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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
LTC3624EDD#PBF

LTC3624EDD#PBF

IC REG BUCK ADJ 2A 8DFN

Analog Devices Inc.

9,298
LTC3624EDD#PBF

Datasheet

- 8-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 2.7V Buck 17V 0.6V 17V 2A 1MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-DFN (3x3)
LT3991EDD#TRPBF

LT3991EDD#TRPBF

IC REG BUCK ADJ 1.2A 10DFN

Analog Devices Inc.

7,986
LT3991EDD#TRPBF

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.3V Buck 55V 1.19V 30V 1.2A 200kHz ~ 2MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LTC3388EDD-3#TRPBF

LTC3388EDD-3#TRPBF

IC REG BUCK PROG 50MA 10DFN

Analog Devices Inc.

7,542
LTC3388EDD-3#TRPBF

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Programmable 1 2.7V Buck 20V 2.8V, 3V, 3.3V, 5V - 50mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LT3991EMSE-3.3#TRPBF

LT3991EMSE-3.3#TRPBF

IC REG BUCK 3.3V 1.2A 10MSOP

Analog Devices Inc.

7,498
LT3991EMSE-3.3#TRPBF

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Fixed 1 4.3V Buck 55V 3.3V - 1.2A 200kHz ~ 2MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-MSOP-EP
LTC3388EMSE-3#TRPBF

LTC3388EMSE-3#TRPBF

IC REG BUCK PROG 50MA 10MSOP

Analog Devices Inc.

7,154
LTC3388EMSE-3#TRPBF

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Programmable 1 2.7V Buck 20V 2.8V, 3V, 3.3V, 5V - 50mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 10-MSOP-EP
LT3991EMSE#TRPBF

LT3991EMSE#TRPBF

IC REG BUCK ADJ 1.2A 10MSOP

Analog Devices Inc.

6,187
LT3991EMSE#TRPBF

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.3V Buck 55V 1.19V 30V 1.2A 200kHz ~ 2MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-MSOP-EP
LTC3624EDD#TRPBF

LTC3624EDD#TRPBF

IC REG BUCK ADJ 2A 8DFN

Analog Devices Inc.

5,488
LTC3624EDD#TRPBF

Datasheet

- 8-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 2.7V Buck 17V 0.6V 17V 2A 1MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-DFN (3x3)
LTC3129EMSE#TRPBF

LTC3129EMSE#TRPBF

IC REG BUCK BST ADJ 200MA 16MSOP

Analog Devices Inc.

5,402
LTC3129EMSE#TRPBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad Tape & Reel (TR) Active Step-Up/Step-Down Positive Adjustable 1 1.92V Buck-Boost 15V 1.4V 15.75V 200mA 1.2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 16-MSOP-EP
LT3682EDD#TRPBF

LT3682EDD#TRPBF

IC REG BUCK ADJ 1A 12DFN

Analog Devices Inc.

5,155
LT3682EDD#TRPBF

Datasheet

- 12-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3.6V Buck 36V 0.8V 20V 1A 250kHz ~ 2.2MHz - No - -40°C ~ 125°C (TJ) Surface Mount 12-DFN (3x3)
LTC3631EMS8E#PBF

LTC3631EMS8E#PBF

IC REG BUCK ADJ 100MA 8MSOP

Analog Devices Inc.

4,174
LTC3631EMS8E#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive or Negative Adjustable 1 4.5V Buck 45V 0.8V 45V 100mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-MSOP-EP
LT8331EMSE#TRPBF

LT8331EMSE#TRPBF

IC REG BOOST FLYBACK ADJ 16MSOP

Analog Devices Inc.

4,095
LT8331EMSE#TRPBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad Tape & Reel (TR) Active Step-Up, Step-Up/Step-Down Positive or Negative, Isolation Capable Adjustable 1 4.5V Boost, Flyback, SEPIC 100V 1.6V, -0.8V 140V (Switch) 500mA (Switch) 100kHz ~ 500kHz - No - -40°C ~ 125°C (TJ) Surface Mount 16-MSOP-EP
LTC3631EDD-3.3#PBF

LTC3631EDD-3.3#PBF

IC REG BUCK 3.3V 100MA 8DFN

Analog Devices Inc.

