LT3640EFE#TRPBF

$4.64

Description：IC REG BUCK ADJ DL 28TSSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:6fd7beebb4e6 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 DL 28TSSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：2
Voltage - Input (Min)：2.5V
Voltage - Input (Max)：35V
Voltage - Output (Min/Fixed)：0.6V, 1.265V
Voltage - Output (Max)：33.97V
Current - Output：1.1A, 1.3A
Frequency - Switching：500kHz ~ 2MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Supplier Device Package：28-TSSOP-EP
Grade：-
Qualification：-

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LT3640EFE#TRPBF

Overview

The LT3640EFE#TRPBF is a dual monolithic buck switching regulator manufactured by Analog Devices Inc., housed in a TSSOP-EP-28 surface-mount package. It operates with an input voltage range of 4 V to 35 V and delivers up to 1.3 A per channel across two independent outputs. The device features a fixed switching frequency of 2.5 MHz, ensuring compact external component sizing. Quiescent current is specified at 275 uA. It supports an output voltage up to 33.97 V and functions within a temperature range of -40 C to +125 C.

Feature Summary

Integrates two independent synchronous buck converters for efficient dual-rail power generation.
Includes integrated power-on reset and watchdog timer circuits for system reliability.
Supports high-frequency operation to minimize passive component footprint.

Applications

Industrial control systems requiring dual regulated rails
Embedded computing platforms needing reliable power management
Automotive electronics utilizing robust PMIC solutions

Procurement Notes

Verify the suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the specific manufacturer part number matches official Analog Devices documentation to ensure authenticity. Check RoHS compliance status through authorized distributors. Validate that the TSSOP-EP-28 package type aligns with your PCB layout requirements before finalizing procurement orders.

Selection Notes

Select this component when dual isolated or non-isolated buck outputs are required from a single wide-input source. The 2.5 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Ensure thermal design accounts for the EP (exposed pad) package for adequate heat dissipation. Verify that the 1.3 A per-channel current rating meets the peak load demands of the target application circuits.

Part Context

This part belongs to the LT3640 series of dual buck regulators from Analog Devices. It complements single-output variants by providing two channels in one package. The series targets applications needing multiple voltage levels from a common bus. It shares architectural similarities with other high-efficiency buck regulators but distinguishes itself through integrated monitoring features.