LT3150CGN#PBF

Overview

The LT3150CGN#PBF is a linear regulator controller in a 16-lead SSOP package. It drives an external N-channel MOSFET to achieve very low dropout voltage and fast transient response. The device includes a fixed frequency 1.4MHz boost converter for gate drive generation. Electrical specifications include a VIN1 operating range of 1.1V to 10V, a precision 1.21V reference with –1% tolerance over temperature, and a current limit threshold of 50mV.

Feature Summary

• Integrates a fixed frequency 1.4MHz internally compensated boost converter to generate gate drive for the external N-channel MOSFET.
• Features a multifunction shutdown pin that provides programmable current limit time-out latchoff, overvoltage protection, or thermal shutdown capabilities.
• Utilizes high-side current sensing via IPOS and INEG pins to set active current limiting thresholds using an external sense resistor.
• Optimized for ultrafast transient load response when used with ceramic output capacitors, eliminating the need for bulk electrolytic capacitance.

Applications

• Microprocessor core supplies
• ASIC power supplies
• I/O supply rails
• Logic termination supplies

Procurement Notes

Verify the specific ordering suffix matches the required package and temperature grade. Confirm the component is sourced from authorized distribution channels to ensure authenticity. Review the manufacturer datasheet for absolute maximum ratings and thermal dissipation requirements before finalizing procurement plans.

Selection Notes

Select this controller for applications requiring low input-to-output voltage conversion and high-speed transient response. Ensure the external N-channel MOSFET selected has a sufficiently low RDS(ON) to meet dropout voltage targets. Verify that the system can accommodate the required ceramic output capacitance for optimal loop stability.

Part Context

This component belongs to the LT3150 family of low dropout linear regulator controllers manufactured by Analog Devices Inc. It is designed to replace traditional monolithic regulators or PNP-based solutions where low dropout and fast transient performance are critical constraints.

Replacement Considerations

LT3150CGN#TRPBF