4,039
LTC3631EDD-3.3#PBF

Datasheet

- 8-WFDFN Exposed Pad Tube Active Step-Down Positive or Negative Fixed 1 4.5V Buck 45V 3.3V - 100mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-DFN (3x3)
LTC3129EUD-1#TRPBF

LTC3129EUD-1#TRPBF

IC REG BUCK BST PROG 200MA 16QFN

Analog Devices Inc.

3,249
LTC3129EUD-1#TRPBF

Datasheet

- 16-WFQFN Exposed Pad Tape & Reel (TR) Active Step-Up/Step-Down Positive Programmable 1 1.92V Buck-Boost 15V 2.5V 15V 200mA 1.2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 16-QFN (3x3)
LTC3129EUD#PBF

LTC3129EUD#PBF

IC REG BUCK BST ADJ 200MA 16QFN

Analog Devices Inc.

3,135
LTC3129EUD#PBF

Datasheet

- 16-WFQFN Exposed Pad Tube Active Step-Up/Step-Down Positive Adjustable 1 1.92V Buck-Boost 15V 1.4V 15.75V 200mA 1.2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 16-QFN (3x3)
LTC3631EMS8E#TRPBF

LTC3631EMS8E#TRPBF

IC REG BUCK ADJ 100MA 8MSOP

Analog Devices Inc.

2,722
LTC3631EMS8E#TRPBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive or Negative Adjustable 1 4.5V Buck 45V 0.8V 45V 100mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-MSOP-EP
LTC3631EMS8E-5#TRPBF

LTC3631EMS8E-5#TRPBF

IC REG BUCK 5V 100MA 8MSOP

Analog Devices Inc.

2,709
LTC3631EMS8E-5#TRPBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tape & Reel (TR) Active Step-Down Positive or Negative Fixed 1 4.5V Buck 45V 5V - 100mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-MSOP-EP
LT3957EUHE#TRPBF

LT3957EUHE#TRPBF

IC REG BOOST CUK ADJ 5A 36QFN

Analog Devices Inc.

2,650
LT3957EUHE#TRPBF

Datasheet

- 36-WFQFN, 28 Leads, Exposed Pad Tape & Reel (TR) Active Step-Up, Step-Up/Step-Down Positive or Negative Adjustable 1 3V Boost, Cuk, Flyback, SEPIC 40V 1.6V 40V (Switch) 5A (Switch) 100kHz ~ 1MHz - No - -40°C ~ 125°C (TJ) Surface Mount 36-QFN (5x6)
LT3509EDE#PBF

LT3509EDE#PBF

IC REG BUCK ADJ 700MA DL 14DFN

Analog Devices Inc.

2,547
LT3509EDE#PBF

Datasheet

- 14-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 2 3.6V Buck 36V 0.8V 34.2V 700mA 260kHz ~ 2.15MHz - No - -40°C ~ 125°C (TJ) Surface Mount 14-DFN (4x3)
LT3991EMSE#PBF

LT3991EMSE#PBF

IC REG BUCK ADJ 1.2A 10MSOP

Analog Devices Inc.

2,320
LT3991EMSE#PBF

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 4.3V Buck 55V 1.19V 30V 1.2A 200kHz ~ 2MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-MSOP-EP
LTC3129EUD-1#PBF

LTC3129EUD-1#PBF

IC REG BUCK BST PROG 200MA 16QFN

Analog Devices Inc.

1,996
LTC3129EUD-1#PBF

Datasheet

- 16-WFQFN Exposed Pad Tube Active Step-Up/Step-Down Positive Programmable 1 1.92V Buck-Boost 15V 2.5V 15V 200mA 1.2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 16-QFN (3x3)
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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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