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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
LT3575EFE#TRPBF

LT3575EFE#TRPBF

IC REG FLYBACK 2.5A 16TSSOP

Analog Devices Inc.

2,762
LT3575EFE#TRPBF

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad Tape & Reel (TR) Active Step-Up/Step-Down Positive or Negative, Isolation Capable - 1 3V Flyback 40V - - 2.5A 40kHz ~ 1MHz - No - -40°C ~ 125°C (TA) Surface Mount 16-TSSOP-EP
LT3575EFE#PBF

LT3575EFE#PBF

IC REG FLYBACK 2.5A 16TSSOP

Analog Devices Inc.

1,000
LT3575EFE#PBF

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Up/Step-Down Positive or Negative, Isolation Capable - 1 3V Flyback 40V - - 2.5A 40kHz ~ 1MHz - No - -40°C ~ 125°C (TA) Surface Mount 16-TSSOP-EP
LTC3422EDD#TRPBF

LTC3422EDD#TRPBF

IC REG BOOST ADJ 1.5A 10DFN

Analog Devices Inc.

6,813
LTC3422EDD#TRPBF

Datasheet

- 10-WFDFN Exposed Pad Tape & Reel (TR) 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)
LTC3630AEDHC#TRPBF

LTC3630AEDHC#TRPBF

IC REG BUCK ADJ 500MA 16DFN

Analog Devices Inc.

4,790
LTC3630AEDHC#TRPBF

Datasheet

- 16-WFDFN 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-DFN (5x3)
LTC3630AEDHC#PBF

LTC3630AEDHC#PBF

IC REG BUCK ADJ 500MA 16DFN

Analog Devices Inc.

417
LTC3630AEDHC#PBF

Datasheet

- 16-WFDFN Exposed Pad Tube 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-DFN (5x3)
ISL95338HRTZ-T7A

ISL95338HRTZ-T7A

IC REG BUCK BOOST ADJ 32QFN

Renesas Electronics Corporation

1,668
ISL95338HRTZ-T7A

Datasheet

- 32-VFQFN Exposed Pad Tape & Reel (TR) Active Step-Up, Step-Down, Step-Up/Step-Down Positive Adjustable 1 3.8V Buck, Boost, Buck-Boost 24V 4V 20V - Up to 1MHz - No - -10°C ~ 100°C (TA) Surface Mount 32-QFN (4x4)
LT1303CN8-5#PBF

LT1303CN8-5#PBF

IC REG BOOST 5V 750MA 8PDIP

Analog Devices Inc.

100
LT1303CN8-5#PBF

Datasheet

- 8-DIP (0.300", 7.62mm) Tube Active Step-Up Positive Fixed 1 1.8V Boost 10V 5V - 750mA (Switch) 155kHz - No - 0°C ~ 70°C (TA) Through Hole 8-PDIP
MAX680EPA+

MAX680EPA+

IC REG CHARGE PUMP 2VIN DL 8PDIP

Analog Devices Inc./Maxim Integrated

4,274
MAX680EPA+

Datasheet

- 8-DIP (0.300", 7.62mm) Tube Active Ratiometric Positive and Negative (Dual Rail) Fixed 2 2V Charge Pump 6V ±2Vin - 10mA 8kHz - No - -40°C ~ 85°C (TA) Through Hole 8-PDIP
LT1173CS8-5#PBF

LT1173CS8-5#PBF

IC REG BUCK BOOST 5V 1.5A 8SO

Analog Devices Inc.

153
LT1173CS8-5#PBF

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Up, Step-Down Positive or Negative Fixed 1 2V Buck, Boost 30V 5V - 1.5A (Switch) 23kHz - No - 0°C ~ 70°C (TA) Surface Mount 8-SO
LT1111CS8-5#PBF

LT1111CS8-5#PBF

IC REG BUCK BOOST 5V 1.5A 8SO

Analog Devices Inc.

