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Voltage Regulators - DC DC Switching Regulators

Manufacturer Series Package/Case Packaging Part Status Function Output Configuration Output Type Number of Outputs Voltage - Input (Min) Topology Voltage - Input (Max) Voltage - Output (Min/Fixed) Voltage - Output (Max) Current - Output Frequency - Switching Qualification Synchronous Rectifier Grade Operating Temperature Mounting Style Supplier Device 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Photo Mfr. Part # Availability Price Quantity Datasheet Series Package/Case Packaging Part Status Function Output Configuration Output Type Number of Outputs Voltage - Input (Min) Topology Voltage - Input (Max) Voltage - Output (Min/Fixed) Voltage - Output (Max) Current - Output Frequency - Switching Qualification Synchronous Rectifier Grade Operating Temperature Mounting Style Supplier Device Package
TPS54339EDDAR

TPS54339EDDAR

IC REG BUCK ADJ 3A 8SOPWR

Texas Instruments

4,191
TPS54339EDDAR

Datasheet

SWIFT™, D-CAP2™, Eco-Mode™ 8-PowerSOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 23V 0.76V 7V 3A 600kHz - Yes - -40°C ~ 85°C (TA) Surface Mount 8-SO PowerPad
TPS54319RTER

TPS54319RTER

IC REG BUCK ADJ 3A 16WQFN

Texas Instruments

8,802
TPS54319RTER

Datasheet

SWIFT™ 16-WFQFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 2.95V Buck 6V 0.827V 4.5V 3A 300kHz ~ 2MHz - Yes - -40°C ~ 150°C (TJ) Surface Mount 16-WQFN (3x3)
ST1PS02B1QTR

ST1PS02B1QTR

IC REG BUCK ADJ 400MA 12TQFN

STMicroelectronics

5,995
ST1PS02B1QTR

Datasheet

- 12-UFQFN Tape & Reel (TR) Active Step-Down Positive Adjustable 1 1.8V Buck 5.5V 1.8V 2.5V 400mA 2MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 12-TQFN (1.7x2)
ST1PS02CQTR

ST1PS02CQTR

IC REG BUCK ADJ 400MA 12TQFN

STMicroelectronics

5,283
ST1PS02CQTR

Datasheet

- 12-UFQFN Tape & Reel (TR) Active Step-Down Positive Adjustable 1 1.8V Buck 5.5V 2.6V 3.3V 400mA 2MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 12-TQFN (1.7x2)
RT8297BZQW

RT8297BZQW

IC REG BUCK ADJ 1.5A 8WDFN

Richtek USA Inc.

9,289
RT8297BZQW

Datasheet

- 8-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4V Buck 17V 0.8V 12V 1.5A 800kHz - Yes - -40°C ~ 85°C (TA) Surface Mount 8-WDFN (2x2)
TPS5401DGQ

TPS5401DGQ

IC REG BUCK ADJ 500MA 10HVSSOP

Texas Instruments

6,530
TPS5401DGQ

Datasheet

SWIFT™, Eco-Mode™ 10-PowerTFSOP, 10-MSOP (0.118", 3.00mm Width) Tube Active Step-Down Positive Adjustable 1 3.5V Buck 42V 0.8V 39V 500mA 100kHz ~ 2.5MHz - No - -40°C ~ 150°C (TJ) Surface Mount 10-HVSSOP
BD95821MUV-E2

BD95821MUV-E2

IC REG BUCK ADJ 2A 16VQFN

Rohm Semiconductor

2,080
BD95821MUV-E2

Datasheet

H³® 16-VFQFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 7.5V Buck 15V 0.8V 5.5V 2A 500kHz ~ 800kHz - Yes - -20°C ~ 100°C (TA) Surface Mount VQFN016V3030
TPS563249DDCT

TPS563249DDCT

IC REG BUCK ADJ 3A SOT23

Texas Instruments

909
TPS563249DDCT

Datasheet

D-CAP3™ SOT-23-6 Thin, TSOT-23-6 Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 17V 0.6V 7V 3A 1.4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount SOT-23-THIN
TPS563240DDCT

TPS563240DDCT

IC REG BUCK ADJ 3A SOT23

Texas Instruments

666
TPS563240DDCT

Datasheet

D-CAP3™ SOT-23-6 Thin, TSOT-23-6 Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 17V 0.6V 7V 3A 1.4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount SOT-23-THIN
LM2575WU

LM2575WU

IC REG BUCK ADJ 1A TO263-5

Microchip Technology

125
LM2575WU

Datasheet

- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA Tube Active Step-Down Positive Adjustable 1 4V Buck 40V 1.23V 37V 1A 52kHz - No - -40°C ~ 125°C (TJ) Surface Mount TO-263-5
S-85S1AB20-I6T1U

S-85S1AB20-I6T1U

IC REG BUCK 2V 200MA SNT-6A

ABLIC Inc.

874
S-85S1AB20-I6T1U

Datasheet

S-85S1A 6-SMD, Flat Leads Tape & Reel (TR) Active Step-Down Positive Fixed 1 2.2V Buck 5.5V 2V - 200mA 1MHz - Yes - -40°C ~ 85°C (TA) Surface Mount SNT-6A
R1245N001F-TR-FE

R1245N001F-TR-FE

IC REG BUCK ADJ 1.2A SOT23-6W

Nisshinbo Micro Devices Inc.

