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Datasheet LT8494 (Analog Devices) - 26

ПроизводительAnalog Devices
ОписаниеSEPIC/Boost DC/DC Converter with 2A, 70V Switch, and 7μA Quiescent Current
Страниц / Страница26 / 26 — TYPICAL APPLICATION. 450kHz, Wide Input Range 12V Output SEPIC Converter. …
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Язык документаанглийский

TYPICAL APPLICATION. 450kHz, Wide Input Range 12V Output SEPIC Converter. Efficiency. No-Load Supply Current

TYPICAL APPLICATION 450kHz, Wide Input Range 12V Output SEPIC Converter Efficiency No-Load Supply Current

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LT8494
TYPICAL APPLICATION 450kHz, Wide Input Range 12V Output SEPIC Converter Efficiency
90 VIN = 12V VIN = 5V 85 VIN = 24V 80 C3 75 L1 2.2µF D1 10µH VIN • VOUT EFFICIENCY (%) 70 3V TO 55V • 12V (3V TO 32V L2 0.2A (VIN = 3V) FOR START-UP) 10µH 0.35A (VIN = 5V) 65 0.65A (VIN > 12V) (VOUT RIPPLE MAY INCREASE 60 BELOW 6V V 0.0 0.1 0.2 0.3 0.4 0.5 0.6 IN) V SW IN BIAS C2 LOAD CURRENT (A) SWEN 10µF 1M ×3 8494 TA06b C1 PG LT8494 2.2µF RT FB SS GND
No-Load Supply Current
169k 100 1µF 110k 8494 TA06a 80 C1, C3: 2.2µF, 100V, X5R, 1210 C2: 10µF, 25V, X5R, 1210 D1: ONSEMI MBRA2H100 60 L1, L2: COILTRONICS DRQ125-100-R Y CURRENT (µA) 40 SUPPL 20 0 0 10 20 30 40 50 60 INPUT VOLTAGE (V) 8494 TA06c
RELATED PARTS PART NUMBER DESCRIPTION COMMENTS
LT8495 70V, 2A Boost/SEPIC 1.5MHz High Efficiency DC/DC Converter with VIN: 2.5V to 32V, VOUT(MAX) = 70V, IQ = 9µA, ISD < 1µA, POR and Watchdog Timer 4mm × 4mm QFN20, TSSOP-20E Packages LT3580 42V, 2A Boost/Inverting 2.5MHz High Efficiency DC/DC Converter VIN: 2.5V to 32V, VOUT(MAX) = ±40V, IQ = 1mA, ISD < 1µA, 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/ 65V, 500mA/250mA Boost/Inverting DC/DC Converter VIN: 2.55V to 40V, VOUT(MAX) = ±60V, IQ = 1.2mA, ISD < 1µA, LT8570-1 3mm × 3mm DFN-8, MSOP-8E Packages LT8582 40V, Dual 3A, 2.5MHz High Efficiency Boost Converter VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 2.8mA, 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, TSSOP-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 Boost VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 2.1mA, ISD < 1µA, Converter 7mm × 4mm DFN-24 Package LT3579/ 40V, 3.3A Boost, Inverter, SEPIC, 2.5MHz High Efficiency Boost VIN: 2.5V to 40V, VOUT(MAX) = ±40V, IQ = 1mA, ISD < 1µA, LT3579-1 Converter 4mm × 5mm QFN-20, TSSOP-20E Packages 8494fa 26 LT 0617 REV A • PRINTED IN USA www.linear.com/LT8494 For more information www.linear.com/LT8494 LINEAR TECHNOLOGY CORPORATION 2015 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Related Parts
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