4,428
LT1111CS8-5#PBF

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Up, Step-Down Positive or Negative Fixed 1 2V Buck, Boost 30V 5V - 1.5A (Switch) 72kHz - No - 0°C ~ 70°C (TA) Surface Mount 8-SO
MAX641ACSA+

MAX641ACSA+

IC REG BOOST ADJ/1.31V 8SOIC

Analog Devices Inc./Maxim Integrated

4,069
MAX641ACSA+

Datasheet

- 8-SOIC (0.154", 3.90mm Width) Tube Active Step-Up Positive Adjustable (Fixed) 1 2V Boost 16.5V 1.31V (5V) 18V (Switch) 450mA (Switch) 45kHz - No - 0°C ~ 70°C (TA) Surface Mount 8-SOIC
TPS544B20RVFT

TPS544B20RVFT

IC REG BUCK ADJ 20A 40LQFN

Texas Instruments

672
TPS544B20RVFT

Datasheet

SWIFT™, D-CAP™, D-CAP2™ 40-PowerLFQFN Tape & Reel (TR) Active Step-Down Positive Adjustable 1 4.5V Buck 18V 0.6V 5.5V 20A Selectable - Yes - -40°C ~ 125°C (TJ) Surface Mount 40-LQFN-CLIP (7x5)
LT8609AJDDM#PBF

LT8609AJDDM#PBF

IC REG BUCK ADJ 3A 10DFN

Analog Devices Inc.

1,627
LT8609AJDDM#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 3V Buck 42V 0.782V 42V 3A 200kHz ~ 2.2MHz - Yes - -40°C ~ 150°C (TJ) Surface Mount, Wettable Flank 10-DFN (3x3)
LT3973IDD#PBF

LT3973IDD#PBF

IC REG BUCK ADJ 750MA 10DFN

Analog Devices Inc.

334
LT3973IDD#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)
LT8609AJDDM-5#PBF

LT8609AJDDM-5#PBF

IC REG BUCK 5V 3A 10DFN

Analog Devices Inc.

306
LT8609AJDDM-5#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Fixed 1 3V Buck 42V 5V - 3A 200kHz ~ 2.2MHz - Yes - -40°C ~ 150°C (TJ) Surface Mount, Wettable Flank 10-DFN (3x3)
LT8609AJDDM-3.3#PBF

LT8609AJDDM-3.3#PBF

IC REG BUCK 3.3V 3A 10DFN

Analog Devices Inc.

124
LT8609AJDDM-3.3#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Fixed 1 3V Buck 42V 3.3V - 3A 200kHz ~ 2.2MHz - Yes - -40°C ~ 150°C (TJ) Surface Mount, Wettable Flank 10-DFN (3x3)
LT1940LEFE#PBF

LT1940LEFE#PBF

IC REG BUCK ADJ 1.4A DL 16TSSOP

Analog Devices Inc.

3,570
LT1940LEFE#PBF

Datasheet

- 16-TSSOP (0.173", 4.40mm Width) Exposed Pad Tube Active Step-Down Positive Adjustable 2 3.6V Buck 7V 1.25V 6.16V 1.4A 1.1MHz - No - -40°C ~ 85°C (TA) Surface Mount 16-TSSOP-EP
LT8582IDKD#PBF

LT8582IDKD#PBF

IC REG BST CUK ADJ 3.3A DL 24DFN

Analog Devices Inc.

4,080
LT8582IDKD#PBF

Datasheet

- 24-WFDFN Exposed Pad Tube Active Step-Up, Step-Up/Step-Down Positive or Negative Adjustable 2 2.5V Boost, Cuk, Flyback, SEPIC 22V 2.5V 42V (Switch) 3.3A (Switch) 200kHz ~ 2.5MHz - No - -40°C ~ 125°C (TJ) Surface Mount 24-DFN (7x4)
LTC3642IDD#TRPBF

LTC3642IDD#TRPBF

IC REG BUCK ADJ 50MA 8DFN

Analog Devices Inc.

2,635
LTC3642IDD#TRPBF

Datasheet

- 8-WFDFN Exposed Pad Tape & Reel (TR) 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)
LT3685EDD#PBF

LT3685EDD#PBF

IC REG BUCK ADJ 2A 10DFN

Analog Devices Inc.

1,748
LT3685EDD#PBF

Datasheet

- 10-WFDFN Exposed Pad Tube Active Step-Down Positive Adjustable 1 3.6V Buck 36V 0.79V 20V 2A 200kHz ~ 2.4MHz - No - -40°C ~ 125°C (TJ) Surface Mount 10-DFN (3x3)
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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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