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LT8551 Datasheet(PDF) 30 Page - Analog Devices |
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LT8551 Datasheet(HTML) 30 Page - Analog Devices |
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30 / 32 page  LT8551 30 Rev 0 For more information www.analog.com TYPICAL APPLICATIONS 48V Step-Up Expander System VIN REG VIN INTVCC POWER STAGE 1 REG 1N4448HWT + + GND MODE 8551 TA04 ISP ISN 10 1nF COUT8, COUT9 15µF 100V COUT2 4.7µF CIN7 22µF CIN2 10µF 10 464k 7.87k 1nF 1µF 50V 100pF 10µF 10 0.22µF 1nF VIN + 100µF 100V + 100µF 100V CIN1 10µF CIN6 22µF 0.22µF 1nF 10nF COUT6, COUT7 15µF 100V COUT1 4.7µF POWER STAGE 2 POWER STAGE 3 POWER STAGE 4 ENOUT CLK1 TGSR TGSH BGSH TGSL SHDN VIN REGIS REGDRV REG PHS1 PHS2 VCC PHS3 SYNC ILIM RT/MS IAMPP IAMPN CLK2 TGBUF BGBUF ITH ILIM SS RUN PLLIN/MODE PGOOD 47k 47k 10 10nF 10 47k 10 1nF 10nF 4.7µF L2 10µH RS2 4m L1 10µH RS1 4m 2k 0.12µF 22pF 0.1µF 1000µF 50V 1000µF 50V 1µF 46.4k LT8551 LTC3769 PINS FOR POWER STAGES 2,3,4 13k 71.5k 350kHz 2.2µF 1nF 1 LT8551 PINS NOT SHOWN IN THIS CIRCUIT: BST2, BST3, BST4 TG2, TG3, TG4, SW2, SW3, SW4, BG2, BG3, BG4, ISP2, ISP3, ISP4, ISN2, ISN3, ISN4 5.8V VIN 6V TO 46V MP VOUT 48V 7.5A AT 6VIN 15A AT 12VIN 30A AT 24VIN 45A AT 36VIN REGSNS INTVCC INTVCC OVMODE 20 12.1k D2 D1 M1, M2 M3, M4 M5, M6 M7, M8 BST1 SW1 ISN1 ISP1 BG1 TG1 VIN SENSE– SENSE+ EXTVCC BOOST TG SW BG VFB VBIAS FREQ GND REG D1–D5: BAS170W MP1: ZXMP10A18G RS1–RS5: PANASONIC ERJ-MP4QF4M0U L1–L5: COILCRAFT SER2918H-103KL CIN1–CIN5: MURATA GRM32ER71H106KA12A CIN6–CIN10: KRM55WR71H226MH01K COUT1–COUT5: TDK C3225X7S2A475M200AB COUT6–COUT15: KRM55WR72A156MH01K M1–M20: BSC100N06LS3 |
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