LT3505EDD#TRPBF

$7.15

Description：IC REG BUCK ADJ 1.2A 8DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:b30db0f9aba2 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：Tape & Reel (TR),Cut Tape (CT)
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#TRPBF

Overview

The LT3505EDD#TRPBF 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 up to 40V maximum. The device delivers a maximum output current of 1.2A with an adjustable output voltage from 0.78V to 33.84V. Switching frequency is resistor-programmable between 200kHz and 3MHz. It includes cycle-by-cycle current limit, soft-start, and low shutdown current (<2µA). Packaged in a thermally enhanced 8-pin DFN EP (3mm x 3mm) for surface mount applications.

Feature Summary

Integrates a 1.4A power switch within a compact 3mm x 3mm DFN package
Supports wide input voltage ranges suitable for automotive and industrial sources
Features programmable switching frequency to optimize external component size or efficiency
Includes cycle-by-cycle current limiting and soft-start functionality

Applications

Automotive battery regulation
Industrial supply conversion
Unregulated wall transformer regulation

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the EDD designation corresponds to the 8-pin DFN EP package type. Ensure compatibility with the required thermal pad soldering process for the exposed pad design. Check for RoHS compliance status as indicated in official documentation.

Selection Notes

Select this component when a high-current buck converter is needed in a minimal footprint. The wide input range accommodates various source voltages without additional pre-regulation. The programmable frequency allows designers to balance between component size and switching losses based on specific application requirements.

Part Context

This part belongs to the LT3505 family of monolithic step-down regulators manufactured by Analog Devices Inc. It is designed for applications requiring robust performance in space-constrained environments. The device integrates protection features typical of modern switching regulators while maintaining simplicity in external circuitry requirements.