LT1977IFE#PBF

$12.48

Description：IC REG BUCK ADJ 1.5A 16TSSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:ef294c38507d 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 16TSSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：3V
Voltage - Input (Max)：60V
Voltage - Output (Min/Fixed)：1.25V
Voltage - Output (Max)：55.2V
Current - Output：1.5A (Switch)
Frequency - Switching：500kHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：16-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package：16-TSSOP-EP

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LT1977IFE#PBF

Overview

The LT1977IFE#PBF is a monolithic step-down switching regulator IC manufactured by Analog Devices Inc. It operates with an input voltage range of 3V to 60V and provides a positive adjustable output from 1.25V to 55.2V. The device delivers up to 1.5A of switch current at a fixed 500kHz switching frequency. It utilizes a 16-lead TSSOP package with an exposed thermal pad for surface mount installation. The component supports a junction temperature range of -40°C to 125°C and includes internal compensation for stable operation.

Feature Summary

Integrated high-voltage power switch capable of handling wide input voltage ranges
Fixed-frequency current mode architecture for rapid transient response
Internal frequency compensation eliminates the need for external phase lead components
Thermal shutdown protection safeguards against overheating conditions

Applications

Industrial point-of-load regulation
Battery-powered equipment power management
Distributed power supply architectures
High-voltage step-down conversion systems

Procurement Notes

Verify the specific suffix #PBF indicates lead-free RoHS compliance before ordering. Confirm the 16-TSSOP package availability matches your assembly requirements. Check manufacturer notices for any recent design changes or lifecycle status updates that may affect long-term supply continuity.

Selection Notes

Select this part when a non-synchronous buck converter is required for inputs up to 60V. Ensure the load current does not exceed the 1.5A switch limit. Consider the 500kHz frequency for balancing efficiency and passive component size. Verify thermal performance requirements for the TSSOP-EP package in your specific enclosure environment.

Part Context

This component belongs to the LT1977 family of high-voltage step-down regulators. It serves as a robust solution for converting higher bus voltages to lower logic or analog supply levels. The device complements other Analog Devices PMICs by offering a simple, single-output topology without requiring external feedback resistors for basic configurations.