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BD42530EFJ-C Datasheet(PDF) 14 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) 14 Page - Rohm

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Datasheet
Datasheet
14/25
BD42530xxx-C
Series
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
www.rohm.com
TSZ02201-0G7G0AN00550-1-2
20.Apr.2016 Rev.001
1
10
100
1000
0
50
100
150
200
250
Output Current: Io [mA]
0.001
0.01
0.1
1
10
100
0
50
100
150
200
250
Output Current: Io [mA]
Selection of Components Externally Connected
VCC Pin
Insert Capacitors with a capacitance of 1 μF (Min) or higher between the VCC and GND. Choose the capacitance
according to the line between the power smoothing circuit and the VCC. Selection of the capacitance also depends on
the application. Verify the application and allow sufficient margins in the design. We recommend to mount the
capacitor as close as possible to the pin. When selecting the capacitor ensure that the capacitance of 1 μF or higher is
maintained at the intended applied voltage and temperature range.
Output Pin Capacitor
In order to prevent oscillation, a capacitor needs to be placed between the output pin and GND. We recommend
using a capacitor with a capacitance of 10 μF (Min) or higher. Electrolytic, tantalum and ceramic capacitors can be
used. When selecting the capacitor ensure that the capacitance of 10 μF or higher is maintained at the intended
applied voltage and temperature range. Capacitance fluctuation due to changes in temperature can possibly result in
oscillation. For selection of the capacitor refer to the data of Figure 18.
The stable operation range given in the data of Figure 17 is based on the standalone IC and resistive load. For actual
applications the stable operating range is influenced by the PCB impedance, input supply impedance and load
impedance. Therefore verification of the final operating environment is needed.
When selecting a ceramic type capacitor, we recommend using X5R, X7R or better with excellent temperature and
DC-biasing characteristics and high voltage tolerance.
Also, in case of rapidly changing input voltage and load current, select the capacitance in accordance with verifying
that the actual application meets with the required specification. Mount the capacitor as close as possible to the
connected pin.
Figure 17. Output Pin Capacitor ESR vs Output Current
Figure 18. Output Pin Capacitor vs Output Current
Figure 19. Measurement Setups for ESR Reference Data
Condition
5.6V ≤ Vcc ≤ 42V
2V ≤ VADJ/EN ≤ 16V
VADJ/EN < Vcc
CIN = 1 µF
10 µF ≤ CO ≤ 100 µF
-40°C ≤ Tj ≤ +150°C
Condition
5.6V ≤ Vcc ≤ 42V
2V ≤ VADJ/EN ≤ 16V
VADJ/EN < Vcc
CIN = 1µF
-40°C ≤ Tj ≤ +150°C
Stable Operation Range
Unstable Operation Range
Stable Operation Range
Unstable Operation Range


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