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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
LT3690IUFE#PBF

LT3690IUFE#PBF

IC REG BUCK ADJ 4A 26QFN

Analog Devices Inc.

655
LT3690IUFE#PBF

Datasheet

- 26-WFQFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 3.9V Buck 36V 0.8V 20V 4A 138kHz ~ 1.5MHz - No - -40°C ~ 125°C (TJ) Surface Mount 26-QFN (4x6)
LT1534IS-1#PBF

LT1534IS-1#PBF

IC REG BOOST CUK ADJ 2A 16SO

Analog Devices Inc.

1,198
LT1534IS-1#PBF

Datasheet

- 16-SOIC (0.154", 3.90mm Width) Tube Active Step-Up, Step-Up/Step-Down Positive or Negative Adjustable 1 2.7V Boost, Cuk, Flyback 23V 1.25V 35V (Switch) 2A (Switch) 20kHz ~ 250kHz - No - -40°C ~ 125°C (TJ) Surface Mount 16-SO
LTC3115EFE-2#PBF

LTC3115EFE-2#PBF

IC REG BUCK BOOST ADJ 20TSSOP

Analog Devices Inc.

100
LTC3115EFE-2#PBF

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Up/Step-Down Positive Adjustable 1 2.2V Buck-Boost 40V 2.7V 40V 800mA, 2A 100kHz ~ 2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-TSSOP-EP
LT1172HVIQ#PBF

LT1172HVIQ#PBF

IC REG BCK BST ADJ 1.25A DDPAK-5

Analog Devices Inc.

4,215
LT1172HVIQ#PBF

Datasheet

- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA Tube Active Step-Up, Step-Down, Step-Up/Step-Down Positive or Negative Adjustable 1 3V Buck, Boost, Cuk, Flyback, Forward Converter 60V 1.244V 75V (Switch) 1.25A (Switch) 100kHz - No - -40°C ~ 100°C (TJ) Surface Mount DDPAK-5
LT1374CR#TRPBF

LT1374CR#TRPBF

IC REG BUCK SEPIC ADJ 4.5A DDPAK

Analog Devices Inc.

887
LT1374CR#TRPBF

Datasheet

- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA Tape & Reel (TR) Active Step-Down Positive Adjustable 1 5V Buck, SEPIC 25V 2.42V 21.5V 4.5A (Switch) 500kHz - No - 0°C ~ 125°C (TJ) Surface Mount DDPAK-7
LT1171CQ#PBF

LT1171CQ#PBF

IC REG BUCK BST ADJ 2.5A DDPAK-5

Analog Devices Inc.

151
LT1171CQ#PBF

Datasheet

- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA Tube Active Step-Up, Step-Down, Step-Up/Step-Down Positive or Negative Adjustable 1 3V Buck, Boost, Cuk, Flyback, Forward Converter 40V 1.244V 65V (Switch) 2.5A (Switch) 100kHz - No - 0°C ~ 100°C (TJ) Surface Mount DDPAK-5
LT1941EFE#PBF

LT1941EFE#PBF

IC REG BUCK BST ADJ TRPL 28TSSOP

Analog Devices Inc.

370
LT1941EFE#PBF

Datasheet

- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Up, Step-Down, Step-Up/Step-Down Positive or Negative Adjustable 3 3.5V Buck, Boost, SEPIC 25V 0.628V 25V, 40V (Switch) 1.5A (Switch), 2A (Switch), 3A (Switch) 1.1MHz - No - 0°C ~ 70°C (TA) Surface Mount 28-TSSOP-EP
LT3434EFE#PBF

LT3434EFE#PBF

IC REG BUCK ADJ 3A 16TSSOP

Analog Devices Inc.

356
LT3434EFE#PBF

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 3V Buck 60V 1.25V 55.2V 3A (Switch) 200kHz - No - 0°C ~ 125°C (TJ) Surface Mount 16-TSSOP-EP
MAX1709EUI+

MAX1709EUI+

IC REG BOOST ADJ 7.5A 28TSSOP

Analog Devices Inc./Maxim Integrated

110
MAX1709EUI+

Datasheet

- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Up Positive Adjustable (Programmable) 1 0.7V Boost 5V 2.5V (3.3V, 5V) 5.5V 7.5A (Switch) 350kHz ~ 1MHz - No - -40°C ~ 85°C (TA) Surface Mount 28-TSSOP-EP
LTC3115IDHD-2#PBF

LTC3115IDHD-2#PBF

IC REG BUCK BOOST ADJ 16DFN

Analog Devices Inc.

