Datasheet LT8303 (Analog Devices) - 24

LT8303
Typical applicaTion 30V to 80VIN, 48VOUT Isolated Flyback Converter
T1 D2 V + OUT V 1:2 IN 48V 30V TO 80V 0.3mA TO 60mA (VIN = 36V) Z1 4.7µF • 0.3mA TO 70mA (VIN = 48V) 100V 150µH 600µH V 0.3mA TO 75mA (VIN = 72V) IN 1M • 4.7µF LT8303 D1 100V EN/UVLO SW V – OUT 49.9k 243k D1: CENTRAL CMMR1U-02 R D2: DIODES SBR1U400P1-7 FB T1: SUMIDA PS15-113 GND Z1: CENTRAL CMHZ5265B 8303 TA06a
Efficiency vs Load Current Output Load and Line Regulation
100 50.4 90 49.6 80 48.8 TAGE (V) 70 48.0 EFFICIENCY (%) 60 47.2 OUTPUT VOL VIN = 36V 50 V 46.4 IN = 36V VIN = 48V VIN = 48V VIN = 72V VIN = 72V 40 45.6 0 10 20 30 40 50 60 70 80 0 10 20 30 40 50 60 70 80 LOAD CURRENT (mA) LOAD CURRENT (mA) 8303 TA06b 8303 TA06c
relaTeD parTs PART NUMBER DESCRIPTION COMMENTS
LT8300 100VIN Micropower Isolated Flyback Converter with 150V/260mA Switch Low IQ Monolithic No-Opto Flyback, 5-Lead TSOT-23 LT8304 100VIN Micropower Isolated Flyback Converter with 150V/2A Switch Low IQ Monolithic No-Opto Flyback, 8-Lead SO-8E LT8301 42VIN Micropower Isolated Flyback Converter with 65V/1.2A Switch Low IQ Monolithic No-Opto Flyback, 5-Lead TSOT-23 LT8302 42VIN Micropower Isolated Flyback Converter with 65V/3.6mA Switch Low IQ Monolithic No-Opto Flyback, 8-Lead SO-8E LT8309 Secondary-Side Synchronous Rectifier Driver 4.5V ≤ VCC ≤ 40V, Fast Turn-On and Turn-Off, 5-Lead TSOT-23 LT3748 100V Isolated Flyback Controller 5V ≤ VIN ≤ 100V, No-Opto Flyback, MSOP-16(12) LT3798 Off-Line Isolated No-Opto Flyback Controller with Active PFC VIN and VOUT Limited Only by External Components LT3757/LT3759/ 40V/100V Flyback/Boost Controller Universal Controllers with Small Package and Powerful LT3758 Gate Drive LT3957/LT3958 40V/80V Boost/Flyback Converter Monolithic with Integrated 5A/3.3A Switch LTC3803/LTC3803-3/ 200kHz/300kHz Flyback Controller in SOT-23 VIN and VOUT Limited Only by External Components LTC3803-5 LTC3805/LTC3805-5 Adjustable Frequency Flyback Controllers VIN and VOUT Limited Only by External Components 8303fa 24 LT REV A 0117 • PRINTED IN USA Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95 F0or3 m 5- o7re 4 in 17 formation www.linear.com/LT8303 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LT8303 LINEAR TECHNOLOGY CORPORATION 2016 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts