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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
RT8289GSP

RT8289GSP

IC REG BUCK ADJ 5A 8SOP

Richtek USA Inc.

26,156
RT8289GSP

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 5.5V Buck 32V 1.222V 26V 5A 500kHz - No - -40°C ~ 85°C (TA) Surface Mount 8-SOP-EP
LM2575HVS-ADJ/NOPB

LM2575HVS-ADJ/NOPB

IC REG BUCK ADJ 1A TO263

Texas Instruments

353
LM2575HVS-ADJ/NOPB

Datasheet

SIMPLE SWITCHER® TO-263-6, D2PAK (5 Leads + Tab), TO-263BA Tube Active Step-Down Positive Adjustable 1 4V Buck 60V 1.23V 57V 1A 52kHz - No - -40°C ~ 125°C (TJ) Surface Mount TO-263 (DDPAK-5)
LM22679TJ-ADJ/NOPB

LM22679TJ-ADJ/NOPB

IC REG BUCK ADJ 5A TO263-7

Texas Instruments

1,472
LM22679TJ-ADJ/NOPB

Datasheet

SIMPLE SWITCHER® TO-263-7 Thin Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 42V 1.285V 37V 5A 500kHz - No - -40°C ~ 125°C (TJ) Surface Mount TO-263-7 Thin
ADP5073ACPZ-R7

ADP5073ACPZ-R7

IC REG BUCK BST ADJ 1.2A 16LFCSP

Analog Devices Inc.

4,056
ADP5073ACPZ-R7

Datasheet

- 16-WFQFN Exposed Pad, CSP Tape & Reel (TR) Active Ratiometric, Step-Up/Step-Down Negative Adjustable 1 2.85V Buck-Boost 15V Vin-39V - 1.2A 1.2MHz, 2.4MHz - No - -40°C ~ 125°C (TJ) Surface Mount 16-LFCSP (3x3)
RT8279GSP

RT8279GSP

IC REG BUCK ADJ 5A 8SOP

Richtek USA Inc.

20,464
RT8279GSP

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 5.5V Buck 36V 1.222V 26V 5A 500kHz - No - -40°C ~ 85°C (TA) Surface Mount 8-SOP-EP
LM61495QRPHRQ1

LM61495QRPHRQ1

IC REG BUCK ADJ 10A 16VQFN

Texas Instruments

9,622
LM61495QRPHRQ1

Datasheet

- 16-PowerVFQFN Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3V Buck 36V 1V 34.2V 10A 200kHz ~ 2.2MHz AEC-Q100 Yes Automotive -40°C ~ 150°C (TJ) Surface Mount, Wettable Flank 16-VQFN-HR (4.5x3.5)
LM21212MHX-2/NOPB

LM21212MHX-2/NOPB

IC REG BUCK ADJ 12A 20HTSSOP

Texas Instruments

2,240
LM21212MHX-2/NOPB

Datasheet

- 20-PowerTSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Active Step-Down Positive Adjustable 1 2.95V Buck 5.5V 0.6V 5.5V 12A 300kHz ~ 1.55MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-HTSSOP
LM76005QRNPRQ1

LM76005QRNPRQ1

IC REG BUCK ADJ 5A 30WQFN

Texas Instruments

5,112
LM76005QRNPRQ1

Datasheet

- 30-WFQFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3.5V Buck 60V 1V 57V 5A 200kHz ~ 500kHz AEC-Q100 Yes Automotive -40°C ~ 125°C (TJ) Surface Mount, Wettable Flank 30-WQFN (6x4)
LM2678SX-ADJ/NOPB

LM2678SX-ADJ/NOPB

IC REG BUCK ADJ 5A TO263

Texas Instruments

1,308
LM2678SX-ADJ/NOPB

Datasheet

SIMPLE SWITCHER® TO-263-8, D2PAK (7 Leads + Tab), TO-263CA Tape & Reel (TR) Active Step-Down Positive Adjustable 1 8V Buck 40V 1.21V 37V 5A 260kHz - No - -40°C ~ 125°C (TJ) Surface Mount TO-263 (DDPAK-7)
LM2678SX-5.0/NOPB

LM2678SX-5.0/NOPB

IC REG BUCK 5V 5A TO263

Texas Instruments

1,141
LM2678SX-5.0/NOPB

Datasheet

SIMPLE SWITCHER® TO-263-8, D2PAK (7 Leads + Tab), TO-263CA Tape & Reel (TR) Active Step-Down Positive Fixed 1 8V Buck 40V 5V - 5A 260kHz - No - -40°C ~ 125°C (TJ) Surface Mount TO-263 (DDPAK-7)
LM2678T-ADJ/NOPB

