LT1767EMS8E-3.3#TRPBF

Overview

The LT1767EMS8E-3.3#TRPBF is a monolithic step-down switching regulator manufactured by Analog Devices Inc., designed for high-frequency DC-to-DC conversion applications. This component operates with an input voltage range of 3V to 25V and provides a fixed output voltage of 3.3V. It delivers a maximum output current of 1.5A through an integrated high-efficiency power switch. The device utilizes a fixed switching frequency of 1.25MHz, enabling the use of small external components while maintaining stable performance under varying load conditions. It features current mode control architecture for rapid transient response and robust loop stability. The unit is housed in an 8-pin MSOP package with an exposed pad for thermal management and supports operation across a temperature range from -40°C to +125°C.

Feature Summary

• Integrates a high-efficiency 1.5A power switch within a compact monolithic design
• Employs current mode control architecture to ensure fast transient response and excellent loop stability
• Operates at a fixed 1.25MHz switching frequency to minimize external passive component requirements
• Includes internal soft-start functionality to limit inrush current during startup

Applications

• Portable battery-powered equipment requiring efficient step-down regulation
• Post-regulation stages for point-of-load (POL) DC/DC conversion
• General-purpose low noise power supplies for embedded systems
• Industrial control systems operating within wide input voltage ranges

Procurement Notes

Verify that the specific suffix #TRPBF corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the part number explicitly includes the E-designator, indicating compliance with RoHS directives and halogen-free manufacturing standards. Ensure compatibility with standard surface-mount reflow soldering profiles suitable for the MSOP-EP-8 package type. Cross-reference the manufacturer's latest datasheet to confirm availability status and any potential obsolescence notices before finalizing procurement orders.

Selection Notes

Select this component when a fixed 3.3V output is required from an input source ranging between 3V and 25V. It is suitable for designs prioritizing high efficiency and compact footprint due to the 1.25MHz switching frequency. Consider this part for applications demanding fast transient response capabilities provided by current mode control. Evaluate thermal dissipation requirements based on the 1.5A output capability and the thermal performance of the exposed pad in the MSOP package.

Part Context

This component belongs to the LT1767 family of monolithic step-down switching regulators. The family shares common architectural features including high-frequency operation and integrated power switches. Variants within the series differ primarily in fixed output voltage options or adjustability. The EMS8E designation specifies the 8-lead MSOP package with an exposed thermal pad and enhanced environmental compliance.

Replacement Considerations

LT1767EMS8E-3.3#PBF