LT1931ES5#TRMPBF

Overview

The LT1931ES5#TRMPBF is a Cuk switching regulator IC manufactured by Analog Devices Inc., designed for negative output configurations. It operates within an input voltage range of 2.45V to 16V and provides an adjustable negative output from -1.255V to -34V. The device supports a maximum switch current of 1A and functions at a fixed switching frequency of 1.2MHz. Packaged in a TSOT-23-5 surface-mount case, it is rated for operation between 0°C and 70°C ambient temperature.

Feature Summary

• Implements Cuk topology to provide negative voltage regulation with continuous input and output currents.

Applications

• Negative power supply generation for analog circuits
• Biasing requirements for operational amplifiers
• Power management in portable devices requiring inverted rails

Procurement Notes

Verify the specific suffix #TRMPBF indicates tape-and-reel packaging when ordering. Confirm that the application requires a negative output configuration, as this component is specialized for Cuk topology inversion. Ensure input voltage constraints remain within the specified 2.45V to 16V range to maintain proper regulation and avoid damage to the internal switching elements.

Selection Notes

Select this component when a compact solution for generating negative voltages from a single positive rail is required. The TSOT-23-5 package suits space-constrained designs. Consider the 1A switch current limit for load requirements. This part is suitable where low quiescent current and small external component count are priorities compared to traditional inverting topologies.

Part Context

This part belongs to the LT1931 family of DC-DC converters. It shares the same basic product number with variants like the LT1930, which offers boost or buck-boost capabilities. The ES5 designation refers to the specific TSOT-23-5 package type used for surface mounting. The manufacturer is Analog Devices Inc., formerly Linear Technology.

Replacement Considerations

LT1930ES5#TRPBF