LT3509EDE#PBF

$8.29

Description：IC REG BUCK ADJ 700MA DL 14DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:e2d097030831 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 700MA DL 14DFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：2
Voltage - Input (Min)：3.6V
Voltage - Input (Max)：36V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：34.2V
Current - Output：700mA
Frequency - Switching：260kHz ~ 2.15MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：14-WFDFN Exposed Pad
Supplier Device Package：14-DFN (4x3)

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LT3509EDE#PBF

Overview

The LT3509EDE#PBF is a dual monolithic step-down switching regulator manufactured by Analog Devices Inc. It integrates two independent high-current switches and operates from an input voltage range of 6V to 36V. The device delivers up to 700mA per channel with a typical switching frequency of 1.2MHz. Key electrical parameters include a maximum output current of 700mA, an input voltage range of 6V to 36V, and a fixed internal switching frequency of 1.2MHz. It features a 16-lead SSOP package.

Feature Summary

Dual integrated buck regulators with independent control channels
High efficiency operation via 1.2MHz fixed-frequency current mode architecture
Integrated soft-start functionality limits inrush current during startup
Comprehensive protection against overcurrent, thermal overload, and undervoltage lockout

Applications

Point-of-load regulation for digital signal processors
Power distribution networks in industrial equipment
Battery-powered systems requiring efficient DC-DC conversion
Embedded controller power supplies

Procurement Notes

Verify the specific suffix 'EDE' against the manufacturer's official datasheet to confirm pinout compatibility and temperature grade. Ensure that the lead-free status matches RoHS requirements for your assembly process. Cross-reference the exact part number with authorized distributors to avoid counterfeit components, as minor suffix variations can indicate different packaging or material specifications.

Selection Notes

Select this component when dual isolated outputs are required from a single high-voltage rail. The 1.2MHz frequency allows for smaller external inductors compared to lower-frequency alternatives. Evaluate the thermal performance based on the expected load current and ambient conditions, as the dual-channel design concentrates heat within the SSOP package. Consider the input voltage range to ensure adequate headroom for the desired output voltages.

Part Context

The LT3509 belongs to Analog Devices' family of high-voltage synchronous buck regulators. It is designed to simplify power supply designs by integrating two complete buck converters into a single compact package. This integration reduces board space and component count compared to using discrete controllers and external MOSFETs for dual-rail applications.