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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
LTC3530EMS#PBF

LTC3530EMS#PBF

IC REG BUCK BST ADJ 600MA 10MSOP

Analog Devices Inc.

2,894
LTC3530EMS#PBF

Datasheet

- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Tube Active Step-Up/Step-Down Positive Adjustable 1 1.8V Buck-Boost 5.5V 1.8V 5.25V 600mA 300kHz ~ 2MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 10-MSOP
LT3437IDD#PBF

LT3437IDD#PBF

IC REG BUCK ADJ 500MA 10DFN

Analog Devices Inc.

1,490
LT3437IDD#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 3V Buck 60V 1.25V 57V 500mA (Switch) 200kHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LT1938EDD#TRPBF

LT1938EDD#TRPBF

IC REG BUCK ADJ 2.2A 10DFN

Analog Devices Inc.

7,229
LT1938EDD#TRPBF

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 3.6V Buck 25V 1.265V 20V 2.2A 300kHz ~ 3MHz - No - 0°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LT3971EMSE-5#TRPBF

LT3971EMSE-5#TRPBF

IC REG BUCK 5V 1.2A 10MSOP

Analog Devices Inc.

3,647
LT3971EMSE-5#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 38V 5V - 1.2A 200kHz ~ 2MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-MSOP-EP
LT8619EMSE#TRPBF

LT8619EMSE#TRPBF

IC REG BUCK ADJ 1.2A 16MSOP

Analog Devices Inc.

3,082
LT8619EMSE#TRPBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width) 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 16-MSOP-EP
LT3971EDD-3.3#PBF

LT3971EDD-3.3#PBF

IC REG BUCK 3.3V 1.2A 10DFN

Analog Devices Inc.

1,035
LT3971EDD-3.3#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Fixed 1 4.3V Buck 38V 3.3V - 1.2A 200kHz ~ 2MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LT8619EMSE-5#PBF

LT8619EMSE-5#PBF

IC REG BUCK 5V 1.2A 16MSOP

Analog Devices Inc.

227
LT8619EMSE-5#PBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Fixed 1 3V Buck 60V 5V - 1.2A 300kHz ~ 2.2MHz - Yes - 0°C ~ 125°C (TJ) Surface Mount 16-MSOP-EP
LT3973EDD#PBF

LT3973EDD#PBF

IC REG BUCK ADJ 750MA 10DFN

Analog Devices Inc.

1,622
LT3973EDD#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 4.2V Buck 42V 1.21V 24V 750mA 195kHz ~ 2.15MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LT8610AEMSE-5#PBF

LT8610AEMSE-5#PBF

IC REG BUCK 5V 3.5A 16MSOP

Analog Devices Inc.

8,076
LT8610AEMSE-5#PBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Fixed 1 3.4V Buck 42V 5V - 3.5A 200kHz ~ 2.2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 16-MSOP-EP
LT3574EMS#PBF

LT3574EMS#PBF

IC REG FLYBACK 650MA 16MSOP

Analog Devices Inc.

4,477
LT3574EMS#PBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width) Tube Active Step-Up/Step-Down Positive or Negative, Isolation Capable - 1 3V Flyback 40V - - 650mA 40kHz ~ 1MHz - No - -40°C ~ 125°C (TA) Surface Mount 16-MSOP
MAX20730EPL+T

MAX20730EPL+T

IC REG BUCK ADJ 25A 15FCQFN

Analog Devices Inc./Maxim Integrated

5,391
MAX20730EPL+T

Datasheet

- 15-VFQFN, FCQFN Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 16V 0.65V 5.5V 25A 400kHz ~ 900kHz - No - -40°C ~ 125°C (TJ) Surface Mount 15-FCQFN (6x4.15)
ADP5071AREZ-R7

ADP5071AREZ-R7

IC REG BST SEPIC ADJ DL 20TSSOP

Analog Devices Inc.

994
ADP5071AREZ-R7

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad Tape & Reel (TR) Active Step-Up, Step-Up/Step-Down Positive and Negative (Dual Rail) Adjustable 2 2.85V Boost, SEPIC 15V 0.8V, 1.6V ±39V 1.2A, 2A 1.2MHz, 2.4MHz - No - -40°C ~ 125°C (TJ) Surface Mount 20-TSSOP-EP
LT3686IDD#PBF

LT3686IDD#PBF

IC REG BUCK ADJ 1.2A 10DFN

Analog Devices Inc.

929
LT3686IDD#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 3.6V Buck 37V 0.8V 37V 1.2A 300kHz ~ 2.5MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
ADP5071AREZ

ADP5071AREZ

IC REG BST SEPIC ADJ DL 20TSSOP

Analog Devices Inc.

159
ADP5071AREZ

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Up, Step-Up/Step-Down Positive and Negative (Dual Rail) Adjustable 2 2.85V Boost, SEPIC 15V 0.8V, 1.6V ±39V 1.2A, 2A 1.2MHz, 2.4MHz - No - -40°C ~ 125°C (TJ) Surface Mount 20-TSSOP-EP
LT3686AIDD#PBF

LT3686AIDD#PBF

IC REG BUCK ADJ 1.2A 10DFN

Analog Devices Inc.

1,974
LT3686AIDD#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 3.6V Buck 37V 0.8V 37V 1.2A 300kHz ~ 2.5MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LTC3644EY#PBF

LTC3644EY#PBF

IC REG BUCK ADJ 1.25A QUAD 36BGA

Analog Devices Inc.

4,494
LTC3644EY#PBF

Datasheet

- 36-FBGA Tray Active Step-Down Positive Adjustable 4 2.7V Buck 17V 0.6V 17V 1.25A 1MHz - Yes - -40°C ~ 85°C (TJ) Surface Mount 36-BGA (5x5)
LTC3621IDCB-23.3#TRMPBF

LTC3621IDCB-23.3#TRMPBF

IC REG BUCK 3.3V 1A 6DFN

Analog Devices Inc.

4,725
LTC3621IDCB-23.3#TRMPBF

Datasheet

- 6-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Fixed 1 2.7V Buck 17V 3.3V - 1A 2.25MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 6-DFN (2x3)
LTC3621IDCB#TRMPBF

LTC3621IDCB#TRMPBF

IC REG BUCK ADJ 1A 6DFN

Analog Devices Inc.

4,553
LTC3621IDCB#TRMPBF

Datasheet

- 6-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 2.7V Buck 17V 0.6V 17V 1A 1MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 6-DFN (2x3)
LTC3621IDCB-3.3#TRMPBF

LTC3621IDCB-3.3#TRMPBF

IC REG BUCK 3.3V 1A 6DFN

Analog Devices Inc.

1,388
LTC3621IDCB-3.3#TRMPBF

Datasheet

- 6-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Fixed 1 2.7V Buck 17V 3.3V - 1A 1MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 6-DFN (2x3)
LTC3621IDCB-2#TRMPBF

LTC3621IDCB-2#TRMPBF

IC REG BUCK ADJ 1A 6DFN

Analog Devices Inc.

1,108
LTC3621IDCB-2#TRMPBF

Datasheet

- 6-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Down Positive Adjustable 1 2.7V Buck 17V 0.6V 17V 1A 2.25MHz - Yes - -40°C ~ 125°C (TJ) 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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