Datasheet LTC3855 (Analog Devices) - 11

LTC3855 FuncTional block DiagraM FREQ MODE/PLLIN PHASMD ITEMP EXTVCC VIN VIN 4.7V + CIN – + TEMPSNS F 0.6V MODE/SYNC 5V DETECT REG PLL-SYNC INTV – + CC INTVCC F BOOST CLKOUT OSC S BURSTEN TG CB R Q FCNT M1 SW L1 ON 3k SWITCH VOUT + – LOGIC AND SENSE+ DB ANTI- ICMP IREV SHOOT – + THROUGH SENSE– + RUN COUT BG OV M2 CVCC SLOPE COMPENSATION ILIM PGND PGOOD DIFFP INTVCC UVLO 40k + 0.54V + 1 SLOPE RECOVERY R2 UV V DIFFAMP 40k 51k ACTIVE CLAMP FB I – – THB + DIFFN V 40k 40k IN SLEEP R1 OV – 0.66V – SS 0.6V + – RUN + SGND REF 1.2µA EA – + + + – 0.5V 1.2V 1µA 0.55V 3855 FBD I CC1 CSS TH RC RUN TK/SS DIFFOUT 3855f Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Package Description Related Parts