This Product Selection Guide contains information to help select products in the Voltage Regulators - DC-DC Switching Regulators category on DigiKey.com
Products in the DC-DC switching regulator PMIC (Power Management Integrated Circuit) family are component-level devices used in applications requiring stabilization of a DC input voltage and/or transformation thereof to an output voltage of different magnitude. They are distinguished from similar products called “controller” PMICs by virtue of integrating the main switching element through which the power delivered by the device passes.
SelectionCharacteristics
Function: Indicates the type of conversion being done.
Output Configuration: Indicates the output voltage polarity of the device
Topology: Indicates the basic circuit configuration of the device, determining core aspects of its functionality and behavior.
Output Type: Indicates which output style the regulator uses, determining its basic characteristics and any necessary external components.
Number of Outputs: Indicates how many outputs this device provides.
Voltage - Input (Min): Characterizes the minimum input voltage required by a device for proper operation.
Voltage - Input (Max): Typically this represents the maximum voltage rating to which a device will meet its given specifications. Exceeding this voltage rating may damage the device and other system components.
Voltage - Output (MinFIxed): For fixed-output regulators, indicates the fixed voltage value the regulator provides on its output terminal. For adjustable devices, indicates the lower boundary of possible voltage values the device offers.
Voltage - Output (Max): For adjustable devices, indicates the upper boundary of possible voltage values the device offers.
Current - Output: The maximum amount of current that can be output by the device.
Frequency - Switching: Describes a device’s nominal operating frequency or frequency range; the rate at which an input power source is switched in the course of the conversion process.
Synchronous Rectifier: Indicates whether or not a device has provisions for controlling an external rectification transistor.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and other system components.
Mounting Type: Indicates how the device is attached
Package / Case: Indicates the type of protective case used on an electronic component to allow easy handling, installation, and protection. This selection was determined to be the closest industry standard applicable to the supplier device packaging. Typically it is best to check the actual dimensions from the datasheet rather than depend on this terminology when designing your circuit.
Supplier Device Package: This is what the manufacturer calls the package of this device. They are manufacturer specific. It is typically best to use the actual dimensions from the datasheets rather than to go by this terminology when designing your circuit.
ProductExamples
| MFR PART # | MAX5026EUT+T |
|---|---|
| DIGIKEY PART # | MAX5026EUT+TTR-ND - Tape & Reel (TR) |
| MANUFACTURER | Analog Devices Inc./Maxim Integrated |
| DESCRIPTION | Boost Switching Regulator IC Positive Adjustable 3V 1 Output 260mA (Switch) SOT-23-6 |
| DATASHEET | Click Here |
| MFR PART # | TPS62590DRVR |
|---|---|
| DIGIKEY PART # | 296-37149-2-ND - Tape & Reel (TR) |
| MANUFACTURER | Texas Instruments |
| DESCRIPTION | Buck Switching Regulator IC Positive Adjustable 0.75V 1 Output 1A 6-WDFN Exposed Pad |
| DATASHEET | Click Here |
| MFR PART # | TC7660SEPA |
|---|---|
| DIGIKEY PART # | TC7660SEPA-ND |
| MANUFACTURER | Microchip Technology |
| DESCRIPTION | Charge Pump Switching Regulator IC Positive or Negative Fixed -Vin, 2Vin 1 Output 20mA 8-DIP (0.300", 7.62mm) |
| DATASHEET | Click Here |
| MFR PART # | MC33167TVG |
|---|---|
| DIGIKEY PART # | MC33167TVGOS-ND |
| MANUFACTURER | onsemi |
| DESCRIPTION | Buck, Boost Switching Regulator IC Positive or Negative Adjustable 5.05V 1 Output 5.5A (Switch) TO-220-5 Formed Leads |
| DATASHEET | Click Here |
MediaLinks
Videos
Measuring Switching Regulator Noise | DigiKey
Articles
Selecting the Correct Regulator
The Difference Between Switching Regulator Continuous and Discontinuous Modes and Why It’s Important
Design Trade-offs when Selecting a High-Frequency Switching Regulator
Understanding Switching Regulator Control Loop Response
Using an Inverting Regulator Buck/Boost Conversion
What You Need to Know About Synchronous Voltage Regulation
DC/DC Voltage Regulators: How to Choose Between Discrete and Modular Design
Product Training Modules
DC to DC Conversion Cookbook - STMicroelectronics
High Efficiency Switching DC Regulators - CUI
Blogs
Switching Regulators vs Low Dropout Regulators
Minimize Switching Regulator Noise
TechForum
Linear Voltage Regulator vs. Switching Regulator
A little PCB space to design a more Compact Power Supply
The Golden Rule of Board Layout for Switch-Mode Power Supplies