BD8622EFV-E2 Rohm Semiconductor, BD8622EFV-E2 Datasheet
BD8622EFV-E2
Specifications of BD8622EFV-E2
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BD8622EFV-E2 Summary of contents
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... 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 most suitable for TV-purpose processors with increasingly high performance, and due to the wide phase margin it leaves a good margin for board pattern & constant setting and so facilitates its application design. ...
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Electrical characteristic (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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Block Diagram ● Pin Description No. Symbol 1 Signal GND terminal SGND 2 Feed back terminal FB 3 PDET Abnormal state notification and external IC abnormality detection terminal Switching output terminal 7 SW ...
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Pin equivalence circuit diagram No. Symbol 1 SGND 2 FB Output voltage detection terminal 3 PDET Protecting BUS I/O terminal 5,6,7 PGND (Same voltage as SGND) 11,12,13 PVIN Power supply input terminal 14 SVIN Power supply input ...
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No. Symbol 16 EN Enable terminal Operation mode switch terminal 17 MODE Explanation at light load Terminal equivalent circuit diagram ...
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No. Symbol SS Soft start time adjustment 18 /DELAY Error amplifier compensation 19 FC Oscillator frequency adjustment 20 RT Explanation terminal terminal terminal Terminal equivalent circuit diagram ...
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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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... 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 capacity (CSS) arbitrarily. OSC oscillation frequency setting function ...
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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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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 voltage ...
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... Vo is fixed in a low level. Thermal shut down function Thermal shut down circuit (TSD circuit) is built into BD8622EFV. When the temperature of the chip exceeds Tjmax=175, the DC/DC converter is fixed in a low voltage. TSD function is aimed to shut down IC from thermal reckless driving under an abnormal state to exceed Tjmax=175. ...
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... PDET at "L" level from the outside. When two or more BD8622EFV is used in the application, this function prevents the IC from destroying, because one IC error transmits all other ICs by PDET line in the condition that PDET terminals are connected each other. ...
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Each characteristic reference data Vout : 100mV/div Io = 1A/div 100usec/div Fig.11 Output load response 100 90 VIN = 3. VIN = 5. 100 LOAD CURRENT [mA] Fig.13 Efficiency 2.0 ...
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VIN = 3.3V 0.806 0.804 0.802 0.800 0.798 0.796 0.794 0.792 0.790 - AMBIENT TEMPERATURE : Ta [℃] Reference voltage - Temperature characteristic Fig.16 600.0 590.0 25℃ 580.0 570.0 560.0 550.0 540.0 530.0 520.0 510.0 500.0 2.5 ...
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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 （Unit:mm) <Tape and Reel information> Tape Embossed carrier tape Quantity 2500pcs Direction E2 (The direction is the 1pin of product ...
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Appendix No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product ...