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TPS5450MDDAREP

IC REG BUCK ADJ 5A 8SOPWR

Part Number: TPS5450MDDAREP

Manufacturer: Texas Instruments

Category: Voltage Regulators - DC DC Switching Regulators

Package: 8-PowerSOIC (0.154", 3.90mm Width)

Datasheet:: TPS5450MDDAREP.pdf

Description: IC REG BUCK ADJ 5A 8SOPWR

Select Quantity Stock: 4,658

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

TPS5450MDDAREP Enhanced Product 5.5V to 36V Input, 5A, 500kHz Step-Down Converter

A comprehensive technical overview of the TPS5450MDDAREP, an Enhanced Product (EP) high-output-current PWM step-down converter from Texas Instruments featuring integrated 110-mΩ MOSFET and high efficiency. Covers device function, core features, electrical specifications, 8-pin HSOIC PowerPAD™ package, pin configuration, typical applications, and replacement selection guidance.

Texas Instruments 8-Pin HSOIC (DDA) with PowerPAD™ 5.5V to 36V Input

Device Classification 5A Step-Down DC-DC Converter

Part Number: TPS5450MDDAREP

Mounting Type: Surface Mount

Operating Temperature Range: -55°C to +125°C

PRODUCT OVERVIEW

What Is the TPS5450MDDAREP?

TPS5450MDDAREP is a high-output-current pulse-width modulated (PWM) step-down converter from Texas Instruments, part of the SWIFT™ family of DC/DC regulators. The device integrates a low-resistance high-side N-channel MOSFET, enabling high-efficiency power conversion with minimal external components[reference:0].

The TPS5450MDDAREP operates from a wide input voltage range of 5.5V to 36V and delivers up to 5A continuous (6A peak) output current. The output voltage is adjustable down to 1.22V with 1.5% initial accuracy[reference:1]. The device features a fixed 500kHz switching frequency, internal Type III compensation, and voltage-mode control with input voltage feed-forward for improved line regulation and transient response[reference:2][reference:3].

As an Enhanced Product (EP), the TPS5450MDDAREP supports defense, aerospace, and medical applications with controlled baseline, one assembly/test/fabrication site, extended product life cycle, extended product-change notification, and full product traceability[reference:4]. The device is qualified for automotive applications (AEC-Q100) and is available in a small, thermally enhanced 8-pin SOIC PowerPAD™ package[reference:5][reference:6].

5A Output Current Up to 5A continuous (6A peak) output current with 110-mΩ integrated high-side MOSFET for high efficiency.

Wide Input & Output Range 5.5V to 36V input voltage range with output adjustable down to 1.22V with 1.5% initial accuracy.

Enhanced Product (EP) Supports defense, aerospace, and medical applications with controlled baseline and full traceability.

DEVICE HIGHLIGHTS

Key Features and Benefits of TPS5450MDDAREP

5A Output with High Efficiency

Up to 5-A continuous (6-A peak) output current with high efficiency greater than 90%, enabled by an integrated 110-mΩ high-side MOSFET[reference:7].

Wide Input Voltage Range

Operates from 5.5V to 36V, supporting 12-V and 24-V distributed power systems and automotive applications[reference:8].

Fixed 500kHz Switching Frequency

Fixed 500-kHz switching frequency enables a small filter size, reducing external component footprint and cost[reference:9].

Comprehensive Protection Features

System protected by overcurrent limiting, overvoltage protection, thermal shutdown, and undervoltage lockout[reference:10].

Low Shutdown Supply Current

18-µA shutdown supply current via the ENA pin, making it suitable for power-sensitive applications[reference:11].

Enhanced Product (EP) for High-Reliability

Supports defense, aerospace, and medical applications with controlled baseline, single assembly/test/fabrication site, and full traceability[reference:12].

REFERENCE DATA

Technical Specifications for TPS5450MDDAREP

Part Number	TPS5450MDDAREP	Manufacturer	Texas Instruments
Device Type	5A Step-Down DC-DC Converter	Series	SWIFT™, Enhanced Product
Input Voltage Range	5.5V to 36V	Output Voltage Range	1.221V to 32.04V (Adjustable)
Output Current (Continuous)	5A	Output Current (Peak)	6A
Switching Frequency	500kHz (375-600kHz over temp)	High-Side MOSFET	110 mΩ (Typical)
Efficiency	>90%	Output Voltage Accuracy	1.5% (Initial)
Quiescent Current	18 µA (Shutdown)	Control Mode	Voltage-Mode with Input Feedforward
Compensation	Internal Type III	Minimum On-Time	220 ns (Maximum)
Current Limit	4.4A to 11.7A (Over Temperature)	Soft-Start	8 ms (Internal)
Synchronous Rectifier	No (External Catch Diode Required)	Topology	Buck (Step-Down)
Package	8-Pin HSOIC PowerPAD™ (DDA)	Package Body Size	4.90mm × 3.90mm
Mounting Type	Surface Mount	Junction Temperature	-55°C to +125°C
Storage Temperature	-65°C to +150°C	Moisture Sensitivity Level	Level-1-260C-UNLIM
ESD (HBM)	±2000V	Qualification	AEC-Q100
Grade	Automotive	RoHS	Yes
Lead Finish	NiPdAu	Packaging	Tape & Reel (2,500 per Reel)
ECCN	EAR99	Product Status	Active (In Production)

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use.

