regulator solutions

Applications

• Automotive electronic control units requiring robust power management
• Systems demanding high functional safety and diagnostic coverage
• Applications utilizing 12V battery architectures with wide input voltage variations
• Embedded designs needing combined switching and linear regulation in a compact footprint

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the device meets the required automotive grade specifications for your application environment. Cross-reference the manufacturer's latest documentation to ensure compliance with any recent product change notices or material declarations. Ensure the supplier provides valid traceability for automotive-grade parts.

Selection Notes

Select this component when a single IC solution is preferred over separate regulators to save board space. It is suitable for designs where input voltages fluctuate significantly between 5.5V and 38V. Consider this part if the application requires built-in fault monitoring via the watchdog feature. Evaluate the thermal performance requirements given the 350mA total output capability in the MSOP-EP package.

Part Context

This part belongs to the LTC3256 family of dual-output power management devices from Analog Devices. It is specifically tailored for automotive environments, offering a combination of switching efficiency and linear regulation stability. The device complements other automotive PMICs by providing a compact solution for generating multiple voltage rails from a single high-voltage source.

Replacement Considerations

Direct substitutes include the LTC3256EMSE#PBF for tube packaging and the LTC3256HMSE#TRPBF for higher temperature grade variants. Verify pin compatibility and electrical specifications before swapping packages or temperature grades.