Q&A

Please use open collector or open drain for products which is pulled up internally.

Like BSI series, ON/OFF pin can be controlled without switching ON or OFF of input. Output will be at ON state when ON/OFF pin is open, output will be at OFF state when pins between GND is short.

Voltage does not have to be impressed externally since we recommend to control by connecting transistor and FET at external.

For products which is pulled up internally, please avoid from impressing the voltage externally. The problem might be caused when voltage which is higher than internal pull up voltage is impressed.

There are multiple Vin, GND-Vout pins of BSV, this is because due to big current and multiple pins need to be used.

Therefore, basically please use multiple pins.

For tentative use such as checking operation, only one pin can be used without problem. (Each pin is connected internally)

+S, -S pins are sensing pins but they can be left open. P good is open-drain output which becomes H at normal output and they can be left open.

Output voltage of Vadj pin can be changed by connecting Vout pin and the resistor. By putting 22kΩ it will be about 2.5V.

Please refer to the attached data sheet for calculation method of the resistance value.

We recommend the capacitor of low ESR for external capacitor.

Generally, we recommend multi-layered ceramic capacitor.

We recommend low impedance capacitor for external capacitor. We recommend electrolytic capacitor, which is described as low impedance or as for switching regulator.

Multilayered ceramic capacitor is low impedance but it might become unstable or oscillate depending on the products.

When using multi layered ceramic capacitor as converter’s external capacitor, some products may become unstable or oscillate.

This is because the multi layered ceramic capacitor is low ESR and it may oscillate between lead inductance of wire and so, and piezoelectric, which is dielectric, may mechanically consonance.

The TMH series, BTN, BTP series, and BHW series, it is recommended that an external capacitor be connected, however even without it, the products will work fine. By connecting an external capacitor the output ripple noise level will decrease, and it is recommended since this is normal. Therefore it does not need to be the recommended values. For the multi layered ceramic recomendations customers can also use a film capacitor or electrolysis capacitor as well. It is important to determine the level of noise and ripple. Also, the BSS series and BSI series, an external capacitor is required. The product requires an external capacitor for the circuit to operate properly. Products which require an external capacitor are stated in the catalog.

Our company do not sell in small quantities. Please check out some of the distributors from our site.

The isolation pressure on the DC-DC converter is the same as a voltage experiment. The isolation pressure is usually for a short period of time (1 sec, 1 min.). Therefore, the product will not work when voltage is constantly impressed.

Our DC-DC converters all have a built-in over current restriction value inside the converters, therefore setting the restriction value is not possible.