Datasheet LTC3868 (Analog Devices) - 10
| Hersteller | Analog Devices |
| Beschreibung | Low IQ, Dual 2-Phase Synchronous Step-Down Controller |
| Seiten / Seite | 38 / 10 — FUNCTIONAL DIAGRAM |
| Dateiformat / Größe | PDF / 406 Kb |
| Dokumentensprache | Englisch |
FUNCTIONAL DIAGRAM
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LTC3868
FUNCTIONAL DIAGRAM
INTVCC VIN DUPLICATE FOR SECOND BOOST + CONTROLLER CHANNEL PGOOD1 0.88V PHASMD 24, 17 DB CLKOUT 27 – 3 4 V TG FB1 C + 26, 15 B DROP TOP OUT C – IN D 0.72V DET BOT SW 25, 16 TOP ON + PGOOD2 S Q 0.88V 14 – INTV R Q CC BG V SWITCH FB2 23, 18 SHDN + LOGIC BOT – C 0.72V PGND OUT FREQ 20µA 21 VOUT 2 VCO CLK2 + R CLK1 0.425V SENSE SLEEP L – ICMP IR – PFD + CLP + – – + + – SENSE+ 3mV 32, 10 SYNC 2.7V PLLIN/MODE DET 0.55V SENSE– 5 1, 9 100k SLOPE COMP VFB ILIM 31, 11 CURRENT + RB 28 LIMIT EA – 0.80V VIN TRACK/SS RA 22 + EXTV OV CC – I 0.88V TH CC 20 30, 12 5.1V 5.1V 0.5µA SHDN CC2 RC LDO LDO RST FOLDBACK EN EN 2(VFB) SS + 1µA 29, 13 – 4.7V 11V SHORT CKT SHDN C RUN SS LATCH-OFF 6 SGND 19 INTVCC 7, 8 10µA 3868 FD 3868fe 10 For more information www.linear.com/LTC3868 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Typical Performance Characteristics Pin Functions Operation Package Description Typical Application Related Parts
FUNCTIONAL DIAGRAM
INTVCC VIN DUPLICATE FOR SECOND BOOST + CONTROLLER CHANNEL PGOOD1 0.88V PHASMD 24, 17 DB CLKOUT 27 – 3 4 V TG FB1 C + 26, 15 B DROP TOP OUT C – IN D 0.72V DET BOT SW 25, 16 TOP ON + PGOOD2 S Q 0.88V 14 – INTV R Q CC BG V SWITCH FB2 23, 18 SHDN + LOGIC BOT – C 0.72V PGND OUT FREQ 20µA 21 VOUT 2 VCO CLK2 + R CLK1 0.425V SENSE SLEEP L – ICMP IR – PFD + CLP + – – + + – SENSE+ 3mV 32, 10 SYNC 2.7V PLLIN/MODE DET 0.55V SENSE– 5 1, 9 100k SLOPE COMP VFB ILIM 31, 11 CURRENT + RB 28 LIMIT EA – 0.80V VIN TRACK/SS RA 22 + EXTV OV CC – I 0.88V TH CC 20 30, 12 5.1V 5.1V 0.5µA SHDN CC2 RC LDO LDO RST FOLDBACK EN EN 2(VFB) SS + 1µA 29, 13 – 4.7V 11V SHORT CKT SHDN C RUN SS LATCH-OFF 6 SGND 19 INTVCC 7, 8 10µA 3868 FD 3868fe 10 For more information www.linear.com/LTC3868 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Typical Performance Characteristics Pin Functions Operation Package Description Typical Application Related Parts