BD8622EFV_09 ROHM [Rohm], BD8622EFV_09 Datasheet
BD8622EFV_09
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BD8622EFV_09 Summary of contents
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System Power Supply for TV Series Built-in 1ch FET Light Load Type converters BD8622EFV ●Description BD8622EFV has realized the high performance and reliability required as a power supply for thin-screen TV. Due to the high-speed load response, ...
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BD8622EFV ●Electrical characteristics (Unless otherwise noted Ta=25℃, VIN=3.3V, GND=0V) Parameter VIN supply current (operating) VIN supply current (standby) Reference voltage (VREF) Output rise detection voltage Output decrease detection voltage Terminal PDET output current Oscillation frequency Pch FET ON resistance UVLO ...
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BD8622EFV ●Block diagram ●Pin Description No. Symbol 1 SGND Signal GND terminal 2 FB Feed back terminal Abnormal state notification and external IC 3 PDET abnormality detection terminal Switching output terminal ...
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BD8622EFV ●Pin equivalence circuit diagram No. Symbol 1 SGND GND (connected 0V Output voltage detection terminal 3 PDET Protecting BUS I/O terminal 5,6,7,8 SW Output terminal Power GND 10 PGND (Same voltage as SGND) 11,12,13 PVIN Power supply ...
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BD8622EFV No. Symbol 16 EN Enable terminal Operation mode switch terminal at 17 MODE light load www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. Explanation Terminal equivalent circuit diagram 5/15 Technical Note 2009.05 - Rev.A ...
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BD8622EFV No. Symbol SS 18 Soft start time adjustment terminal /DELAY Error amplifier compensation 19 FC terminal Oscillator frequency adjustment 20 RT terminal www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. Explanation Terminal equivalent circuit diagram 6/15 Technical Note ...
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BD8622EFV ●Operation description Enable control The device can be controlled ON/OFF by EN terminal (16 pin) voltage. An internal circuit starts when VEN reaches 1.1V. When standing up of VIN is too steep (1msec or less), a defective start might ...
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BD8622EFV Soft start time set function As for BD8622EFV, output can do soft start without overshoot by charging soft start capacity (CSS) connected between SS and SGND terminal. Also, soft start time (tss) can be set by setting soft start ...
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BD8622EFV Light load mode operation ・Low current mode When the terminal MODE (17 pins) is made "H", low current mode operation becomes effective. The characteristic of the efficiency valuing is obtained in low current mode operation at a light load. ...
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BD8622EFV ● Protection function Protection circuit is effective for destruction prevention due to accident so that avoid using under continuous protection operation. Low voltage protection function (LVP) The voltage of the terminal FB (2 pins) is compared with internal reference ...
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BD8622EFV Under voltage lock out protection (UVLO) As for BD8622EFV, the power-supply voltage decrease detection protection circuit is built in. It the input voltage decrease below the UVLO voltage (2.5V typ), the device state changes to the standby mode (Moreover, ...
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BD8622EFV Protecting BUS function with terminal PDET The terminal PDET (3 pins) monitors whether IC is normal or not. When IC becomes abnormal, the PDET output is reduced at "L" level with the output voltage fixed “L” level at the ...
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BD8622EFV ●Each characteristic reference data Vout : 100mV/div Io = 1A/div 100usec/div Fig.11 Output load response 100 VIN = 3. VIN = 5. 100 LOAD CURRENT [mA] Fig.13 Efficiency 2.0 ...
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BD8622EFV 0.810 0.808 VIN = 3.3V 0.806 0.804 0.802 0.800 0.798 0.796 0.794 0.792 0.790 - AMBIENT TEMPERATURE : Ta [℃] Fig.16 Reference voltage - Temperature characteristic 600.0 590.0 25℃ 580.0 570.0 560.0 550.0 540.0 530.0 520.0 510.0 ...
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BD8622EFV ●Ordering part number Part No Part No. HTSSOP-B20 <Dimension> 6.5 ± 0 0.325 1 10 +0.05 0.17 −0.03 S 0.08 S +0.05 0.65 0.2 −0.04 www.rohm.com © 2009 ROHM Co., Ltd. All rights ...
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No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...