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About information presented in this cross reference

The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.

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Interface Circuit

Example of Interface Circuit Block Diagram Circuit Description

Circuit Description

Example of Interface Circuit Block Diagram

In Europe and North America, where the central heating and cooling system is the mainstream, systems for heating, cooling and ventilation are developing, and thermostats are constantly connected to these systems. This system is connected to a motor or the like, and the thermostat is always exposed to motor noise or abnormality. Isolation from the system is essential to avoid this risk. Photorelays are preferred for such isolation.

Toshiba's photorelays have a wide range of on-state current (ION) and low on-state resistance (RON). Small packages are also available that are designed to be compact and have design flexibility.

Examples of typical recommended products are listed below, and also provide a link to the online distributor inventory search page to buy the product.

Photorelays are a type of photocouplers consisting of an LED optically coupled with a MOSFET. Photorelays offer many advantages over mechanical relays such as long service life, low-current drive and fast response. Photorelays are widely used for contact switching in semiconductor test systems, security systems, etc. Toshiba offers low RON, low COFF photorelays in ultra-small VSON/S-VSON packages for semiconductor test system applications, and general-purpose photorelays in various packages featuring high current and high off-state voltage.

Product name

Data sheet Package
(Width×Length×Height mm)

Product Overview

Checking On-line distributor inventory



BVS=1500Vrms (Min), ION=2.3A (Max), RON=70mΩ (Max) (IF=5mA, ION=2A), VOFF=60V (Max)



BVS=1500Vrms (Min), ION=4.0A (Max), RON=40mΩ (Max) (IF=5mA, ION=4A), VOFF=60V (Max)



BVS=1500Vrms (Min), ION=3.0A (Max), RON=65mΩ (Max) (IF=5mA, ION=3A), VOFF=100V (Max)



BVS=2500Vrms (Min), ION=3.0A (Max), RON=100mΩ (Max) (IF=5mA, ION=3A), VOFF=60V (Max)



BVS=2500Vrms (Min), ION=3.0A (Max), RON=150mΩ (Max) (IF=5mA, ION=1A), VOFF=100V (Max)



BVS=2500Vrms (Min), ION=1.5A (Max), RON=500mΩ (Max) (IF=5mA, ION=1A), VOFF=200V (Max)

Toshiba offers a broad array of LED drivers featuring constant-current drivers with excellent LED current accuracy. Included in the Toshiba LED driver portfolio are not only standard LED drivers, but also those with PWM dimming control, current gain control and various error detection functions. Toshiba product lineup also includes LED drivers with a DC-DC converter making them suited for mobile equipment applications.

Product name

Data sheet Package
(Width×Length×Height mm)

Product Overview

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Step Up Type DC/DC Converter for White LED, Variable LED current IF is set with an external resistor: 80mA (Typ.), High current accuracy: +/-1.5%



Step-up DC/DC controller built in 4-channel sink driver for white LED, 4ch constant current driver:

Sink current 20mA to 150mA

Current accuracy +/-2% (ILED=100mA, between channels)

Other Circuit Description

Power Supply Circuit

Other block diagrams

Power supply circuit
Example of a power supply circuit to MCU
Application / Thermostat
Power supply circuit
Circuit example of an AC input main power supply
Application / Thermostat
Power supply circuit using P-ch MOSFET
Examples of Charger IC and USB Power Supply Circuit using P-ch MOSFETs
Application / Thermostat
Panel display system
Application / Thermostat
Power supply circuit using N-ch MOSFET
Examples of Charger IC and USB Power Supply Circuit using N-ch MOSFETs
Application / Thermostat
Isolation circuit
Example of an insulating circuit using photorelay (replacement from mechanical relay)
Application / Thermostat

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