FA7726

45V Input Buck Converter 3ch/2ch IC with Power MOSFET Ｑｕaｌｉｔｙ is our message FA7726/7730 3ch-IC Brock Diagram and application example 3ch-IC Brock Diagram and application example RT REG 3 FB1 IN 1 VIN 1 FB2 IN 2 VIN 2 FB3 IN 3 VIN 3 E. A . 3 PW M Co m p . 3 Features Features 1. Wide Input Voltage Range : 10 to 45V 2. 75 to 85% High Efficiency is achieved by using internal power MOSFETs with synchronized rectifier. 3. Low Operating Current : 3.5mA 4. Protection : Current Limit of power MOSFET, Each channel soft start, Timer Latched Protection for Short Current and Over Temperature OS C V RE G5 3V V RE G3 VR E F 5V REG 5 V in = 1 0 to 4 5V VC C E. A . 1 PW M Co m p . 1 PV C C 1 Dead Time P 1V C u rre n t Lim it OUT1 N VO 1 (5 V / . 2 A) 1 VIN 1 p in PG N D 1 P V CC2 E. A . 2 PW M Co m p . 2 UV LO Dead Time 1V Cu rre n t Lim it P OUT2 N V O 2( 3. 3V / . 2 A ) 1 VIN 2 p in PG N D 2 P V CC3 UV LO * Dead Time 1V Cu rre n t Lim it P OU T3 N V O 3 (1. 5V / . 2 A ） 1 VIN 3 p in PG N D 3 Brief Specification Brief Specification Characteristics 3ch FA7726F 2ch FA7730F 10 to 45V 5.0V,1.5V Selectable 5.0V/1.2A 1.2A Output 3.3V/1.2A 1.5V/1.2A 3.3V/1.2A 40k to 200kHz -20 to 150 degree UV LO CS 1 ch 1 CS 2 CS3 So ft Start UVLO ch 2 ch3 ch 1 C u rre n t Lim it ch 2 ch 3 Item Input Voltage Range CP UVLO _ L UVLO _ H FB Dete ctio n S R Q SC P DC Output Voltage / Current Switching Frequency OTP ( OH P ) OHP G ND Junction Temperature 45V Input Buck Converter 3ch/2ch IC with Power MOSFET Ｑｕaｌｉｔｙ is our message FA7726/7730 90 DC-to-DC Converter Data DC-to-DC Converter Data DC/DC 3 Outputs Condition FA7726 Efficie ncy Input Voltage vs. Efficiency 5V/1.2A 1.5V/0.8A 3.3V/0.8A fosc=40kHz fosc=60kHz fosc=80kHz fos c =100k Hz fos c =120k Hz 85 80 Effic ienc y [%] fos c =140k Hz fos c =160k Hz fos c =180k Hz fos c =200k Hz 75 70 65 60 5 10 15 20 25 30 35 40 45 50 55 DC input voltage [V]