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BD42530EFJ-C Datasheet(PDF) 14 Page - Rohm |
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BD42530EFJ-C Datasheet(HTML) 14 Page - Rohm |
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14 / 29 page  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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