Datasheet LTC3890-3 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller |
| Pages / Page | 40 / 10 — FuncTional DiagraM |
| File Format / Size | PDF / 1.3 Mb |
| Document Language | English |
FuncTional DiagraM
Model Line for this Datasheet
Text Version of Document
LTC3890-3
FuncTional DiagraM
INTVCC VIN DUPLICATE FOR SECOND CONTROLLER CHANNEL BOOST DB C TG B DROP TOP PGOOD1 + OUT C 0.88V IN D DET BOT – SW TOP ON VFB1 S Q + INTV R Q CC – 0.72V SWITCH BG SHDN LOGIC BOT C PGND OUT FREQ 20µA VOUT VCO CLK2 + R CLK1 0.425V SENSE SLEEP L – ICMP IR – PFD + CLP + – – + + – 3mV SENSE+ SYNC 2.7V PLLIN/MODE DET 0.65V SENSE– 100k SLOPE COMP VFB + RB VIN EA – 0.80V TRACK/SS RA EXTVCC + OV – 0.88V C ITH C 5.1V 5.1V LDO LDO 7µA (RUN1) SHDN EN EN 0.5µA (RUN2) CC2 RC RST FOLDBACK + 1µA TRACK/SS 2(VFB) – 4.7V 11V SHDN CSS SGND INTVCC RUN 38901 FD 38903f 10 For more information www.linear.com/3890-3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Typical Performance Characteristics Operation Package Description Typical Application
FuncTional DiagraM
INTVCC VIN DUPLICATE FOR SECOND CONTROLLER CHANNEL BOOST DB C TG B DROP TOP PGOOD1 + OUT C 0.88V IN D DET BOT – SW TOP ON VFB1 S Q + INTV R Q CC – 0.72V SWITCH BG SHDN LOGIC BOT C PGND OUT FREQ 20µA VOUT VCO CLK2 + R CLK1 0.425V SENSE SLEEP L – ICMP IR – PFD + CLP + – – + + – 3mV SENSE+ SYNC 2.7V PLLIN/MODE DET 0.65V SENSE– 100k SLOPE COMP VFB + RB VIN EA – 0.80V TRACK/SS RA EXTVCC + OV – 0.88V C ITH C 5.1V 5.1V LDO LDO 7µA (RUN1) SHDN EN EN 0.5µA (RUN2) CC2 RC RST FOLDBACK + 1µA TRACK/SS 2(VFB) – 4.7V 11V SHDN CSS SGND INTVCC RUN 38901 FD 38903f 10 For more information www.linear.com/3890-3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Typical Performance Characteristics Operation Package Description Typical Application
