Datasheet LT8304, LT8304-1 (Analog Devices) - 25
| Fabricante | Analog Devices |
| Descripción | 100VIN Micropower No-Opto Isolated Flyback Converter with 150V/2A Switch |
| Páginas / Página | 28 / 25 — TYPICAL APPLICATIONS. –4V to –80VIN/12VOUT Buck-Boost Converter. … |
| Formato / tamaño de archivo | PDF / 1.2 Mb |
| Idioma del documento | Inglés |
TYPICAL APPLICATIONS. –4V to –80VIN/12VOUT Buck-Boost Converter. Efficiency vs Load Current
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LT8304/LT8304-1
TYPICAL APPLICATIONS –4V to –80VIN/12VOUT Buck-Boost Converter Efficiency vs Load Current
VOUT 100 L1 +12V 33µH D1 5mA TO 0.25A (VIN = –5V) 5mA TO 0.7A (V 90 IN = –24V) R4 C3 5mA TO 0.8A (VIN = –48V) VIN SW Z1 121k 47µF 5mA TO 0.9A (VIN = –72V) 80 EN/UVLO RFB C1 70 10µF LT8304 INTV R CC REF D1: DIODES SBR2U150SA L1: WURTH 744771133 EFFICIENCY (%) 60 C2 R5 GND Z1: CENTRAL CMHZ5243B 1µF 10k VIN = –5V VIN 50 VIN = –24V 8304 TA09a –4V TO –80V VIN = –48V VIN = –72V 40 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 LOAD CURRENT (A) 8304 TA09b
–18V to –80VIN/–12VOUT Negative Buck Converter Efficiency vs Load Current
100 C3 47µF 90 D1 Z1 VOUT –12V 10mA TO 1A 80 L1 R1 VIN 33µH 806k 70 EN/UVLO SW C1 R2 R4 LT8304 EFFICIENCY (%) 10µF 71.5k 121k 60 EN/UVLO R D1: DIODES SBR2U150SA FB L1: WURTH 744771133 50 VIN = –24V INTV R CC REF Z1: CENTRAL CMHZ5243B VIN = –48V V C2 R5 IN = –72V 1µF 10k 40 VIN 0 0.2 0.4 0.6 0.8 1.0 8304 TA10a –18V TO –80V LOAD CURRENT (A) 8304 TA10b 8304fa For more information www.linear.com/LT8304 25 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 Package Description Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
TYPICAL APPLICATIONS –4V to –80VIN/12VOUT Buck-Boost Converter Efficiency vs Load Current
VOUT 100 L1 +12V 33µH D1 5mA TO 0.25A (VIN = –5V) 5mA TO 0.7A (V 90 IN = –24V) R4 C3 5mA TO 0.8A (VIN = –48V) VIN SW Z1 121k 47µF 5mA TO 0.9A (VIN = –72V) 80 EN/UVLO RFB C1 70 10µF LT8304 INTV R CC REF D1: DIODES SBR2U150SA L1: WURTH 744771133 EFFICIENCY (%) 60 C2 R5 GND Z1: CENTRAL CMHZ5243B 1µF 10k VIN = –5V VIN 50 VIN = –24V 8304 TA09a –4V TO –80V VIN = –48V VIN = –72V 40 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 LOAD CURRENT (A) 8304 TA09b
–18V to –80VIN/–12VOUT Negative Buck Converter Efficiency vs Load Current
100 C3 47µF 90 D1 Z1 VOUT –12V 10mA TO 1A 80 L1 R1 VIN 33µH 806k 70 EN/UVLO SW C1 R2 R4 LT8304 EFFICIENCY (%) 10µF 71.5k 121k 60 EN/UVLO R D1: DIODES SBR2U150SA FB L1: WURTH 744771133 50 VIN = –24V INTV R CC REF Z1: CENTRAL CMHZ5243B VIN = –48V V C2 R5 IN = –72V 1µF 10k 40 VIN 0 0.2 0.4 0.6 0.8 1.0 8304 TA10a –18V TO –80V LOAD CURRENT (A) 8304 TA10b 8304fa For more information www.linear.com/LT8304 25 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 Package Description Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts