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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
LTC3633IUFD#TRPBF

LTC3633IUFD#TRPBF

IC REG BUCK ADJ 3A DL 28QFN

Analog Devices Inc.

2,686
LTC3633IUFD#TRPBF

Datasheet

- 28-WFQFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 2 3.6V Buck 15V 0.6V 14.7V 3A 500kHz ~ 4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 28-QFN (4x5)
LTC3412AIUF#PBF

LTC3412AIUF#PBF

IC REG BUCK ADJ 3A 16QFN

Analog Devices Inc.

1,370
LTC3412AIUF#PBF

Datasheet

- 16-WQFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 2.25V Buck 5.5V 0.8V 5V 3A 300kHz ~ 4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 16-QFN (4x4)
LTC3633AIUFD#TRPBF

LTC3633AIUFD#TRPBF

IC REG BUCK ADJ 3A DL 28QFN

Analog Devices Inc.

953
LTC3633AIUFD#TRPBF

Datasheet

- 28-WFQFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 2 3.6V Buck 20V 0.6V 6V 3A 500kHz ~ 4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 28-QFN (4x5)
LTC3633IUFD#PBF

LTC3633IUFD#PBF

IC REG BUCK ADJ 3A DL 28QFN

Analog Devices Inc.

708
LTC3633IUFD#PBF

Datasheet

- 28-WFQFN Exposed Pad Tube Active Step-Down Positive Adjustable 2 3.6V Buck 15V 0.6V 14.7V 3A 500kHz ~ 4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 28-QFN (4x5)
LTC3633AIUFD#PBF

LTC3633AIUFD#PBF

IC REG BUCK ADJ 3A DL 28QFN

Analog Devices Inc.

691
LTC3633AIUFD#PBF

Datasheet

- 28-WFQFN Exposed Pad Tube Active Step-Down Positive Adjustable 2 3.6V Buck 20V 0.6V 6V 3A 500kHz ~ 4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 28-QFN (4x5)
MAX660ESA+T

MAX660ESA+T

IC REG CHRG PUMP INV 100MA 8SOIC

Analog Devices Inc./Maxim Integrated

2,358
MAX660ESA+T

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Ratiometric Positive or Negative Fixed 1 1.5V Charge Pump 5.5V -Vin, 2Vin - 100mA 10kHz, 80kHz - No - -40°C ~ 85°C (TA) Surface Mount 8-SOIC
LT8640IUDC#PBF

LT8640IUDC#PBF

IC REG BUCK ADJ 5A 20QFN

Analog Devices Inc.

8,006
LT8640IUDC#PBF

Datasheet

Silent Switcher®1 20-WFQFN, 18 Leads, Exposed Pad Tube Active Step-Down Positive Adjustable 1 3.4V Buck 42V 0.97V 42V 5A 210kHz ~ 2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-QFN (3x4)
LT8641IUDC#PBF

LT8641IUDC#PBF

IC REG BUCK ADJ 3.5A 20QFN

Analog Devices Inc.

6,459
LT8641IUDC#PBF

Datasheet

Silent Switcher®1 20-WFQFN, 18 Leads, Exposed Pad Tube Active Step-Down Positive Adjustable 1 3V Buck 65V 0.8V 64.35V 3.5A 210kHz ~ 2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-QFN (3x4)
LT8640IUDC-1#TRPBF

LT8640IUDC-1#TRPBF

IC REG BUCK ADJ 5A 20QFN

Analog Devices Inc.

5,256
LT8640IUDC-1#TRPBF

Datasheet

Silent Switcher®1 20-WFQFN, 18 Leads, Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3.4V Buck 42V 0.97V 42V 5A 210kHz ~ 2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-QFN (3x4)
LT8641IUDC#TRPBF

LT8641IUDC#TRPBF

IC REG BUCK ADJ 3.5A 20QFN

Analog Devices Inc.

