LT1578CS8-2.5#TRPBF

$4.22

Description：IC REG BUCK 2.5V 1.5A 8SO
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:a606814e1a27 Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK 2.5V 1.5A 8SO
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Fixed
Number of Outputs：1
Voltage - Input (Min)：4V
Voltage - Input (Max)：15V
Voltage - Output (Min/Fixed)：2.5V
Voltage - Output (Max)：-
Current - Output：1.5A
Frequency - Switching：200kHz
Synchronous Rectifier：No
Operating Temperature：0°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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LT1578CS8-2.5#TRPBF

Overview

The LT1578CS8-2.5#TRPBF is a monolithic buck mode switching regulator manufactured by Analog Devices Inc., housed in an 8-pin SOIC package. It operates at a fixed frequency of 200kHz and integrates a 1.5A internal power switch along with oscillator, control, and logic circuitry. The device utilizes current-mode topology to ensure fast transient response and stable loop performance. It accepts an input voltage range from 4V to 15V and provides a fixed output voltage of 2.5V. The maximum continuous output current capability is specified at 1.25A.

Feature Summary

Integrates a 1.5A power switch and complete control logic within a single monolithic die
Employs current-mode control topology for rapid transient response and robust loop stability
Operates at a fixed 200kHz switching frequency to optimize external component size

Applications

3.3V or 2.5V step-down converter circuits
Battery-powered portable equipment power supplies
General-purpose DC-to-DC conversion modules

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the CS8 designation corresponds to the commercial temperature grade range. Ensure compatibility with standard surface-mount assembly processes for the SOIC-8 footprint. Cross-reference the manufacturer's latest datasheet for any updates regarding pinout configurations or recommended external passive component values.

Selection Notes

Select this component for designs requiring a compact solution with integrated high-current switching capabilities. The fixed 200kHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the 4V minimum input voltage constraint when designing for battery applications. The current-mode architecture simplifies compensation network design while maintaining stability under varying load conditions.

Part Context

This part belongs to the LT1578 family of synchronous step-down regulators. It shares the same core architecture as variants offering different output voltages, such as the 3.3V version. The device represents a cost-effective solution for medium-current applications where board space is limited. It complements Analog Devices' portfolio of high-efficiency power management integrated circuits.