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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
LTC3631EDD-5#PBF

LTC3631EDD-5#PBF

IC REG BUCK 5V 100MA 8DFN

Analog Devices Inc.

718
LTC3631EDD-5#PBF

Datasheet

- 8-WFDFN Exposed Pad Tube Active Step-Down Positive or Negative Fixed 1 4.5V Buck 45V 5V - 100mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-DFN (3x3)
LTC1144CN8#PBF

LTC1144CN8#PBF

IC REG CHARG PUMP INV 50MA 8PDIP

Analog Devices Inc.

690
LTC1144CN8#PBF

Datasheet

- 8-DIP (0.300", 7.62mm) Tube Active Ratiometric Positive or Negative Fixed 1 2V Charge Pump 18V -Vin, 2Vin, Vin/2 - 50mA 4kHz ~ 10kHz - No - 0°C ~ 70°C (TA) Through Hole 8-PDIP
LTC3407AEDD-2#PBF

LTC3407AEDD-2#PBF

IC REG BUCK ADJ 800MA DL 10DFN

Analog Devices Inc.

628
LTC3407AEDD-2#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 2 2.5V Buck 5.5V 0.6V 5V 800mA 2.25MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 10-DFN (3x3)
LT3957EUHE#PBF

LT3957EUHE#PBF

IC REG BOOST CUK ADJ 5A 36QFN

Analog Devices Inc.

470
LT3957EUHE#PBF

Datasheet

- 36-WFQFN, 28 Leads, Exposed Pad Tube 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)
TPS53355DQPT

TPS53355DQPT

IC REG BUCK ADJ 30A 22LSON-CLIP

Texas Instruments

462
TPS53355DQPT

Datasheet

D-CAP™, Eco-Mode™ 22-PowerLFDFN Tape & Reel (TR) Active Step-Down Positive Adjustable 1 1.5V Buck 15V 0.6V 5.5V 30A 250kHz ~ 1MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 22-LSON-CLIP (6x5)
LT3957AEUHE#PBF

LT3957AEUHE#PBF

IC REG BOOST CUK ADJ 5A 36QFN

Analog Devices Inc.

183
LT3957AEUHE#PBF

Datasheet

- 36-WFQFN, 28 Leads, Exposed Pad Tube 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)
LTC3631EMS8E-5#PBF

LTC3631EMS8E-5#PBF

IC REG BUCK 5V 100MA 8MSOP

Analog Devices Inc.

136
LTC3631EMS8E-5#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 5V - 100mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 8-MSOP-EP
LTC3544EUD#PBF

LTC3544EUD#PBF

IC REG BUCK ADJ QUAD 16QFN

Analog Devices Inc.

4,156
LTC3544EUD#PBF

Datasheet

- 16-WFQFN Exposed Pad Tube Active Step-Down Positive Adjustable 4 2.25V Buck 5.5V 0.8V 5.5V 100mA, 200mA(2), 300mA 2.25MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 16-QFN (3x3)
LT1109ACS8-12#PBF

LT1109ACS8-12#PBF

IC REG BOOST 12V 2A 8SO

Analog Devices Inc.

1,199
LT1109ACS8-12#PBF

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Up Positive Fixed 1 2V Boost 9V 12V - 2A (Switch) 120kHz - No - 0°C ~ 70°C (TA) Surface Mount 8-SO
LTC1044ACS8#PBF

LTC1044ACS8#PBF

IC REG CHARGE PUMP INV 20MA 8SO

Analog Devices Inc.

790
LTC1044ACS8#PBF

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Ratiometric Positive or Negative Fixed 1 1.5V Charge Pump 12V -Vin, 2Vin, Vin/2 - 20mA 1kHz ~ 5kHz - No - 0°C ~ 70°C (TA) Surface Mount 8-SO
LT1109ACS8#PBF

LT1109ACS8#PBF

IC REG BOOST ADJ 2A 8SO

Analog Devices Inc.

