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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
LT3990IMSE-3.3#PBF

LT3990IMSE-3.3#PBF

IC REG BUCK 3.3V 350MA 16MSOP

Analog Devices Inc.

276
LT3990IMSE-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
LT1614CS8#PBF

LT1614CS8#PBF

IC REG CUK ADJ 750MA 8SO

Analog Devices Inc.

247
LT1614CS8#PBF

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Up, Step-Up/Step-Down Negative Adjustable 1 1V Cuk 6V -1.24V -24V 750mA (Switch) 600kHz - No - 0°C ~ 70°C (TA) Surface Mount 8-SO
LT8302IS8E#WPBF

LT8302IS8E#WPBF

IC REG FLYBACK 3.6A 8SOIC

Analog Devices Inc.

4,484
LT8302IS8E#WPBF

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Exposed Pad Tube Active Step-Up/Step-Down Positive or Negative, Isolation Capable - 1 3V Flyback 42V - 65V (Switch) 3.6A (Switch) Down to 12kHz AEC-Q100 No Automotive -40°C ~ 125°C (TJ) Surface Mount 8-SOIC-EP
LTC3315AJV#WTRMPBF

LTC3315AJV#WTRMPBF

IC REG BUCK ADJ 2A/2A DL 12LQFN

Analog Devices Inc.

129
LTC3315AJV#WTRMPBF

Datasheet

- 12-VFQFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 2 2.25V Buck 5.5V 0.5V 5.5V 2A, 2A 2MHz AEC-Q100 Yes Automotive -40°C ~ 150°C (TJ) Surface Mount 12-LQFN (2x2)
LT3154AV#PBF

LT3154AV#PBF

IC REG BUCK BOOST ADJ 5A 16LQFN

Analog Devices Inc.

1,338
LT3154AV#PBF

Datasheet

- 16-VFQFN Exposed Pad Tray Active Step-Up/Step-Down Positive Adjustable 1 1.8V Buck-Boost 5.5V 1.8V 5.5V 5A 400kHz ~ 4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 16-LQFN (3x3)
LTC3441EDE#PBF

LTC3441EDE#PBF

IC REG BUCK BOOST ADJ 1.2A 12DFN

Analog Devices Inc.

2,757
LTC3441EDE#PBF

Datasheet

- 12-WFDFN Exposed Pad Tube Active Step-Up/Step-Down Positive Adjustable 1 2.4V Buck-Boost 5.5V 2.4V 5.25V 1.2A 1MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 12-DFN (4x3)
MAX25240AFFD/VY+T

MAX25240AFFD/VY+T

IC REG BUCK BST ADJ/3V 22FC2QFN

Analog Devices Inc./Maxim Integrated

1,972
MAX25240AFFD/VY+T

Datasheet

- 22-PowerWFQFN Tape & Reel (TR) Active Step-Up/Step-Down Positive Adjustable (Fixed) 1 2V Buck-Boost 36V 3V (10.5V) 20V 6A 2.1MHz AEC-Q100 Yes Automotive -40°C ~ 125°C Surface Mount 22-FC2QFN (4.25x4.25)
LTC3626IUDC#PBF

LTC3626IUDC#PBF

IC REG BUCK ADJ 2.5A 20QFN

Analog Devices Inc.

1,166
LTC3626IUDC#PBF

Datasheet

- 20-WFQFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 3.6V Buck 20V 0.6V 19.4V 2.5A 500KHz ~ 3MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-QFN (3x4)
LTC3106EUDC#PBF

LTC3106EUDC#PBF

IC REG BUCK BST PROG 300MA 20QFN

Analog Devices Inc.

295
LTC3106EUDC#PBF

Datasheet

- 20-WFQFN Exposed Pad Tube Active Step-Up/Step-Down Positive Programmable 1 0.85V Buck-Boost 6V 1.8V, 2.2V, 3.3V, 5V - 300mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-QFN (3x4)
LT3991EDD#PBF

LT3991EDD#PBF

IC REG BUCK ADJ 1.2A 10DFN

Analog Devices Inc.

13,132
LT3991EDD#PBF

Datasheet

- 10-WFDFN 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-DFN (3x3)
LTC3631EDD#TRPBF

LTC3631EDD#TRPBF

IC REG BUCK ADJ 100MA 8DFN

Analog Devices Inc.

6,624
LTC3631EDD#TRPBF

Datasheet

- 8-WFDFN 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-DFN (3x3)
LTC3631EMS8E-3.3#TRPBF

LTC3631EMS8E-3.3#TRPBF

IC REG BUCK 3.3V 100MA 8MSOP

Analog Devices Inc.

5,912
LTC3631EMS8E-3.3#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 3.3V - 100mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-MSOP-EP
LTC3568EDD#TRPBF

LTC3568EDD#TRPBF

IC REG BUCK ADJ 1.8A 10DFN

Analog Devices Inc.

5,526
LTC3568EDD#TRPBF

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 2.25V Buck 5.5V 0.8V 5V 1.8A Up to 4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LT3957AEUHE#TRPBF

LT3957AEUHE#TRPBF

IC REG BOOST CUK ADJ 5A 36QFN

Analog Devices Inc.

3,724
LT3957AEUHE#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)
LT3991EMSE-3.3#PBF

LT3991EMSE-3.3#PBF

IC REG BUCK 3.3V 1.2A 10MSOP

Analog Devices Inc.

3,681
LT3991EMSE-3.3#PBF

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad Tube 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
LTC3631EMS8E-3.3#PBF

LTC3631EMS8E-3.3#PBF

IC REG BUCK 3.3V 100MA 8MSOP

Analog Devices Inc.

2,698
LTC3631EMS8E-3.3#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 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-MSOP-EP
LTC3624EDD-2#TRPBF

LTC3624EDD-2#TRPBF

IC REG BUCK ADJ 2A 8DFN

Analog Devices Inc.

1,841
LTC3624EDD-2#TRPBF

Datasheet

- 8-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 2.7V Buck 17V 0.6V 17V 2A 2.25MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-DFN (3x3)
LT3509EDE#TRPBF

LT3509EDE#TRPBF

IC REG BUCK ADJ 700MA DL 14DFN

Analog Devices Inc.

1,608
LT3509EDE#TRPBF

Datasheet

- 14-WFDFN Exposed Pad Tape & Reel (TR) 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)
LTC3568EDD#PBF

LTC3568EDD#PBF

IC REG BUCK ADJ 1.8A 10DFN

Analog Devices Inc.

1,168
LTC3568EDD#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 2.25V Buck 5.5V 0.8V 5V 1.8A Up to 4MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LTC3388EDD-1#TRPBF

LTC3388EDD-1#TRPBF

IC REG BUCK PROG 50MA 10DFN

Analog Devices Inc.

1,017
LTC3388EDD-1#TRPBF

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Programmable 1 2.7V Buck 20V 1.2V, 1.5V, 1.8V, 2.5V - 50mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (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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