LTC3721-1 WBLOCK DIAGRA S A DRV DRVB 37211 BD01 1A SOURCE 1.5A SINK 1A SOURCE 1.5A SINK Q Q T DPRG GND RQ S TOR TC OSCILLA REF 5V LTC3721-1 Block Diagram V R S TOR , LDO REF GOOD CCV REF TOR GOOD SLOPE Q T COMPENSA PULSE WIDTH MODULA 1.2V A FAUL LOGIC µ CC – + 13 REF V V SYSTEM UVLO A µ 14.9k 10 -PULSE + – 5V PULSE-BY CURRENT LIMIT 50k UVLO + – SHUTDOWN CURRENT LIMIT + – + – ERROR AMPLIFIER 300mV CC UVLO V CCV 6V “OFF” 10.25V “ON” – + BLANK 650mV 600mV + – 1.2V FB SS CS LEBR COMP sn37211 37211fs 8