450
LT1109ACS8#PBF

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Up Positive Adjustable 1 2V Boost 9V 1.25V 50V (Switch) 2A (Switch) 120kHz - No - 0°C ~ 70°C (TA) Surface Mount 8-SO
MAX15041ETE+

MAX15041ETE+

IC REG BUCK ADJ 3A 16TQFN

Analog Devices Inc./Maxim Integrated

1,594
MAX15041ETE+

Datasheet

- 16-WFQFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 4.5V Buck 28V 0.606V 25.2V 3A 350kHz - Yes - -40°C ~ 85°C (TA) Surface Mount 16-TQFN (3x3)
MPQ8645PGVT-0000-Z

MPQ8645PGVT-0000-Z

IC REG BUCK ADJ 30A 25TQFN

Monolithic Power Systems Inc.

1,378
MPQ8645PGVT-0000-Z

Datasheet

- 25-PowerWFQFN Tape & Reel (TR) Not For New Designs Step-Down Positive Adjustable 1 4V Buck 16V 0.6V 5.5V 30A 1MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 25-TQFN (4x5)
LTC3630AEMSE#TRPBF

LTC3630AEMSE#TRPBF

IC REG BUCK ADJ 500MA 16MSOP

Analog Devices Inc.

17,217
LTC3630AEMSE#TRPBF

Datasheet

- 16-TFSOP (0.118", 3.00mm Width), 12 Leads, Exposed Pad Tape & Reel (TR) Active Step-Down Positive or Negative Adjustable (Programmable) 1 4V Buck 76V 0.8V (1.8V, 3.3V, 5V) 76V 500mA - - Yes - -40°C ~ 125°C (TJ) Surface Mount 16-MSOP-EP
LT8330HDDB#TRMPBF

LT8330HDDB#TRMPBF

IC REG BOOST SEPIC ADJ 1A 8DFN

Analog Devices Inc.

9,856
LT8330HDDB#TRMPBF

Datasheet

- 8-WFDFN Exposed Pad Tape & Reel (TR) Active Step-Up, Step-Up/Step-Down Positive or Negative, Isolation Capable Adjustable 1 3V Boost, SEPIC 40V 1.6V, -0.8V 60V (Switch) 1A 2MHz - No - -40°C ~ 150°C (TJ) Surface Mount 8-DFN (3x2)
LTC3422EDD#PBF

LTC3422EDD#PBF

IC REG BOOST ADJ 1.5A 10DFN

Analog Devices Inc.

3,329
LTC3422EDD#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Up Positive Adjustable 1 0.5V Boost 4.5V 2.25V 5.25V 1.5A (Switch) 100kHz ~ 3MHz - Yes - -40°C ~ 85°C (TA) Surface Mount 10-DFN (3x3)
LT8300ES5#TRPBF

LT8300ES5#TRPBF

IC REG FLYBACK 260MA TSOT23-5

Analog Devices Inc.

1,270
LT8300ES5#TRPBF

Datasheet

- SOT-23-5 Thin, TSOT-23-5 Tape & Reel (TR) Active Step-Up/Step-Down Positive or Negative, Isolation Capable - 1 6V Flyback 100V - - 260mA 7.5kHz ~ 750kHz - No - -40°C ~ 125°C (TJ) Surface Mount TSOT-23-5
LT3437HFE#PBF

LT3437HFE#PBF

IC REG BUCK ADJ 500MA 16TSSOP

Analog Devices Inc.

171
LT3437HFE#PBF

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 3.5V Buck 60V 1.25V 57V 500mA (Switch) 200kHz - No - -40°C ~ 140°C (TJ) Surface Mount 16-TSSOP-EP
LT1173CS8#PBF

LT1173CS8#PBF

IC REG BUCK BOOST ADJ 1.5A 8SO

Analog Devices Inc.

367
LT1173CS8#PBF

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Up, Step-Down Positive or Negative Adjustable 1 2V Buck, Boost 30V 1.245V 50V (Switch) 1.5A (Switch) 23kHz - No - 0°C ~ 70°C (TA) Surface Mount 8-SO
MAX636ACSA+

MAX636ACSA+

IC REG BUCK ADJ/-1.31V 8SOIC

Analog Devices Inc./Maxim Integrated

251
MAX636ACSA+

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Down/Inverted Negative Adjustable (Fixed) 1 2.3V Buck 16.5V -1.31V (-12V) -12V 200mA 50kHz - No - 0°C ~ 70°C (TA) Surface Mount 8-SOIC
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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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