LT1931IS5#TRPBF

$6.77

Description：IC REG CUK ADJ 1A TSOT23-5
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:0cf2bbbc9221 Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CUK ADJ 1A TSOT23-5
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Function：Step-Up/Step-Down
Output Configuration：Negative
Topology：Cuk
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：2.45V
Voltage - Input (Max)：16V
Voltage - Output (Min/Fixed)：-1.255V
Voltage - Output (Max)：-34V
Current - Output：1A (Switch)
Frequency - Switching：1.2MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：SOT-23-5 Thin, TSOT-23-5
Supplier Device Package：TSOT-23-5

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LT1931IS5#TRPBF

Overview

The LT1931IS5#TRPBF is a Cuk switching regulator IC manufactured by Analog Devices Inc. It operates within an input voltage range of 2.45V to 16V and provides a negative, adjustable output voltage from -1.255V to -34V. The device supports a maximum switch current of 1A with a fixed switching frequency of 1.2MHz. Packaged in a TSOT-23-5 surface-mount case, it functions as a step-up/step-down converter designed for applications requiring negative voltage generation.

Feature Summary

Implements Cuk topology to generate negative output voltages from positive input sources
Provides adjustable negative output regulation across a wide voltage range
Integrates a high-frequency 1.2MHz switching controller for compact passive component sizing

Applications

Negative bias supply generation for operational amplifiers
Power management for mixed-signal integrated circuits
Telecommunications interface circuitry requiring dual polarity rails

Procurement Notes

Verify the specific suffix IS5 against datasheet documentation to confirm temperature grade and package variant. Confirm RoHS compliance status through official manufacturer declarations. Ensure ordering quantities match available packaging formats such as cut tape or reel options provided by distributors.

Selection Notes

Select this component when a negative voltage rail is required from a single positive source without using inverting topologies that may complicate ground referencing. The Cuk architecture offers continuous input and output currents, which reduces input and output ripple requirements compared to other converters.

Part Context

This part belongs to the LT1931 family of power management ICs from Analog Devices. The series focuses on providing efficient DC-DC conversion solutions in small packages. The IS5 designation indicates industrial temperature range performance and the TSOT-23-5 physical footprint.