Datasheet LT8495 (Analog Devices) - 34
| Fabricante | Analog Devices |
| Descripción | SEPIC/Boost Converter with 2A, 70V Switch, 9μA Quiescent Current, POR and Watchdog Timer |
| Páginas / Página | 34 / 34 — TYPICAL APPLICATIONS. 450kHz, Wide Input Range 12V Output SEPIC … |
| Formato / tamaño de archivo | PDF / 1.3 Mb |
| Idioma del documento | Inglés |
TYPICAL APPLICATIONS. 450kHz, Wide Input Range 12V Output SEPIC Converter. No Load Supply Current. Efficiency
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LT8495
TYPICAL APPLICATIONS 450kHz, Wide Input Range 12V Output SEPIC Converter
C3 L1 2.2µF VOUT 10µH D1 V 12V IN • 3V TO 55V 0.2A (V • IN = 3V) (3V TO 32V FOR START-UP) 0.35A (VIN = 4.5V) L2 1M 0.65A (VIN = 12V OR HIGHER) (VOUT RIPPLE C1 10µH C2 MAY INCREASE 2.2µF 10µF ×3 BELOW 6V VIN) SW BIAS 3.09k VIN RSTIN FB SWEN 110k GND CPOR LT8495 CWDT 4.7nF WDO SS WDE µC 1nF RT C1, C3: 2.2µF, 100V, X5R, 1210 RST C2: 10µF, 25V, X5R, 1210 1µF 169k WDI D1: ONSEMI MBRA2H100 L1, L2: COILTRONICS DRQ125-100-R 8495 TA06
No Load Supply Current Efficiency
100 90 VIN = 12V VIN = 5V 85 80 VIN = 24V 80 60 75 Y CURRENT (µA) 40 EFFICIENCY (%) 70 SUPPL 20 WATCHDOG ENABLED 65 WATCHDOG DISABLED 0 60 0 10 20 30 40 50 60 0.0 0.1 0.2 0.3 0.4 0.5 0.6 INPUT VOLTAGE (V) LOAD CURRENT (A) 8495 TA06C 8495 TA06b
RELATED PARTS PART NUMBER DESCRIPTION COMMENTS
LT8494 70V, 2A Boost/SEPIC 1.5MHz High Efficiency DC/DC VIN(MIN) = 2.5V, VIN(MAX) = 32V, VOUT(MIN) = 70V, IQ = 9µA, ISD = <1µA, Converter 4mm × 4mm QFN-20, TSSOP-20E Packages LT3580 42V, 2A Boost/Inverting 2.5MHz High Efficiency DC/DC VIN: 2.5V to 32V, VOUT(MAX) = ±40V, IQ = 1mA, ISD < 1µA, Converter 3mm × 3mm DFN-8, MSOP-8E Packages LT8580 65V, 1A Boost/Inverting DC/DC Converter VIN: 2.55V to 40V, VOUT(MAX) = ±60V, IQ = 1.2mA, ISD < 1µA, 3mm × 3mm DFN-8, MSOP-8E Packages LT8570/LT8570-1 65V, 500mA/250mA Boost/Inverting DC/DC Converter VIN(MIN) = 2.55V, VIN(MAX) = 40V, VOUT(MIN) = ±60V, IQ = 1.2mA, ISD = <1µA, 3 × 3 DFN-8, MSOP-8E Package LT8582 40V, Dual 3A, 2.5MHz High Efficiency Boost Converter VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 2.8µA, ISD < 1µA, 7mm × 4mm DFN-24 Package LT8471 40V, Dual 3A, Multitopology High Efficiency DC/DC Converter VIN: 2.6V to 50V, VOUT(MAX) = ±45V, IQ = 2.4mA, ISD < 1µA, TSOP-20E Package LT3581 40V, 3.3A, 2.5MHz High Efficiency Boost Converter VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 1mA, ISD < 1µA, 4mm × 3mm DFN-14, MSOP-16E Packages LT8582 40V, Dual 3A Boost, Inverter, SEPIC, 2.5MHz High Efficiency VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 2.1mA, ISD < 1µA, Boost Converter 7mm × 4mm DFN-24 Package LT3579/LT3579-1 40V, 3.3A Boost, Inverter, SEPIC, 2.5MHz High Efficiency VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 1mA, ISD < 1µA, Boost Converter 4mm × 5mm QFN-20, TSSOP-20E Packages 8495fb 34 LT 0617 REV B • PRINTED IN USA www.linear.com/LT8495 For more information www.linear.com/LT8495 LINEAR TECHNOLOGY CORPORATION 2015 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Revision History Typical Applications Related Parts
