LT3845AMPFE#TRPBF

$13.39

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

SKU:8b91e5fc8e49 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR BUCK 16TSSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Output Type：Transistor Driver
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：4V ~ 60V
Frequency - Switching：300kHz
Duty Cycle (Max)：-
Synchronous Rectifier：Yes
Clock Sync：Yes
Serial Interfaces：-
Control Features：Enable, Frequency Control, Soft Start
Operating Temperature：-55°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
Grade：-
Qualification：-

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LT3845AMPFE#TRPBF

Overview

The LT3845AMPFE#TRPBF is a high voltage synchronous current mode step-down controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 60V and supports adjustable switching frequencies from 100kHz to 500kHz, with synchronization capability up to 600kHz. The device features a quiescent current of 120uA and delivers output voltages up to 36V. Packaged in a 16-lead TSSOP, it is designed for medium to high power applications requiring high efficiency.

Feature Summary

Synchronous current mode control architecture for high efficiency
Adjustable operating frequency with external synchronization support
Onboard regulator simplifies biasing requirements directly from VIN
Programmable soft-start controls output voltage slew rate

Applications

Industrial control systems
Telecom power supplies
Distributed power architectures
High voltage step-down conversion

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing components. Confirm that the AMP variant meets the required temperature and performance specifications for your design. Ensure compatibility with the DC1619A demonstration board if reference design validation is necessary. Check current availability status as supply conditions may vary.

Selection Notes

Select this controller for applications requiring wide input voltage ranges up to 60V. Consider the adjustable frequency feature for optimizing transformer size or EMI performance. The synchronous rectification capability improves efficiency at higher loads. Evaluate the need for synchronization if multiple converters operate in parallel.

Part Context

This component belongs to the LT3845 family of high voltage synchronous buck controllers. It shares architectural similarities with other devices in the series but offers specific pinout and performance characteristics tailored for robust industrial and telecom environments. The part is distinct from non-synchronous or lower voltage variants.