4,847
LT8641IUDC#TRPBF

Datasheet

Silent Switcher®1 20-WFQFN, 18 Leads, Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3V Buck 65V 0.8V 64.35V 3.5A 210kHz ~ 2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-QFN (3x4)
LT8640IUDC#TRPBF

LT8640IUDC#TRPBF

IC REG BUCK ADJ 5A 20QFN

Analog Devices Inc.

2,967
LT8640IUDC#TRPBF

Datasheet

Silent Switcher®1 20-WFQFN, 18 Leads, Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3.4V Buck 42V 0.97V 42V 5A 210kHz ~ 2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-QFN (3x4)
MAX640ESA+T

MAX640ESA+T

IC REG BUCK ADJ/1.3V 225MA 8SOIC

Analog Devices Inc./Maxim Integrated

1,402
MAX640ESA+T

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tape & Reel (TR) Active Step-Down Positive Adjustable (Fixed) 1 4V Buck 11.5V 1.3V (3.3V) 11.5V 225mA - - No - -40°C ~ 85°C (TA) Surface Mount 8-SOIC
LTC3128IFE#PBF

LTC3128IFE#PBF

IC REG BUCK BOOST ADJ 3A 24TSSOP

Analog Devices Inc.

386
LTC3128IFE#PBF

Datasheet

- 24-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Up/Step-Down Positive Adjustable 1 1.73V Buck-Boost 5.5V 1.8V 5.5V 3A 1.2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 24-TSSOP
LT1372HVIS8#PBF

LT1372HVIS8#PBF

IC REG BUCK BOOST ADJ 1.5A 8SO

Analog Devices Inc.

183
LT1372HVIS8#PBF

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Up, Step-Down, Step-Up/Step-Down Positive or Negative Adjustable 1 2.7V Buck, Boost, Cuk, Flyback, Forward Converter, SEPIC 30V 1.245V 42V (Switch) 1.5A (Switch) 500kHz - No - -40°C ~ 125°C (TJ) Surface Mount 8-SO
LT1765EFE-3.3#TRPBF

LT1765EFE-3.3#TRPBF

IC REG BUCK 3.3V 3A 16TSSOP

Analog Devices Inc.

3,563
LT1765EFE-3.3#TRPBF

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Fixed 1 3V Buck 25V 3.3V - 3A 1.25MHz - No - 0°C ~ 125°C (TJ) Surface Mount 16-TSSOP-EP
LT8645SEV#PBF

LT8645SEV#PBF

IC REG BUCK ADJ 8A 32LQFN

Analog Devices Inc.

1,397
LT8645SEV#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)
LT8638SEV#PBF

LT8638SEV#PBF

IC REG BUCK ADJ 10A 28LQFN

Analog Devices Inc.

226
LT8638SEV#PBF

Datasheet

Silent Switcher®2 28-TFQFN Exposed Pad Tray Active Step-Down Positive Adjustable 1 2.8V Buck 42V 0.6V 42V 10A 200kHz ~ 3MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 28-LQFN (5x4)
LTC3633AIFE#PBF

LTC3633AIFE#PBF

IC REG BUCK ADJ 3A DL 28TSSOP

Analog Devices Inc.

150
LTC3633AIFE#PBF

Datasheet

- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 2 3.6V Buck 20V 0.6V 6V 3A 500kHz ~ 4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 28-TSSOP-EP
LT8614HUDC#PBF

LT8614HUDC#PBF

IC REG BUCK ADJ 4A 20QFN

Analog Devices Inc.

4,076
LT8614HUDC#PBF

Datasheet

- 20-WFQFN, 18 Leads, Exposed Pad Tube Active Step-Down Positive Adjustable 1 3.4V Buck 42V 3.3V 30V 4A 200kHz ~ 3MHz - Yes - -40°C ~ 150°C (TJ) Surface Mount 20-QFN (3x4)
LT8612EUDE#TRPBF

LT8612EUDE#TRPBF

IC REG BUCK ADJ 6A 28QFN

Analog Devices Inc.

4,951
LT8612EUDE#TRPBF

Datasheet

- 28-WFQFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3.4V Buck 42V 0.97V 41.6V 6A 200kHz ~ 2.2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 28-QFN (3x6)
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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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