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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
LT3505EMS8E#TRPBF

LT3505EMS8E#TRPBF

IC REG BUCK ADJ 1.2A 8MSOP

Analog Devices Inc.

3,102
LT3505EMS8E#TRPBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3.6V Buck 36V 0.78V 33.84V 1.2A 200kHz ~ 3.01MHz - No - -40°C ~ 85°C (TA) Surface Mount 8-MSOP-EP
LT3990EMSE-5#PBF

LT3990EMSE-5#PBF

IC REG BUCK 5V 350MA 16MSOP

Analog Devices Inc.

1,839
LT3990EMSE-5#PBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Fixed 1 4.2V Buck 62V 5V - 350mA 210kHz ~ 2.3MHz - No - -40°C ~ 125°C (TJ) Surface Mount 16-MSOP-EP
LT3663EMS8E#PBF

LT3663EMS8E#PBF

IC REG BUCK ADJ 1.2A 8MSOP

Analog Devices Inc.

1,458
LT3663EMS8E#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 7.5V Buck 36V 0.8V 6V 1.2A 1.5MHz - No - -40°C ~ 125°C (TJ) Surface Mount 8-MSOP-EP
LT3970IDDB-3.3#TRMPBF

LT3970IDDB-3.3#TRMPBF

IC REG BUCK 3.3V 350MA 10DFN

Analog Devices Inc.

1,172
LT3970IDDB-3.3#TRMPBF

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Fixed 1 4.2V Buck 40V 3.3V - 350mA 200kHz ~ 2.25MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x2)
LT3990EMSE-3.3#PBF

LT3990EMSE-3.3#PBF

IC REG BUCK 3.3V 350MA 16MSOP

Analog Devices Inc.

1,003
LT3990EMSE-3.3#PBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Fixed 1 4.2V Buck 62V 3.3V - 350mA 210kHz ~ 2.3MHz - No - -40°C ~ 125°C (TJ) Surface Mount 16-MSOP-EP
LT3970IDDB#TRMPBF

LT3970IDDB#TRMPBF

IC REG BUCK ADJ 350MA 10DFN

Analog Devices Inc.

673
LT3970IDDB#TRMPBF

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.2V Buck 40V 1.21V 25V 350mA 200kHz ~ 2.25MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x2)
LT3995EMSE#PBF

LT3995EMSE#PBF

IC REG BUCK ADJ 3A 16MSOP

Analog Devices Inc.

12,005
LT3995EMSE#PBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 4.3V Buck 60V 1.197V 55.8V 3A 200kHz ~ 2.25MHz - No - -40°C ~ 125°C (TJ) Surface Mount 16-MSOP-EP
LT1172CN8#PBF

LT1172CN8#PBF

IC REG BUCK BST ADJ 1.25A 8PDIP

Analog Devices Inc.

1,078
LT1172CN8#PBF

Datasheet

- 8-DIP (0.300", 7.62mm) 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) 1.25A (Switch) 100kHz - No - 0°C ~ 100°C (TJ) Through Hole 8-PDIP
LT8642EV-1#PBF

LT8642EV-1#PBF

IC REG BUCK ADJ 10A 20LQFN

Analog Devices Inc.

515
LT8642EV-1#PBF

Datasheet

Silent Switcher®1 20-TFQFN Exposed Pad Tray Active Step-Down Positive Adjustable 1 2.5V Buck 18V 0.6V 18V 10A 200kHz ~ 3MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-LQFN (3x4)
MAX1681ESA+

MAX1681ESA+

IC REG CHRG PUMP INV 125MA 8SOIC

Analog Devices Inc./Maxim Integrated

412
MAX1681ESA+

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Ratiometric Positive or Negative Fixed 1 2V Charge Pump 5.5V -Vin, 2Vin - 125mA 500kHz, 1MHz - No - -40°C ~ 85°C (TA) Surface Mount 8-SOIC
LTC1261IS8#PBF

LTC1261IS8#PBF

IC REG CHARGE PUMP ADJ 12MA 8SO

Analog Devices Inc.

591
LTC1261IS8#PBF

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Up/Step-Down Negative Adjustable 1 3V Charge Pump 8V -1.25V -8V 12mA 550kHz - No - -40°C ~ 85°C (TA) Surface Mount 8-SO
LTC3642EMS8E#TRPBF

LTC3642EMS8E#TRPBF

IC REG BUCK ADJ 50MA 8MSOP

Analog Devices Inc.

4,768
LTC3642EMS8E#TRPBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 45V 0.8V 45V 50mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-MSOP-EP
LT8619EDD#TRPBF

LT8619EDD#TRPBF

IC REG BUCK ADJ 1.2A 10DFN

Analog Devices Inc.

3,441
LT8619EDD#TRPBF

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3V Buck 60V 0.8V 59.4V 1.2A 300kHz ~ 2.2MHz - Yes - 0°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
TPS543C20RVFR

TPS543C20RVFR

IC REG BUCK ADJ 40A 40LQFN

Texas Instruments

3,363
TPS543C20RVFR

Datasheet

SWIFT™ 40-PowerLFQFN Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4V Buck 16V 0.6V 5.5V 40A 300kHz ~ 2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 40-LQFN-CLIP (7x5)
LT8619EDD#PBF

LT8619EDD#PBF

IC REG BUCK ADJ 1.2A 10DFN

Analog Devices Inc.

1,766
LT8619EDD#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 3V Buck 60V 0.8V 59.4V 1.2A 300kHz ~ 2.2MHz - Yes - 0°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LTC3642EDD#PBF

LTC3642EDD#PBF

IC REG BUCK ADJ 50MA 8DFN

Analog Devices Inc.

1,089
LTC3642EDD#PBF

Datasheet

- 8-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 4.5V Buck 45V 0.8V 45V 50mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-DFN (3x3)
LTC3642EMS8E-5#PBF

LTC3642EMS8E-5#PBF

IC REG BUCK 5V 50MA 8MSOP

Analog Devices Inc.

144
LTC3642EMS8E-5#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Fixed 1 4.5V Buck 45V 5V - 50mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-MSOP-EP
LTC1261LIMS8#PBF

LTC1261LIMS8#PBF

IC REG CHARG PUMP ADJ 20MA 8MSOP

Analog Devices Inc.

912
LTC1261LIMS8#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Tube Active Step-Up/Step-Down Negative Adjustable 1 2.7V Charge Pump 5.25V -1.23V -5V 20mA 650kHz - No - -40°C ~ 85°C (TA) Surface Mount 8-MSOP
LT3493EDCB#TRMPBF

LT3493EDCB#TRMPBF

IC REG BUCK ADJ 1.2A 6DFN

Analog Devices Inc.

11,149
LT3493EDCB#TRMPBF

Datasheet

- 6-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3.6V Buck 36V 0.78V 34.2V 1.2A 750kHz - No - -40°C ~ 85°C (TA) Surface Mount 6-DFN (2x3)
LT3493EDCB#TRPBF

LT3493EDCB#TRPBF

IC REG BUCK ADJ 1.2A 6DFN

Analog Devices Inc.

3,385
LT3493EDCB#TRPBF

Datasheet

- 6-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3.6V Buck 36V 0.78V 34.2V 1.2A 750kHz - No - -40°C ~ 85°C (TA) Surface Mount 6-DFN (2x3)
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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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