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BD42530EFJ-C Datasheet(PDF) 18 Page - Rohm

Part No. BD42530EFJ-C
Description  250 mA Output Voltage Tracker
Download  29 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD42530EFJ-C Datasheet(HTML) 18 Page - Rohm

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© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
20.Apr.2016 Rev.001
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.
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.
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.
Reverse Polarity Protection Diode
In some applications, the VCC and pin potential might be reversed, possibly resulting in damage to internal circuit or
damage to the element. In instance, when VCC shorts to GND while external capacitor at VO is charged.
Reverse current in case of point A described in below diagram can be prevented by inserting Reverse polarity protection
diode in series to the VCC.
When a short of the point B and the GND is concerned after having reverse polarity protection diode inserted, we
recommend inserting a bypass diode between the VCC and the VO.
If the reverse polarity protection diode and bypass diode cannot be inserted due to any reasons, use a capacitor with a
capacitance with less than 1000μF at VADJ / EN = 5V and 100μF at VADJ / EN = 16V to avoid damage to the internal circuits or
the elements.

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