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BD33KA5WF-E2 Datasheet(PDF) 11 Page - Rohm |
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BD33KA5WF-E2 Datasheet(HTML) 11 Page - Rohm |
11 / 18 page Datasheet 11/15 BDxxKA5 Series BDxxKA5W Series BD00KA5W Series TSZ02201-0R6R0A600150-1-2 © 2012 ROHM Co., Ltd. All rights reserved. www.rohm.com TSZ22111・15・001 26.Jun.2012 Rev.001 ●Vo Terminal Please be sure to attach an anti-oscillation capacitor between Vo and GND. Be sure to place an anti-oscillation capacitor between the output terminal and the GND. Oscillations may arise if the capacitance value changes, due to factors such as temperature changes. A 1 μF capacitor with small internal series resistance (ESR) such as a ceramic capacitor is recommended as an anti-oscillation capacitor. Ceramic capacitors generally have favorable temperature characteristics and DC bypass characteristics. When selecting a ceramic capacitor, a high voltage capacitor (good DC bypass characteristics) with temperature characteristics that are superior to those of X5R or X7R, is recommended. In applications where input voltage and load fluctuations are rapid, please decide on a capacitor after sufficiently confirming its properties according to its specifications in the actual application. 0 20 40 60 80 100 120 01234 直流バイアスVdc(V) 0 20 40 60 80 100 120 01234 直流バイアスVdc(V) 0 20 40 60 80 100 120 -25 0 255075 Temp(℃) 50V Max.Input 16V Max.Input 10V Max.Input 16V Max.Input 10V Max.Input Y5V X7R X5R Vdc=0 Fig.26 General characteristics of ceramic capacitors 50V Max.Input DC bypass Vdc(V) DC bypass Vdc(V) (a) Capacitance-bypass characteristics (Y5V) (b)Capacitance-bypass characteristics(X5R,X7R) Temp(℃) (C)Capacitance-temperature characteristics(X5R,X7R,Y5V) Fig.25 ESR-Io Characteristics 0.01 0.1 1 10 100 0 100 200 300 400 500 Iout(m A) 安定領域 発振領域 Fig.24 Output Equivalent Circuit OUT 1μF IC Oscillation region Stable region ADJ Cin Vcc 2V 1μF 1μF ESR Io(ROUT) R1=30kΩ,R2=2kΩ Vcc GND R1 R2 VCTL OUT CTL Io(mA) |
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