LT3505EDD#PBF

$5.72

Description：IC REG BUCK ADJ 1.2A 8DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:4421842ff527 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 1.2A 8DFN
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)：3.6V
Voltage - Input (Max)：36V
Voltage - Output (Min/Fixed)：0.78V
Voltage - Output (Max)：33.84V
Current - Output：1.2A
Frequency - Switching：200kHz ~ 3.01MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：8-WFDFN Exposed Pad
Supplier Device Package：8-DFN (3x3)

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LT3505EDD#PBF

Overview

The LT3505EDD#PBF is a current mode PWM step-down DC/DC converter featuring an internal 1.4A power switch. It operates with an input voltage range of 3.6V to 36V, supporting a maximum of 40V. The device delivers up to 1.2A output current with adjustable output voltages from 0.78V to 33.84V. It utilizes a thermally enhanced 8-pin DFN EP package.

Feature Summary

Integrates a 1.4A power switch for high-current step-down conversion
Supports wide input voltage ranges suitable for automotive and industrial sources
Features resistor-programmable switching frequency from 200kHz to 3MHz
Includes cycle-by-cycle current limit and soft-start functionality

Applications

Regulating power from unregulated wall transformers
Power management in 24V industrial supply systems
Battery-powered automotive applications

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm the manufacturer designation as Analog Devices Inc. or Linear Technology. Ensure the package type matches the 8-lead DFN EP specification for thermal performance requirements.

Selection Notes

Select this component for designs requiring a compact solution with high input voltage tolerance. The adjustable frequency allows optimization for efficiency versus component size. Verify that the required output current does not exceed the 1.2A limit under all operating conditions.

Part Context

This part belongs to the LT3505 series of synchronous buck regulators. It is designed to replace older discrete solutions by integrating the controller and power switch into a single small footprint. The DFN EP package provides superior thermal dissipation compared to standard plastic packages.