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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
LT8646SIV#PBF

LT8646SIV#PBF

IC REG BUCK ADJ 8A 32LQFN

Analog Devices Inc.

371
LT8646SIV#PBF

Datasheet

Silent Switcher®2 32-TFQFN Exposed Pad Tray Active Step-Down Positive Adjustable 1 3.4V Buck 65V 0.97V 65V 8A 200kHz ~ 2.2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 32-LQFN (6x4)
LTC3649IUFD#PBF

LTC3649IUFD#PBF

IC REG BUCK ADJ 4A 28QFN

Analog Devices Inc.

526
LTC3649IUFD#PBF

Datasheet

- 28-WFQFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 3.1V Buck 60V 0V 55V 4A 1MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 28-QFN (4x5)
LTC3415EUHF#TRPBF

LTC3415EUHF#TRPBF

IC REG BUCK ADJ 7A 38QFN

Analog Devices Inc.

358
LTC3415EUHF#TRPBF

Datasheet

PolyPhase® 38-WFQFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 2.375V Buck 5.5V 0.6V 5.5V 7A 1.5MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 38-QFN (5x7)
LTC7149IUFD#PBF

LTC7149IUFD#PBF

IC REG BUCK ADJ 4A 28QFN

Analog Devices Inc.

195
LTC7149IUFD#PBF

Datasheet

- 28-WFQFN Exposed Pad Tube Active Step-Down Negative Adjustable 1 3.4V Buck 60V 0V -28V 4A 1MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 28-QFN (4x5)
LT8648SHV#PBF

LT8648SHV#PBF

IC REG BUCK ADJ 15A 36LQFN

Analog Devices Inc.

669
LT8648SHV#PBF

Datasheet

Silent Switcher®2 36-TFQFN Exposed Pad Tray Active Step-Down Positive Adjustable 1 3V Buck 42V 0.6V 42V 15A 200kHz ~ 2.2MHz - Yes - -40°C ~ 150°C (TJ) Surface Mount 36-LQFN (7x4)
LT1074CT7#PBF

LT1074CT7#PBF

IC REG BUCK BST ADJ 5.5A TO220-7

Analog Devices Inc.

1,509
LT1074CT7#PBF

Datasheet

- TO-220-7 Formed Leads Tube Active Step-Up, Step-Down, Step-Up/Step-Down Positive or Negative Adjustable 1 8V Buck, Boost, Flyback 45V 2.5V 35V 5.5A (Switch) 100kHz - No - 0°C ~ 70°C (TA) Through Hole TO-220-7
LT3434IFE#PBF

LT3434IFE#PBF

IC REG BUCK ADJ 3A 16TSSOP

Analog Devices Inc.

525
LT3434IFE#PBF

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 3V Buck 60V 1.25V 55.2V 3A (Switch) 200kHz - No - -40°C ~ 125°C (TJ) Surface Mount 16-TSSOP-EP
LT8646SIV#WPBF

LT8646SIV#WPBF

IC REG BUCK ADJ 8A 32LQFN

Analog Devices Inc.

1,255
LT8646SIV#WPBF

Datasheet

Silent Switcher®2 32-TFQFN Exposed Pad Tray Active Step-Down Positive Adjustable 1 3.4V Buck 65V 0.97V 65V 8A 200kHz ~ 2.2MHz AEC-Q100 Yes Automotive -40°C ~ 125°C (TJ) Surface Mount 32-LQFN (6x4)
TPS5430MDDAREP

TPS5430MDDAREP

IC REG BUCK ADJ 3A 8SOPWR

Texas Instruments

5,955
TPS5430MDDAREP

Datasheet

SWIFT™ 8-PowerSOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Step-Down Positive Adjustable 1 5.5V Buck 36V 1.221V 32.04V 3A 500kHz - No - -55°C ~ 125°C (TJ) Surface Mount 8-SO PowerPad
TPS5450MDDAREP

TPS5450MDDAREP

IC REG BUCK ADJ 5A 8SOPWR

Texas Instruments

4,658
TPS5450MDDAREP

Datasheet

SWIFT™ 8-PowerSOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Step-Down Positive Adjustable 1 5.5V Buck 36V 1.221V 32.04V 5A 500kHz AEC-Q100 No Automotive -55°C ~ 125°C (TJ) Surface Mount 8-SO PowerPad
LTC3418EUHF#TRPBF

LTC3418EUHF#TRPBF

IC REG BUCK ADJ 8A 38QFN

Analog Devices Inc.

