Datasheet LTC3633A-2, LTC3633A-3 (Analog Devices) - 10

LTC3633A-2/LTC3633A-3
BLOCK DIAGRAM
CIN VON RUN PVIN 1.22V 140k AV = 1 + – RUN PVIN INTVCC 0.6V (LTC3633A-2) 6V (LTC3633A-2) 1.5V (LTC3633A-3) 12V (LTC3633A-3) RUN I I ON ON V OSC1 t VON CONTROLLER ON = R IION ON S Q BOOST SWITCH LOGIC TG AND M1 CBOOST ANTI- SW SHOOT L1 THROUGH COUT BG M2 ICMP IREV + PGND + – – COMP SELECT SENSE– SENSE+ R2 ITH FB RC IDEAL DIODES R1 CC1 0.6V – REF EA – 0.648V + 0V INTERNAL PGOOD SOFT-START + INTVCC 1.4µA – TRACK – TRACKSS FC BURST UV SS MODE SELECT C + SS 0.552V + 0.48V AT START-UP CHANNEL 1 0.10V AFTER START-UP OSC1 SVIN CSVIN RT OSC MODE/SYNC OSC PLL-SYNC R INTVCC RT 3.3V REG PHMODE C PHASE VCC SELECT SGND OSC2 CHANNEL 2 (SAME AS CHANNEL 1) 3633a23 BD 3633a23fb 10 For more information www.linear.com/LTC3633A-2 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Package Description Typical Application Related Parts