LM2678T-ADJ/NOPB

IC REG BUCK ADJ 5A TO220-7

Texas Instruments

556
LM2678T-ADJ/NOPB

Datasheet

SIMPLE SWITCHER® TO-220-7 Formed Leads Tube Active Step-Down Positive Adjustable 1 8V Buck 40V 1.21V 37V 5A 260kHz - No - -40°C ~ 125°C (TJ) Through Hole TO-220-7
LM22678TJ-ADJ/NOPB

LM22678TJ-ADJ/NOPB

IC REG BUCK ADJ 5A TO263-7

Texas Instruments

1,405
LM22678TJ-ADJ/NOPB

Datasheet

SIMPLE SWITCHER® TO-263-7 Thin Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 42V 1.285V 37V 5A 500kHz - No - -40°C ~ 125°C (TJ) Surface Mount TO-263-7 Thin
LM2676S-ADJ/NOPB

LM2676S-ADJ/NOPB

IC REG BUCK ADJ 3A TO263

Texas Instruments

1,725
LM2676S-ADJ/NOPB

Datasheet

SIMPLE SWITCHER® TO-263-8, D2PAK (7 Leads + Tab), TO-263CA Tube Active Step-Down Positive Adjustable 1 8V Buck 40V 1.2V 37V 3A 260kHz - No - -40°C ~ 125°C (TJ) Surface Mount TO-263 (DDPAK-7)
LM2594HVM-5.0/NOPB

LM2594HVM-5.0/NOPB

IC REG BUCK 5V 500MA 8SOIC

Texas Instruments

1,020
LM2594HVM-5.0/NOPB

Datasheet

SIMPLE SWITCHER® 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Down Positive Fixed 1 4.5V Buck 60V 5V - 500mA 150kHz - No - -40°C ~ 125°C (TJ) Surface Mount 8-SOIC
LM2676S-5.0/NOPB

LM2676S-5.0/NOPB

IC REG BUCK 5V 3A TO263

Texas Instruments

825
LM2676S-5.0/NOPB

Datasheet

SIMPLE SWITCHER® TO-263-8, D2PAK (7 Leads + Tab), TO-263CA Tube Active Step-Down Positive Fixed 1 8V Buck 40V 5V - 3A 260kHz - No - -40°C ~ 125°C (TJ) Surface Mount TO-263 (DDPAK-7)
LM2676S-3.3/NOPB

LM2676S-3.3/NOPB

IC REG BUCK 3.3V 3A TO263

Texas Instruments

622
LM2676S-3.3/NOPB

Datasheet

SIMPLE SWITCHER® TO-263-8, D2PAK (7 Leads + Tab), TO-263CA Tube Active Step-Down Positive Fixed 1 8V Buck 40V 3.3V - 3A 260kHz - No - -40°C ~ 125°C (TJ) Surface Mount TO-263 (DDPAK-7)
LM2673SD-ADJ/NOPB

LM2673SD-ADJ/NOPB

IC REG BUCK ADJ 3A 14VSON

Texas Instruments

206
LM2673SD-ADJ/NOPB

Datasheet

SIMPLE SWITCHER® 14-VDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 8V Buck 40V 1.2V 37V 3A 260kHz - No - -40°C ~ 125°C (TJ) Surface Mount 14-VSON (5x6)
LM46002QPWPRQ1

LM46002QPWPRQ1

IC REG BUCK ADJ 2A 16HTSSOP

Texas Instruments

2,118
LM46002QPWPRQ1

Datasheet

SIMPLE SWITCHER® 16-PowerTSSOP (0.173", 4.40mm Width) Tape & Reel (TR) Not For New Designs Step-Down Positive Adjustable 1 3.5V Buck 60V 1V 28V 2A 200kHz ~ 2.2MHz AEC-Q100 Yes Automotive -40°C ~ 125°C (TJ) Surface Mount 16-HTSSOP
LM5575MH/NOPB

LM5575MH/NOPB

IC REG BUCK ADJ 1.5A 16HTSSOP

Texas Instruments

1,283
LM5575MH/NOPB

Datasheet

SIMPLE SWITCHER® 16-PowerTSSOP (0.173", 4.40mm Width) Tube Active Step-Down Positive Adjustable 1 6V Buck 75V 1.225V 70V 1.5A 50kHz ~ 500kHz - No - -40°C ~ 125°C (TJ) Surface Mount 16-HTSSOP
TPS54540DDA

TPS54540DDA

IC REG BCK SPLIT RAIL ADJ 8SOPWR

Texas Instruments

1,856
TPS54540DDA

Datasheet

Eco-Mode™ 8-PowerSOIC (0.154", 3.90mm Width) Tube Not For New Designs Step-Down Positive Adjustable 1 4.5V Buck, Split Rail 42V 0.8V 41.1V 5A 100kHz ~ 2.5MHz - No - -40°C ~ 150°C (TJ) Surface Mount 8-SO PowerPad
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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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