LT1578IS8#TRPBF

$4.82

Description：IC REG BUCK ADJ 1.5A 8SO
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:f6f4c8ea200e Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 1.5A 8SO
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4V
Voltage - Input (Max)：15V
Voltage - Output (Min/Fixed)：1.21V
Voltage - Output (Max)：14.1V
Current - Output：1.5A
Frequency - Switching：200kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SO

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LT1578IS8#TRPBF

Overview

The LT1578IS8#TRPBF is a monolithic switching regulator from Analog Devices, available in SOIC-8 packaging. It integrates a 1.5A power switch with oscillator, control, and logic circuitry. The device operates at a fixed 200kHz frequency and supports both SEPIC and Buck topologies for DC-to-DC conversion. Input voltage ranges vary by configuration, typically spanning 4V to 15V or 6V to 15V. Output capabilities include adjustable voltages such as 2.5V, 3.3V, or dual outputs of ±5V, with current ratings up to 1.5A. The current-mode topology ensures fast transient response and loop stability.

Feature Summary

Integrates a high-current 1.5A power switch on the die alongside all necessary control and logic circuitry.
Utilizes current-mode topology to provide rapid transient response and robust loop stability.
Supports versatile SEPIC and Buck operating modes within a single monolithic package.

Applications

Dual output SEPIC converter circuits
3.3V step-down (Buck) converter designs
General DC-to-DC power regulation systems

Procurement Notes

Verify the specific suffix against official documentation to confirm the exact operational mode and pinout configuration. Ensure compatibility with required input voltage ranges and thermal management strategies for the SOIC-8 package. Confirm RoHS compliance status through manufacturer datasheets before integration into final assemblies.

Selection Notes

Select this component when a compact solution is needed for buck or SEPIC applications requiring integrated power switching. The fixed 200kHz frequency allows for smaller passive components compared to lower-frequency regulators. Evaluate thermal performance requirements given the integrated 1.5A switch capability in an 8-pin surface-mount package.

Part Context

This part belongs to the LT1578 series of switching regulators manufactured by Analog Devices. It is designed for efficient power conversion in space-constrained environments. The series offers flexibility through support for multiple converter topologies while maintaining high efficiency and reliability standards typical of industrial-grade power management ICs.