TYPICAL APPLICATIONS 450kHz, Wide Input Range 12V Output SEPIC Converter
C3 L1 2.2µF VOUT 10µH D1 V 12V IN • 3V TO 55V 0.2A (V • IN = 3V) (3V TO 32V FOR START-UP) 0.35A (VIN = 4.5V) L2 1M 0.65A (VIN = 12V OR HIGHER) (VOUT RIPPLE C1 10µH C2 MAY INCREASE 2.2µF 10µF ×3 BELOW 6V VIN) SW BIAS 3.09k VIN RSTIN FB SWEN 110k GND CPOR LT8495 CWDT 4.7nF WDO SS WDE µC 1nF RT C1, C3: 2.2µF, 100V, X5R, 1210 RST C2: 10µF, 25V, X5R, 1210 1µF 169k WDI D1: ONSEMI MBRA2H100 L1, L2: COILTRONICS DRQ125-100-R 8495 TA06
No Load Supply Current Efficiency
100 90 VIN = 12V VIN = 5V 85 80 VIN = 24V 80 60 75 Y CURRENT (µA) 40 EFFICIENCY (%) 70 SUPPL 20 WATCHDOG ENABLED 65 WATCHDOG DISABLED 0 60 0 10 20 30 40 50 60 0.0 0.1 0.2 0.3 0.4 0.5 0.6 INPUT VOLTAGE (V) LOAD CURRENT (A) 8495 TA06C 8495 TA06b
RELATED PARTS PART NUMBER DESCRIPTION COMMENTS
LT8494 70V, 2A Boost/SEPIC 1.5MHz High Efficiency DC/DC VIN(MIN) = 2.5V, VIN(MAX) = 32V, VOUT(MIN) = 70V, IQ = 9µA, ISD = <1µA, Converter 4mm × 4mm QFN-20, TSSOP-20E Packages LT3580 42V, 2A Boost/Inverting 2.5MHz High Efficiency DC/DC VIN: 2.5V to 32V, VOUT(MAX) = ±40V, IQ = 1mA, ISD < 1µA, Converter 3mm × 3mm DFN-8, MSOP-8E Packages LT8580 65V, 1A Boost/Inverting DC/DC Converter VIN: 2.55V to 40V, VOUT(MAX) = ±60V, IQ = 1.2mA, ISD < 1µA, 3mm × 3mm DFN-8, MSOP-8E Packages LT8570/LT8570-1 65V, 500mA/250mA Boost/Inverting DC/DC Converter VIN(MIN) = 2.55V, VIN(MAX) = 40V, VOUT(MIN) = ±60V, IQ = 1.2mA, ISD = <1µA, 3 × 3 DFN-8, MSOP-8E Package LT8582 40V, Dual 3A, 2.5MHz High Efficiency Boost Converter VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 2.8µA, ISD < 1µA, 7mm × 4mm DFN-24 Package LT8471 40V, Dual 3A, Multitopology High Efficiency DC/DC Converter VIN: 2.6V to 50V, VOUT(MAX) = ±45V, IQ = 2.4mA, ISD < 1µA, TSOP-20E Package LT3581 40V, 3.3A, 2.5MHz High Efficiency Boost Converter VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 1mA, ISD < 1µA, 4mm × 3mm DFN-14, MSOP-16E Packages LT8582 40V, Dual 3A Boost, Inverter, SEPIC, 2.5MHz High Efficiency VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 2.1mA, ISD < 1µA, Boost Converter 7mm × 4mm DFN-24 Package LT3579/LT3579-1 40V, 3.3A Boost, Inverter, SEPIC, 2.5MHz High Efficiency VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 1mA, ISD < 1µA, Boost Converter 4mm × 5mm QFN-20, TSSOP-20E Packages 8495fb 34 LT 0617 REV B • PRINTED IN USA www.linear.com/LT8495 For more information www.linear.com/LT8495 LINEAR TECHNOLOGY CORPORATION 2015 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Revision History Typical Applications Related Parts