LT3514 BLOCK DIAGRAM PRECISION UVLO 1.44V ON SW5 REF BOOST ERROR AMP EN/UVLO BOOST SWITCH AND DRIVE SKY S VIN VIN R NQ Q5 4.5V 5V VIN 1µA SKYBAD 0.7V SKY Σ D5 0.4V LOCK 1SHOT BOOST REGULATOR STARTUP/SHUTDOWN THERMAL SHUTDOWN SLOPE CLK1 CLK2 TO CH3, CH4 SKY OSC SLOPE 1SHOT V 0 IN SYNC 1 FREQUENCY DETECT TO CURRENT 2.2V 0.7V S Σ 0.8V R NQ Q1 1µA SW1 0.1V OUT1 SWITCH AND DRIVE + SKYBAD – DA1 SKYBAD FB1 ONE OF THREE BUCK REGULATORS SHOWN 0.8V CURRENT LIMIT FOLDBACK PG PGOOD 0.72V FB1 COMPARATORS FROM OTHER CHANNELS POWER GOOD LOGIC RT/SYNC RUN/SS1 GND 3514 BD 3514fa 10 For more information www.linear.com/LT3514 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Typical Application Related Parts
