Manufacturer Part Number

LTC3412AEFE#PBF

Description

3A buck step-down switching regulator IC with adjustable output voltage. Positive output, single channel. Suitable for surface mount applications. Delivers output voltage from 0.8V to 5V with up to 3A output current. Integrated synchronous rectifier for efficient power conversion. Housed in a 16-lead TSSOP package with exposed pad for enhanced thermal management. RoHS3 compliant and REACH unaffected for global environmental compliance.

Specifications

Input voltage range: 2.25V to 5.5V

Output voltage adjustable: 0.8V to 5V

Output current max: 3A

Switching frequency: 300kHz to 4MHz

Package: 16-TSSOP (0.173" x 4.40mm), Exposed Pad

Synchronous rectification: Yes

Number of outputs: 1

Operating temperature: -40°C to +125°C junction

Moisture Sensitivity Level: MSL 1 (unlimited)

RoHS3 compliant

Device Structure

Single channel synchronous buck converter IC

Monolithic design integrating MOSFETs for high efficiency

Thermal pad on package for improved heat dissipation

Compact surface mount 16-TSSOP package with exposed pad

Performance Characteristics

High conversion efficiency due to synchronous rectification

Stable output voltage with wide adjustable range

Fast transient response and low dropout

Wide switching frequency range supports flexible design

Reliable operation over extended temperature range

Compact package allows for dense board layouts

Application Environments

Point-of-load regulation in digital systems

FPGA, ASIC, microprocessor power supply

Industrial and communications equipment

Portable and embedded electronics

General low voltage DC-DC power conversion

Ideal for systems operating within 2.25V to 5.5V input rail and needing up to 3A output

Selection Guidelines

Choose this model when space and thermal management are a priority

Fits applications needing adjustable voltage output up to 3A

Suitable for designs requiring ROHS3 and REACH compliance

Ensure input and output voltage requirements are within specified range

Check switching frequency and efficiency requirements against application needs

Ideal for surface mount designs needing compact power management solutions

Usage Considerations

Verify input source can provide stable voltage within 2.25V-5.5V

Adjust output voltage resistors as needed for desired output

Ensure proper layout for thermal pad and heat dissipation

Check total power dissipation for ambient operating conditions

Confirm compatibility with system EMI and switching frequency constraints

Review manufacturer’s datasheet for recommended PCB layout and external components

Minimize lead inductance and ensure solid ground connection for best performance

Do not exceed maximum ratings for input voltage and output current

Potential Equivalent/Replacement Models

Equivalent or alternative models may be available from Analog Devices or other power IC vendors, but always check pin compatibility, package, and performance before substitution.

Analog Devices: LTC3412EFE, LTC3412BFE, LTC3413 series (verify specs and footprint)

Texas Instruments: TPS5430, TPS5420, TPS5410 (review voltage/current/package details)

Maxim Integrated: MAX16910, MAX1518 (check output specs and package compatibility)

Linear Technology/AD: LTC3411 (lower current, check suitability)

If no suitable direct replacement found, contact Ariat-Tech sales team for model selection help and up-to-date cross-reference information.

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