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BD8964FVM Datasheet(PDF) 10 Page - Rohm |
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BD8964FVM Datasheet(HTML) 10 Page - Rohm |
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10 / 25 page  10/21 BD8964FVM Datasheet www.rohm.com ©2012 ROHM Co., Ltd. All rights reserved. TSZ22111･15･001 TSZ02201-0J3J0AJ00050-1-2 22.Jan.2015 Rev.003 3. Information on Advantages Advantage 1：Offers fast transient response by using current mode control system. Voltage drop due to sudden change in load was reduced Figure 22. Comparison of Transient Response Advantage 2： Offers high efficiency because of synchronous rectifiers For heavier load: This IC utilizes the synchronous rectifying mode and uses low ON-Resistance power MOSFETs. ON-Resistance of P-Channel MOSFET: 350mΩ(Typ) ON-Resistance of N-Channel MOSFET: 250mΩ(Typ) Advantage 3：・ Supplied in smaller package due to small-sized power MOSFETs Reduces mounting area requirement Figure 24. Example Application 10mm 15mm RITH CITH CIN CO L Conventional product (Load response IO=0.1A to 0.6A) BD8964FVM (Load response IO=0.1A to 0.6A) ・ Output capacitor CO required for current mode control: 10μF ceramic capacitor ・ Inductance L required for the operating frequency of 1 MHz: 4.7μH inductor VCC RITH L CO VOUT CITH CIN DC/DC Convertor Controller 110mV VOUT IOUT VOUT IOUT 58mV Figure 23. Efficiency 0 10 20 30 40 50 60 70 80 90 100 1 10 100 1000 10000 OUTPUT CURRENT:IOUT[mA] 【 VOUT=1.5V】 VCC=5V Ta=25°C Output Current: IOUT [mA] |
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