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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
LTC3642IMS8E#PBF

LTC3642IMS8E#PBF

IC REG BUCK ADJ 50MA 8MSOP

Analog Devices Inc.

417
LTC3642IMS8E#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 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-MSOP-EP
LTC3642IDD#PBF

LTC3642IDD#PBF

IC REG BUCK ADJ 50MA 8DFN

Analog Devices Inc.

295
LTC3642IDD#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)
LTC3642IDD-5#PBF

LTC3642IDD-5#PBF

IC REG BUCK 5V 50MA 8DFN

Analog Devices Inc.

209
LTC3642IDD-5#PBF

Datasheet

- 8-WFDFN Exposed Pad Tube Active Step-Down Positive Fixed 1 4.5V Buck 45V 5V - 50mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-DFN (3x3)
LTC3642IMS8E-3.3#PBF

LTC3642IMS8E-3.3#PBF

IC REG BUCK 3.3V 50MA 8MSOP

Analog Devices Inc.

2,736
LTC3642IMS8E-3.3#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Fixed 1 4.5V Buck 45V 3.3V - 50mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-MSOP-EP
MAX764CPA+

MAX764CPA+

IC REG BUCK BOOST ADJ/-1V 8PDIP

Analog Devices Inc./Maxim Integrated

4,085
MAX764CPA+

Datasheet

- 8-DIP (0.300", 7.62mm) Tube Active Step-Up/Step-Down Negative Adjustable (Fixed) 1 3V Buck-Boost 16V -1V (-5V) -16V 260mA 300kHz - No - 0°C ~ 70°C (TA) Through Hole 8-PDIP
LT3971IDD#PBF

LT3971IDD#PBF

IC REG BUCK ADJ 1.2A 10DFN

Analog Devices Inc.

497
LT3971IDD#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 4.3V Buck 38V 1.19V 30V 1.2A 200kHz ~ 2MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
LTC3621HMS8E-25#PBF

LTC3621HMS8E-25#PBF

IC REG BUCK 5V 1A 8MSOP

Analog Devices Inc.

224
LTC3621HMS8E-25#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Fixed 1 2.7V Buck 17V 5V - 1A 2.25MHz - Yes - -40°C ~ 150°C (TJ) Surface Mount 8-MSOP-EP
LT3971IMSE-3.3#PBF

LT3971IMSE-3.3#PBF

IC REG BUCK 3.3V 1.2A 10MSOP

Analog Devices Inc.

168
LT3971IMSE-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 38V 3.3V - 1.2A 200kHz ~ 2MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-MSOP-EP
LT3663IMS8E-5#PBF

LT3663IMS8E-5#PBF

IC REG BUCK 5V 1.2A 8MSOP

Analog Devices Inc.

135
LT3663IMS8E-5#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Fixed 1 7.5V Buck 36V 5V - 1.2A 1MHz - No - -40°C ~ 125°C (TJ) Surface Mount 8-MSOP-EP
MAX766CPA+

MAX766CPA+

IC REG BUCK BOOST ADJ/-1V 8PDIP

Analog Devices Inc./Maxim Integrated

104
MAX766CPA+

Datasheet

- 8-DIP (0.300", 7.62mm) Tube Active Step-Up/Step-Down Negative Adjustable (Fixed) 1 3V Buck-Boost 16V -1V (-15V) -16V 105mA 300kHz - No - 0°C ~ 70°C (TA) Through Hole 8-PDIP
LTC3621HMS8E#PBF

LTC3621HMS8E#PBF

IC REG BUCK ADJ 1A 8MSOP

Analog Devices Inc.

103
LTC3621HMS8E#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 2.7V Buck 17V 0.6V 17V 1A 1MHz - Yes - -40°C ~ 150°C (TJ) Surface Mount 8-MSOP-EP
LTC3621HMS8E-3.3#PBF

LTC3621HMS8E-3.3#PBF

IC REG BUCK 3.3V 1A 8MSOP

Analog Devices Inc.

4,479
LTC3621HMS8E-3.3#PBF

Datasheet

- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Fixed 1 2.7V Buck 17V 3.3V - 1A 1MHz - Yes - -40°C ~ 150°C (TJ) Surface Mount 8-MSOP-EP
MAX619ESA+

MAX619ESA+

IC REG CHARGE PUMP 5V 50MA 8SOIC

Analog Devices Inc./Maxim Integrated

2,433
MAX619ESA+

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Up Positive Fixed 1 2V Charge Pump 3.6V 5V - 50mA 500kHz - No - -40°C ~ 85°C (TA) Surface Mount 8-SOIC
LTC3622IDE#PBF

LTC3622IDE#PBF

IC REG BUCK ADJ 1A DL 14DFN

Analog Devices Inc.

1,122
LTC3622IDE#PBF

Datasheet

- 14-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 2 2.7V Buck 17V 0.6V 17V 1A 1MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 14-DFN (4x3)
LTC3371EUHF#PBF

LTC3371EUHF#PBF

IC REG BUCK ADJ 2A QUAD 38QFN

Analog Devices Inc.

1,076
LTC3371EUHF#PBF

Datasheet

- 38-WFQFN Exposed Pad Tube Active Step-Down Positive Adjustable 4 2.7V Buck 5.5V 0.8V 5.5V 2A 2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 38-QFN (5x7)
LT3975EMSE#PBF

LT3975EMSE#PBF

IC REG BUCK ADJ 2.5A 16MSOP

Analog Devices Inc.

2,053
LT3975EMSE#PBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 4.3V Buck 42V 1.197V 40.74V 2.5A 200kHz ~ 2.25MHz - No - -40°C ~ 125°C (TJ) Surface Mount 16-MSOP-EP
LT3574IMS#PBF

LT3574IMS#PBF

IC REG FLYBACK 650MA 16MSOP

Analog Devices Inc.

1,533
LT3574IMS#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
LT3573IMSE#PBF

LT3573IMSE#PBF

IC REG FLYBACK 1.25A 16MSOP

Analog Devices Inc.

736
LT3573IMSE#PBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad Tube Active Step-Up/Step-Down Positive or Negative, Isolation Capable - 1 3V Flyback 40V - - 1.25A 40kHz ~ 1MHz - No - -40°C ~ 125°C (TA) Surface Mount 16-MSOP-EP
LTC3106EFE#PBF

LTC3106EFE#PBF

IC REG BUCK BOOST PROG 20TSSOP

Analog Devices Inc.

401
LTC3106EFE#PBF

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) 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-TSSOP-EP
LTC3417AEFE-2#PBF

LTC3417AEFE-2#PBF

IC REG BUCK ADJ 1A/1.5A 20TSSOP

Analog Devices Inc.

13,328
LTC3417AEFE-2#PBF

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 2 2.25V Buck 5.5V 0.8V 5V 1A, 1.5A 1.5MHz, 600kHz ~ 4MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 20-TSSOP-EP
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Frequently Asked Questions

Voltage Regulators - DC DC Switching Regulators Overview

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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