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APW7079-50DI-TRG Datasheet(PDF) 1 Page - Anpec Electronics Coropration |
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APW7079-50DI-TRG Datasheet(HTML) 1 Page - Anpec Electronics Coropration |
1 / 15 page Copyright © ANPEC Electronics Corp. Rev. A.3 - Oct., 2008 APW7079 www.anpec.com.tw 1 ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Low-Supply-Current Synchronous Step-up DC-DC Converter Features • 0.9V Typical Start-up Input Voltage • 11 µA Typical No Load Quiescent Current • PFM Operation • High Efficiency up to 92% • Fixed 1.8V, 2.6V, 2.8V, 3V, 3.3V, 3.8V, 4.5V or 5V Output Voltage • 600mA Internal Switch Current • Internal Synchronous Rectifier • SOT-89 Package • Lead Free and Green Devices Available (RoHS Compliant) Applications General Description The APW7079 is a compact, PFM mode, and step-up DC-DC converter with low quiescent current. The inter- nal synchronous rectifier reduces cost and PCB space by eliminating the need for an external Schottky diode. Low on-resistance of the internal switches improves the efficiency up to 92%. The start-up voltage is guaranteed below 1V. After start-up, the device can operate with input voltage down to 0.7V. The APW7079 is suitable for por- table battery-powered applications. Consuming only 11 µA quiescent current and an optimized control scheme al- lows the device to operate at very high efficiency over the entire load current range. • Toy • Wireless Mouse • Portable Instrument Simplified Application Circuit Pin Configuration Top View LX VOUT GND V IN V OUT APW7079 L1 22 µH C2 47 µF C1 22 µF I IN I OUT Output Current, I OUT (mA) Efficiency vs. Output Current 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 V IN=2.4V V IN=1.5V V IN=1.2V V IN=1.0V V IN=0.9V APW7079-30 SOT89 |
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