14/20

29.Nov.2013 Rev.003

www.rohm.com

© 2013 ROHM Co., Ltd. All rights reserved.

TSZ22111・15・001

BD4275FP2-C

BD4275FPJ-C

Datasheet

TSZ02201-0T2T0AN00110-1-2

Application Examples

・Applying positive surge to the VCC

If the possibility exists that surges higher than 45 V will be applied to the VCC, a Zener Diode should be placed between

the VCC and GND as shown in the figure below.

Figure 24. Application Example 1

・Applying negative surge to the VCC

If the possibility exists that negative surges lower than the GND are applied to the VCC, a Shottky Diode should be place

between the VCC and GND as shown in the figure below.

Figure 25. Application Example 2

・Implementing a Protection Diode

If the possibility exists that a large inductive load is connected to the output pin resulting in back-EMF at time of startup and

shutdown, a protection diode should be placed as shown in the figure below.

Figure 26. Application Example 3

・Reverse Polarity Diode

In some applications, the VCC and pin potential might be reversed, possibly resulting in circuit internal damage or damage

to the elements. For example, while the external capacitor is charged, the A point shorts to the GND. Use a capacitor with

a capacitance with less than 1000

μF. We also recommend using reverse polarity diodes in series or a bypass between all

pins and the VCC.

Figure 27. Application Example 4

A

VCC

VO

GND

Bypass Diode

Reverse Polarity Diode