LT1931AES5#TRMPBF

$5.19

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

SKU:9128d2dee4ce 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：2.2MHz
Synchronous Rectifier：No
Operating Temperature：0°C ~ 70°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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LT1931AES5#TRMPBF

Overview

The LT1931AES5#TRMPBF is a negative Cuk switching regulator IC manufactured by Analog Devices Inc. It operates within an input voltage range of 2.45V to 16V and provides an adjustable negative output voltage from -1.255V to -34V. The device supports a maximum switch current of 1A and utilizes a fixed switching frequency of 2.2MHz. Packaged in a TSOT-23-5 surface-mount case, it is designed for applications requiring efficient step-up or step-down conversion with inverted polarity.

Feature Summary

Implements Cuk topology to provide simultaneous step-up and step-down capabilities with negative output inversion
Integrates a high-voltage internal power switch rated for 36V drain-source breakdown
Features a fixed 2.2MHz switching frequency to minimize external passive component size

Applications

Portable battery-powered equipment requiring negative rail generation
Industrial control systems needing isolated or non-isolated negative supply rails
Communication modules utilizing single-supply operation with negative bias requirements

Procurement Notes

Verify the specific suffix '#TRMPBF' confirms tape-and-reel packaging and lead-free compliance. Confirm the 'AE' grade indicates extended temperature performance if required. Ensure the ordering part number matches the exact pinout and electrical specifications of the datasheet revision used during design. Cross-reference manufacturer documentation for RoHS status and material declarations prior to final procurement.

Selection Notes

Select this component when a compact solution for generating negative voltages from a positive source is required. The Cuk topology allows input and output currents to be continuous, reducing ripple. Consider the 2.2MHz frequency for smaller inductors compared to lower-frequency alternatives. Evaluate thermal dissipation in the TSOT-23-5 package based on the expected load current and ambient temperature conditions.

Part Context

This part belongs to the LT1931 family of DC/DC converters. It shares the same core architecture as the LT1931ES5 but may differ in manufacturing lot or specific grading parameters defined by the manufacturer. The family is characterized by its ability to operate in boost, buck, or Cuk modes within a minimal footprint.