DESIGN REFERENCE

Circuit Considerations for TPS5450MDDAREP

Output Voltage & Configuration

The TPS5450MDDAREP offers flexible output voltage configuration:

Output Voltage Setting: Adjustable down to 1.22V using an external resistor divider with 1.5% initial accuracy[reference:13]
Switching Frequency: Fixed 500-kHz switching frequency for small filter size; typically 400-600 kHz over temperature[reference:14][reference:15]
Control Architecture: Voltage-mode control with input voltage feed-forward for improved line regulation and transient response[reference:16]
Internal Compensation: Type III compensation minimizes external parts count and reduces design complexity[reference:17][reference:18]
Soft-Start: Internally set slow-start circuit (approximately 8 ms) limits inrush currents[reference:19][reference:20]
Light-Load Operation: The converter can enter Discontinuous Conduction Mode (DCM) for improved efficiency at light loads[reference:21]

PCB and Power-Supply Guidance

Step-down converter performance depends on layout, bypassing, and component selection:

Input Capacitor: Place a high-quality ceramic capacitor close to the VIN and GND pins to minimize input voltage ripple
Output Capacitor: Select output capacitor based on application requirements; internal compensation supports a wide range of output capacitors
Catch Diode: As a non-synchronous converter, an external Schottky catch diode is required to provide the low-side current path[reference:22]
PowerPAD™: The exposed thermal pad on the bottom of the HSOIC package must be soldered to the PCB for proper thermal and electrical performance
Enable Pin: Active-high enable pin (ENA) with 18-µA shutdown current reduces power consumption when disabled[reference:23]
Thermal Management: MSL rating Level-1-260C-UNLIM; ensure adequate PCB copper area for heat dissipation[reference:24]
Verify the recommended PCB footprint from the official datasheet before production

8-PIN HSOIC POWERPAD™ (DDA)

Pin Configuration Reference for TPS5450MDDAREP

TPS5450

HSOIC (DDA) TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The DDA package has 8 pins with exposed PowerPAD™ (Pin 9) connected to GND.

1 NC No Connect - Not internally connected

2 VIN Input Supply Voltage - 5.5V to 36V

3 ENA Enable Input - Active High; shutdown supply current reduced to 18 µA when low

4 NC No Connect - Not internally connected

5 FB Feedback Input - Connect to external resistor divider to set output voltage

6 COMP Compensation - Internal Type III compensation minimizes external parts

7 GND Ground - Power and signal ground reference

8 PH Phase / Switch Node - Connect to inductor and catch diode

APPLICATION AREAS

Typical Applications for TPS5450MDDAREP

High-Density Point-of-Load Regulators

Power regulation for high-density computing and networking applications[reference:25].

LCD Displays & Plasma Displays

Display power supplies requiring high efficiency and wide input voltage range[reference:26].

Battery Chargers

Battery charging systems requiring 5A output current capability[reference:27].

12-V/24-V Distributed Power Systems

Automotive and industrial distributed power systems[reference:28].

Defense & Aerospace Systems

Enhanced Product (EP) with controlled baseline, single assembly/test/fabrication site, and full traceability[reference:29].

Medical Equipment

High-reliability medical applications requiring extended temperature range[reference:30].

REPLACEMENT GUIDANCE

Selecting an Alternative for TPS5450MDDAREP

A replacement for the TPS5450MDDAREP should not be selected only by product category. The electrical characteristics, package, and pin configuration must be evaluated against the actual circuit requirements.

Input voltage range (5.5V–36V)

Output current capability (5A continuous, 6A peak)

Switching frequency (500kHz fixed)

Control mode (Voltage-mode with input feedforward)

Package (8-pin HSOIC PowerPAD, DDA)

Temperature range (–55°C to +125°C)

Enhanced Product (EP) qualification

Internal compensation (Type III)

Family alternatives: TPS5430MDDAREP (3A version, same package and pinout)[reference:31][reference:32], TPS5450QDDARQ1 (automotive AEC-Q100 version, same electrical specs), TPS5450DDAR (standard commercial version), TPS5450DDARG4 (standard version with different packaging). The TPS5450MDDAREP is the Enhanced Product version with extended temperature range (–55°C to 125°C) and EP qualification[reference:33]. For non-EP requirements with similar specifications, consider TPS5450DDAR. For 3A output current requirements, consider TPS5430MDDAREP[reference:34]. Select based on temperature range, EP qualification, and packaging needs.

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MANUFACTURER INFORMATION

Texas Instruments

The TPS5450-EP (TPS5450MDDAREP) belongs to the SWIFT™ family of DC/DC regulators from Texas Instruments. The Enhanced Product (EP) version provides controlled baseline, one assembly/test/fabrication site, extended product life cycle, extended product-change notification, and full product traceability for defense, aerospace, and high-reliability applications[reference:35]. The device is also qualified for automotive applications (AEC-Q100)[reference:36].

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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Specifications

Product Attribute: Attribute Value

Part Number: TPS5450MDDAREP

Manufacturer: Texas Instruments

Package: 8-PowerSOIC (0.154", 3.90mm Width)

Series: SWIFT™

Package/Case: 8-PowerSOIC (0.154", 3.90mm Width)

Packaging: Tape & Reel (TR)

Product Status: Active

Function: Step-Down

Output Configuration: Positive

Topology: Buck

Output Type: Adjustable

Number of Outputs: 1

Voltage - Input (Min): 5.5V

Voltage - Input (Max): 36V

Voltage - Output (Min/Fixed): 1.221V

Voltage - Output (Max): 32.04V

Current - Output: 5A

Frequency - Switching: 500kHz

Synchronous Rectifier: No

Operating Temperature: -55°C ~ 125°C (TJ)

Grade: Automotive

Qualification: AEC-Q100

Mounting Type: Surface Mount

Supplier Device Package: 8-SO PowerPad

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TPS5450MDDAREP Procurement and Technical Support

TPS5450MDDAREP is manufactured by Texas Instruments. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

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Part Number: TPS5450MDDAREP

Manufacturer: Texas Instruments

Package: 8-PowerSOIC (0.154", 3.90mm Width)

Category: Voltage Regulators - DC DC Switching Regulators

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