LT1977EFE#TRPBF

$5.67

Description：IC REG BUCK ADJ 1.5A 16TSSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:b2ba5ef4282b 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：Tape & Reel (TR)
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：0°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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LT1977EFE#TRPBF

Overview

The LT1977EFE#TRPBF is a synchronous step-down switching regulator IC manufactured by Analog Devices Inc. It operates with an input voltage range of 3V to 60V and provides an adjustable output voltage from 1.25V to 55.2V. The device delivers a continuous switch current of 1.5A at a fixed switching frequency of 500kHz. It features a positive output configuration with a single adjustable output channel. The component is housed in a 16-TSSOP package with an exposed pad (EP) for thermal management, measuring 4.40mm in width. It supports surface mount installation and functions within a junction temperature range of -40°C to 125°C.

Feature Summary

Synchronous rectification architecture for improved efficiency
Integrated power switch capable of delivering 1.5A load current
Wide input voltage tolerance up to 60V
Adjustable output voltage regulation via external resistors

Applications

Industrial point-of-load regulation
Distributed power systems
Battery-powered equipment charging
Telecommunications infrastructure power supplies

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm RoHS compliance status matches project requirements. Ensure the 16-TSSOP-EP footprint matches the PCB layout design. Check for any recent Product Change Notifications regarding epoxy or material updates before finalizing procurement plans.

Selection Notes

Select this component for applications requiring high input voltages up to 60V with moderate current demands. The synchronous design offers better efficiency compared to non-synchronous alternatives. Consider the 16-TSSOP package size constraints and thermal dissipation needs due to the exposed pad requirement. Verify that the 500kHz switching frequency aligns with EMI and inductor size requirements.

Part Context

This part belongs to the LT1977 family of synchronous buck regulators designed for high-voltage inputs. It serves as a power management solution for converting higher bus voltages to lower logic or peripheral supply levels. The device integrates the control circuitry and power switches into a single compact package to minimize board space.