This Product Selection Guide contains information to help select products in the Power Distribution Switches, Load Drivers category on DigiKey.com
Products in this family are solid-state devices used to connect or interrupt the flow of current to a supported load, under the direction of a logic-level control signal that is itself incapable or unsuitable for supplying the load. They integrate the semiconductor switching device used to interrupt current flow and incorporate additional supporting components/functions such as over-voltage clamping, current limiting, and under-voltage lockouts, which differentiate them from similar IC and discrete components.
SelectionCharacteristics
Switch Type: Indicates an application for which a device is specifically intended, if any.
Number of Outputs: Indicates how many outputs the device provides.
Ratio - Input:Output: Indicates the number of signal inputs and outputs present in each functional circuit within a device.
Output Configuration: Indicates the circuit configuration the device’s output is designed to provide.
Output Type: Indicates the type of electrical signal the device provides, such as bipolar, Darlington, or N-channel.
Interface: Indication of which interface(s) or protocol(s) are used by the device to communicate with other components in the system.
Voltage - Load: Indicates the maximum voltage that can be controlled by a device’s output stage; may be distinct and different from that which is required for powering a device’s internal workings.
Voltage - Supply (Vcc/Vdd): Characterizes the allowable voltage range for the supply input which powers the internal functions of the device, as distinguished from the allowed range for the supply being controlled or transformed by the device. May reflect both for devices that derive operational power internally from a source being controlled.
Current - Output (Max): The maximum amount of current that can be output by the device.
Rds On (Typ): Manufacturer’s characterization of device on-state resistance(s). See datasheets for applicable test conditions.
Input Type: Indicates which control signal or circuitry the device is designed to interact with.
Features: These are different capabilities or properties of the device such as auto restart, load discharge, and sleep mode.
Fault Protection: Enumerates protection features incorporated by a device and/or operational hazards against which a device is protected in some manner.
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.
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.
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.
ProductExamples
| MFR PART # | BV2HD045EFU-CE2 |
|---|---|
| DIGIKEY PART # | 846-BV2HD045EFU-CE2TR-ND - Tape & Reel (TR) |
| MANUFACTURER | Rohm Semiconductor |
| DESCRIPTION | Power Switch/Driver 1:1 N-Channel 21A 16-HSSOP-C |
| DATASHEET | Click Here |
| MFR PART # | TBD62083APG |
|---|---|
| DIGIKEY PART # | TBD62083APG-ND |
| MANUFACTURER | Toshiba Semiconductor and Storage |
| DESCRIPTION | Power Switch/Driver 1:1 N-Channel 500mA 18-DIP |
| DATASHEET | Click Here |
| MFR PART # | AP2171WG-7 |
|---|---|
| DIGIKEY PART # | AP2171WGDITR-ND - Tape & Reel (TR) |
| MANUFACTURER | Diodes Incorporated |
| DESCRIPTION | Power Switch/Driver 1:1 P-Channel 1A SOT-25 |
| DATASHEET | Click Here |
| MFR PART # | SLG59M1440V |
|---|---|
| DIGIKEY PART # | 1827-1058-2-ND - Tape & Reel (TR) |
| MANUFACTURER | Renesas Design Germany GmbH |
| DESCRIPTION | Power Switch/Driver 1:1 N-Channel 1A 4-STDFN (1x1) |
| DATASHEET | Click Here |
MediaLinks
Articles
Load Switches Minimize Power Consumption
Smart High-Side Drivers Meet Automotive Standards
Blogs
Introduction to High-Side Load Switches
TechForum
Reverse Current Protection in a System