Datasheet LTC3868-1 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | Low IQ, Dual 2-Phase Synchronous Step-Down Controller |
| Pages / Page | 38 / 10 — FUNCTIONAL DIAGRAM |
| File Format / Size | PDF / 475 Kb |
| Document Language | English |
FUNCTIONAL DIAGRAM
Model Line for this Datasheet
Text Version of Document
LTC3868-1
FUNCTIONAL DIAGRAM
INTVCC VIN DUPLICATE FOR SECOND CONTROLLER CHANNEL BOOST DB CB TG DROP TOP PGOOD1 + OUT C 0.88V IN D DET BOT – SW TOP ON VFB1 S Q + INTVCC R – Q 0.72V SWITCH BG SHDN LOGIC BOT C PGND OUT FREQ 20μA VOUT VCO CLK2 + R 0.425V SENSE CLK1 SLEEP L – ICMP IR + + PFD – – – + + – 3mV SENSE+ SYNC 2(VFB) PLLIN/MODE DET 0.45V SENSE– 100k SLOPE COMP VFB R + B VIN EA – 0.80V R TRACK/SS A EXTVCC + OV – C 0.88V C ITH 5.1V 5.1V LDO LDO EN EN 0.5μA SHDN C R C2 C RST FOLDBACK + 2(VFB) – 4.7V 1μA SS SGND INTV 11V CC RUN SHORT CKT SHDN CSS LATCH-OFF 10μA 38681 FD 38681fd 10
FUNCTIONAL DIAGRAM
INTVCC VIN DUPLICATE FOR SECOND CONTROLLER CHANNEL BOOST DB CB TG DROP TOP PGOOD1 + OUT C 0.88V IN D DET BOT – SW TOP ON VFB1 S Q + INTVCC R – Q 0.72V SWITCH BG SHDN LOGIC BOT C PGND OUT FREQ 20μA VOUT VCO CLK2 + R 0.425V SENSE CLK1 SLEEP L – ICMP IR + + PFD – – – + + – 3mV SENSE+ SYNC 2(VFB) PLLIN/MODE DET 0.45V SENSE– 100k SLOPE COMP VFB R + B VIN EA – 0.80V R TRACK/SS A EXTVCC + OV – C 0.88V C ITH 5.1V 5.1V LDO LDO EN EN 0.5μA SHDN C R C2 C RST FOLDBACK + 2(VFB) – 4.7V 1μA SS SGND INTV 11V CC RUN SHORT CKT SHDN CSS LATCH-OFF 10μA 38681 FD 38681fd 10