7,557
LTC3418EUHF#TRPBF

Datasheet

- 38-WFQFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 2.25V Buck 5.5V 0.8V 5V 8A 1MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 38-QFN (5x7)
LTC3418EUHF#PBF

LTC3418EUHF#PBF

IC REG BUCK ADJ 8A 38QFN

Analog Devices Inc.

234
LTC3418EUHF#PBF

Datasheet

- 38-WFQFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 2.25V Buck 5.5V 0.8V 5V 8A 1MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 38-QFN (5x7)
MAX8654ETX+

MAX8654ETX+

IC REG BUCK ADJ 8A 36TQFN

Analog Devices Inc./Maxim Integrated

450
MAX8654ETX+

Datasheet

- 36-WFQFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 4.5V Buck 14V 0.6V 11.9V 8A 250kHz ~ 1.2MHz - No - -40°C ~ 85°C (TA) Surface Mount 36-TQFN (6x6)
LT1170CQ#PBF

LT1170CQ#PBF

IC REG BUCK BOOST ADJ 5A DDPAK-5

Analog Devices Inc.

234
LT1170CQ#PBF

Datasheet

- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA Tube Active Step-Up, Step-Down, Step-Up/Step-Down Positive or Negative Adjustable 1 3V Buck, Boost, Cuk, Flyback, Forward Converter 40V 1.244V 65V (Switch) 5A (Switch) 100kHz - No - 0°C ~ 100°C (TJ) Surface Mount DDPAK-5
PI3303-00-LGIZ

PI3303-00-LGIZ

IC REG BUCK ADJ/6.5V 8A 123LGA

Vicor Corporation

620
PI3303-00-LGIZ

Datasheet

- 123-BLGA Module Tray Active Step-Down Positive Adjustable (Fixed) 1 8V Buck 36V 6.5V (12V) 13V 8A 1.4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 123-LGA (14x10)
LT3999MPMSE#PBF

LT3999MPMSE#PBF

IC REG PUSH-PULL ADJ 1A 10MSOP

Analog Devices Inc.

1,657
LT3999MPMSE#PBF

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Up/Step-Down Positive, Isolation Capable Adjustable 1 2.7V Push-Pull 36V - - 1A 50kHz ~ 1MHz - No - -55°C ~ 150°C (TJ) Surface Mount 10-MSOP-EP
LT1074HVCT7#PBF

LT1074HVCT7#PBF

IC REG BUCK BST ADJ 5.5A TO220-7

Analog Devices Inc.

592
LT1074HVCT7#PBF

Datasheet

- TO-220-7 Formed Leads Tube Active Step-Up, Step-Down, Step-Up/Step-Down Positive or Negative Adjustable 1 8V Buck, Boost, Flyback 64V 2.5V 35V 5.5A (Switch) 100kHz - No - 0°C ~ 70°C (TA) Through Hole TO-220-7
MAX1709ESE+

MAX1709ESE+

IC REG BOOST ADJ 7.5A 16SOIC

Analog Devices Inc./Maxim Integrated

107
MAX1709ESE+

Datasheet

- 16-SOIC (0.154", 3.90mm Width) Tube Active Step-Up Positive Adjustable (Programmable) 1 0.7V Boost 5V 2.5V (3.3V, 5V) 5.5V 7.5A (Switch) 350kHz ~ 1MHz - No - -40°C ~ 85°C (TA) Surface Mount 16-SOIC
LTC3119EUFD#TRPBF

LTC3119EUFD#TRPBF

IC REG BUCK BOOST ADJ 5A 28QFN

Analog Devices Inc.

6,812
LTC3119EUFD#TRPBF

Datasheet

- 28-WFQFN Exposed Pad Tape & Reel (TR) Active Step-Up/Step-Down Positive Adjustable 1 2.5V Buck-Boost 18V 0.8V 18V 5A 400kHz ~ 2MHz - Yes - -40°C ~ 125°C (TA) Surface Mount 28-QFN (4x5)
LTC3119EUFD#PBF

LTC3119EUFD#PBF

IC REG BUCK BOOST ADJ 5A 28QFN

Analog Devices Inc.

696
LTC3119EUFD#PBF

Datasheet

- 28-WFQFN Exposed Pad Tube Active Step-Up/Step-Down Positive Adjustable 1 2.5V Buck-Boost 18V 0.8V 18V 5A 400kHz ~ 2MHz - Yes - -40°C ~ 125°C (TA) Surface Mount 28-QFN (4x5)
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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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