2,339
LTC3115IDHD-2#PBF

Datasheet

- 16-WFDFN Exposed Pad Tube Active Step-Up/Step-Down Positive Adjustable 1 2.2V Buck-Boost 40V 2.7V 40V 800mA, 2A 100kHz ~ 2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 16-DFN (5x4)
LTC3649EFE#PBF

LTC3649EFE#PBF

IC REG BUCK ADJ 4A 28TSSOP

Analog Devices Inc.

822
LTC3649EFE#PBF

Datasheet

- 28-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 3.1V Buck 60V 0V 55V 4A 1MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 28-TSSOP-EP
LT1076IR#PBF

LT1076IR#PBF

IC REG BUCK BOOST ADJ 2A DDPAK-7

Analog Devices Inc.

148
LT1076IR#PBF

Datasheet

- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA Tube Active Step-Up, Step-Down, Step-Up/Step-Down Positive or Negative Adjustable 1 8V Buck, Boost, Flyback 45V 2.5V 35V 2A (Switch) 100kHz - No - -40°C ~ 85°C (TA) Surface Mount DDPAK-7
MAX20734EPL+T

MAX20734EPL+T

IC REG BUCK ADJ 40A 15FCQFN

Analog Devices Inc./Maxim Integrated

4,706
MAX20734EPL+T

Datasheet

- 15-VFQFN, FCQFN Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 16V 0.6V 5.5V 40A 400kHz ~ 900kHz - No - -40°C ~ 125°C (TJ) Surface Mount 15-FCQFN (9x4.15)
LT1374HVCFE#PBF

LT1374HVCFE#PBF

IC REG BUCK SEPIC ADJ 16TSSOP

Analog Devices Inc.

692
LT1374HVCFE#PBF

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 5V Buck, SEPIC 32V 2.42V 27.52V 4.5A (Switch) 500kHz - No - 0°C ~ 125°C (TJ) Surface Mount 16-TSSOP-EP
LTC3115IFE-2#PBF

LTC3115IFE-2#PBF

IC REG BUCK BOOST ADJ 20TSSOP

Analog Devices Inc.

133
LTC3115IFE-2#PBF

Datasheet

- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Up/Step-Down Positive Adjustable 1 2.2V Buck-Boost 40V 2.7V 40V 800mA, 2A 100kHz ~ 2MHz - Yes - -40°C ~ 125°C (TJ) Surface Mount 20-TSSOP-EP
LT8646SEV#WPBF

LT8646SEV#WPBF

IC REG BUCK ADJ 8A 32LQFN

Analog Devices Inc.

514
LT8646SEV#WPBF

Datasheet

Silent Switcher®2 32-TFQFN Exposed Pad Tray Active Step-Down Positive Adjustable 1 3.4V Buck 65V 0.97V 65V 8A 200kHz ~ 2.2MHz AEC-Q100 Yes Automotive -40°C ~ 125°C (TJ) Surface Mount 32-LQFN (6x4)
LT1374HVCR#TRPBF

LT1374HVCR#TRPBF

IC REG BUCK SEPIC ADJ 4.5A DDPAK

Analog Devices Inc.

5,620
LT1374HVCR#TRPBF

Datasheet

- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA Tape & Reel (TR) Active Step-Down Positive Adjustable 1 5V Buck, SEPIC 32V 2.42V 27.52V 4.5A (Switch) 500kHz - No - 0°C ~ 125°C (TJ) Surface Mount DDPAK-7
LT1374HVCR#PBF

LT1374HVCR#PBF

IC REG BUCK SEPIC ADJ 4.5A DDPAK

Analog Devices Inc.

2,288
LT1374HVCR#PBF

Datasheet

- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA Tube Active Step-Down Positive Adjustable 1 5V Buck, SEPIC 32V 2.42V 27.52V 4.5A (Switch) 500kHz - No - 0°C ~ 125°C (TJ) Surface Mount DDPAK-7
LT1270CT#PBF

LT1270CT#PBF

IC REG BUCK BOOST ADJ 8A TO220-5

Analog Devices Inc.

3,492
LT1270CT#PBF

Datasheet

- TO-220-5 Tube Active Step-Up, Step-Down, Step-Up/Step-Down Positive or Negative Adjustable 1 3.5V Buck, Boost, Flyback 30V 1.244V 60V (Switch) 8A (Switch) 60kHz - No - 0°C ~ 125°C (TJ) Through Hole TO-220-5
LT3430IFE#PBF

LT3430IFE#PBF

IC REG BUCK SEPIC ADJ 3A 16TSSOP

Analog Devices Inc.

144
LT3430IFE#PBF

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 1 5.5V Buck, SEPIC 60V 1.219V 57.6V 3A 200kHz - No - -40°C ~ 125°C (TJ) Surface Mount 16-TSSOP-EP
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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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