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BD9866GUL Datasheet(PDF) 8 Page - Rohm |
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BD9866GUL Datasheet(HTML) 8 Page - Rohm |
8 / 39 page 8/35 Datasheet Datasheet BD9866GUL TSZ02201-0B2B0A400010-1-2 17.APR.2013 Rev.001 © 2013 ROHM Co., Ltd. All rights reserved. www.rohm.com TSZ22111・15・001 PVCC4 VCC Lx1 PGND1 PVCC1 Lx2 PVCC2 PVCC3 Lx31 PGND3 Lx32 Vo3 Lx4 VREGB PGND2 PVCC A B D C C B A D + - + ERRORAMP1 PWMCOMP1 INV1 + - + ERRORAMP2 INV2 + - + ERRORAMP3 INV3 ERRORAMP4 INV4 + - SCP TIMER PROTECTION TSD UVLO OSC CH CTL VREG A PGND CTL1 CTL2 CTL3 CTL4 RT VREGA GND SYNC CH2 Step Down (Current mode) CH1 Step Down (Current mode) CH3 Cross Converter (Voltage mode) -- -- + RTSS VREG D VREG B VREGD SCP CH4 Step Down (Current mode) PWMCOMP2 PWMCOMP3 PG SCP TIMEROUT Substrate VCC VREGA VREGD OCP OCP OCP PWMCOMP4 OCP VREGA VREGA VREGA VREGA RTSS enable SS Counter reset CLK shutdown SCP TIMEROUT Limit input current for PVCC Limit input current for PVCC Limit input current for PVCC Limit input current for PVCC + PGND4 Light Load mode Light Load mode CH1G VREGA VREGA CH2G SEL SEL SEL 150kΩ 180kΩ 100kΩ 120kΩ 200kΩ 39kΩ 24pF 75kΩ 24kΩ 0.01μF 0.01μF 82kΩ 1.0μF 1.0μF 1.0μF 100kΩ 10μF 4.7μH 4.7μF 10μF 4.7μF 4.7μH 10μF 4.7μH 4.7μF 10μF 4.7μH 4.7μF Vo1 1.1V Vo2 1.5V Vo3 5.0V Vo4 3.3V (47pF) (8.2kΩ) () () (*1) Figure. 5 Application circuit 2 (*1) Add to improve transient characteristics optionally. We are confident that above applied circuit diagram should be recommended, but please thoroughly confirm its characteristics when using it. In addition, when using it with external circuit’s constants changed, please make a decision that allows a sufficient margin in light of the fluctuations of external components and ROHM’s IC in terms of not only static characteristics but also transient characteristics.. |
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