Datasheet LTC3853 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | Triple Output, Multiphase Synchronous Step-Down Controller |
| Pages / Page | 36 / 10 — FUNCTIONAL DIAGRAM |
| File Format / Size | PDF / 763 Kb |
| Document Language | English |
FUNCTIONAL DIAGRAM
Model Line for this Datasheet
Text Version of Document
LTC3853
FUNCTIONAL DIAGRAM
FREQ/PLLFLTR MODE/PLLIN EXTVCC VIN VIN 4.7V + CIN – + F 0.8V MODE/SYNC 5V DETECT REG PLL-SYNC INTV – + CC F INTVCC BOOST OSC S BURSTEN TG CB R Q FCNT M1 SW ON 3k SWITCH + – LOGIC AND SENSE+ DB L1 ANTI- ICMP IREV V SHOOT OUT – + THROUGH SENSE– RUN + COUT BG OV M2 SLOPE CVCC ILIM COMPENSATION PGND PGOOD INTVCC UVLO + 0.74V 1 SLOPE RECOVERY R2 UV V 51k ACTIVE CLAMP FB I – THB + VIN SLEEP R1 OV – 0.86V – SS 0.8V + – RUN + SGND REF EA 1.3µA – + + + – 0.64V 1.2V 0.5µA 0.55V 3853 FD I CC1 CSS TH RC RUN TK/SS 3853fc 10 For more information www.linear.com/LTC3853 Document Outline Features Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
FUNCTIONAL DIAGRAM
FREQ/PLLFLTR MODE/PLLIN EXTVCC VIN VIN 4.7V + CIN – + F 0.8V MODE/SYNC 5V DETECT REG PLL-SYNC INTV – + CC F INTVCC BOOST OSC S BURSTEN TG CB R Q FCNT M1 SW ON 3k SWITCH + – LOGIC AND SENSE+ DB L1 ANTI- ICMP IREV V SHOOT OUT – + THROUGH SENSE– RUN + COUT BG OV M2 SLOPE CVCC ILIM COMPENSATION PGND PGOOD INTVCC UVLO + 0.74V 1 SLOPE RECOVERY R2 UV V 51k ACTIVE CLAMP FB I – THB + VIN SLEEP R1 OV – 0.86V – SS 0.8V + – RUN + SGND REF EA 1.3µA – + + + – 0.64V 1.2V 0.5µA 0.55V 3853 FD I CC1 CSS TH RC RUN TK/SS 3853fc 10 For more information www.linear.com/LTC3853 Document Outline Features Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