23,045
R1245N001F-TR-FE

Datasheet

R1245x SOT-23-6 Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 30V 0.8V 30V 1.2A 1MHz - No - -40°C ~ 105°C (TA) Surface Mount SOT-23-6W
RT7251AZQW

RT7251AZQW

IC REG BUCK ADJ 1.5A 8WDFN

Richtek USA Inc.

18,277
RT7251AZQW

Datasheet

- 8-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4V Buck 17V 0.8V 12V 1.5A 340kHz - Yes - -40°C ~ 85°C (TA) Surface Mount 8-WDFN (2x2)
RT7247BHGSP

RT7247BHGSP

IC REG BUCK ADJ 2A 8SOP

Richtek USA Inc.

7,694
RT7247BHGSP

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 18V 0.8V 12V 2A 1.2MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 8-SOP-EP
LM2750LD-ADJ/NOPB

LM2750LD-ADJ/NOPB

IC REG CHARGE PUMP ADJ 1 10WSON

Texas Instruments

7,510
LM2750LD-ADJ/NOPB

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Up Positive Adjustable 1 2.7V Charge Pump 5.6V 3.8V 5.2V 120mA 1.7MHz - No - -40°C ~ 125°C (TA) Surface Mount 10-WSON (3x3)
BD9B300MUV-E2

BD9B300MUV-E2

IC REG BUCK ADJ 3A 16VQFN

Rohm Semiconductor

5,518
BD9B300MUV-E2

Datasheet

- 16-VFQFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 2.7V Buck 5.5V 0.8V 4.4V 3A 1MHz, 2MHz - Yes - -40°C ~ 85°C (TA) Surface Mount VQFN016V3030
LM3671QMF-1.2/NOPB

LM3671QMF-1.2/NOPB

IC REG BUCK 1.2V 600MA SOT23-5

Texas Instruments

4,345
LM3671QMF-1.2/NOPB

Datasheet

- SC-74A, SOT-753 Tape & Reel (TR) Active Step-Down Positive Fixed 1 2.7V Buck 5.5V 1.2V - 600mA 2MHz AEC-Q100 Yes Automotive -40°C ~ 85°C (TA) Surface Mount SOT-23-5
RT7250BZSP

RT7250BZSP

IC REG BUCK ADJ 2A 8SOP

Richtek USA Inc.

2,165
RT7250BZSP

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4V Buck 17V 0.8V 12V 2A 800kHz - Yes - -40°C ~ 85°C (TA) Surface Mount 8-SOP-EP
AOZ1268AQI

AOZ1268AQI

IC REG BUCK ADJ 10A 22QFN

Alpha & Omega Semiconductor Inc.

1,159
AOZ1268AQI

Datasheet

EZBuck™ 22-PowerVFQFN Tape & Reel (TR) Active Step-Down Positive Adjustable 1 6.5V Buck 28V 0.6V 23.8V 10A - - Yes - -40°C ~ 85°C (TA) Surface Mount 22-QFN (4x4)
RT7247AHGSP

RT7247AHGSP

IC REG BUCK ADJ 2A 8SOP

Richtek USA Inc.

998
RT7247AHGSP

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 18V 0.8V 15V 2A 340kHz - Yes - -40°C ~ 85°C (TA) Surface Mount 8-SOP-EP
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Voltage Regulators - DC-DC Switching Regulators Overview

DC-DC Switching Regulators, also known as DC-DC converters, are essential components in modern power management systems. Unlike linear regulators that dissipate excess energy as heat, switching regulators use high-frequency switching elements and energy storage components (inductors, capacitors) to efficiently step up, step down, or invert voltage levels. This design enables conversion efficiency levels of 80–95% or higher, making them indispensable for portable electronics, industrial automation, automotive systems, and communication equipment.

Key Advantages

High Efficiency: By minimizing energy loss, DC-DC switching regulators extend battery life in mobile devices and reduce overall power consumption in embedded systems.
Flexibility: Available in buck (step-down), boost (step-up), buck-boost, and inverting topologies, they provide engineers with versatile solutions for a wide range of voltage conversion needs.
Compact Size: With the integration of control circuitry and optimized packaging, regulators are now available in ultra-small footprints such as QFN and TSSOP, enabling compact PCB designs.
Thermal Performance: Efficient energy transfer reduces heat generation, which is critical in high-density boards and automotive ECUs.

Typical Applications

Consumer Electronics: Smartphones, tablets, wearables, and gaming devices rely on DC-DC converters for stable operation of processors, memory, and RF modules.
Industrial Equipment: Used in factory automation, robotics, and sensor networks where stable power is critical.
Automotive Systems: Powertrain control modules, infotainment units, and ADAS (Advanced Driver Assistance Systems) require efficient DC-DC conversion to meet stringent performance and reliability standards.
Telecommunication & Networking: Routers, base stations, and IoT gateways integrate switching regulators to ensure consistent power delivery under variable loads.

Features to Consider

When selecting a DC-DC switching regulator, engineers should evaluate:
Input voltage range and output voltage accuracy
Maximum output current capability
Efficiency curves under various load conditions
Switching frequency and EMI performance
Package type and thermal dissipation
Compliance with RoHS/REACH and automotive AEC-Q100 standards

Inventory and Availability

At OEMSTOCK.COM, we maintain a broad selection of Voltage Regulators – DC-DC Switching Regulators from leading manufacturers such as Texas Instruments, Analog Devices, Nuvoton, and Nisshinbo Micro Devices. Products are available in multiple packages and stocked in significant quantities to support both prototype development and large-scale production. Our global sourcing network ensures competitive pricing and reliable lead times, while our RFQ system allows engineers and procurement teams to request customized quotations instantly.
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