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APW7290QBI-TRL Datasheet(PDF) 1 Page - Anpec Electronics Coropration |
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APW7290QBI-TRL Datasheet(HTML) 1 Page - Anpec Electronics Coropration |
1 / 18 page Copyright © ANPEC Electronics Corp. Rev. A.2 - Jun., 2013 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. 1.5MHz, 1A Synchronous Buck Regulator APW7290 Features General Description • 1A Output Current • Support 4 AA alkaline, NiCd or NiMH batteries • Wide 3.5V~7.2V Input Voltage • Fixed 1.5MHz Switching Frequency • Low Dropout Operating at 100% duty cycle • Low 25 µA Quiescent Current • Integrate Synchronous Rectifier • 0.6V Low Reference Voltage • <0.5 µA Input Current during Shutdown • Current-Mode Operation with Internal Compensation - Stable with Ceramic Output Capacitors - Fast Line Transient Response • Short-Circuit Protection • Over-Temperature Protection with Hysteresis • Available in TDFN2x2-8 Package • Lead Free and Green Devices Available (RoHS Compliant) The APW7290 is a high efficiency monolithic synchro- nous buck regulator. APW7290 operates with a constant 1.5MHz switching frequency and using the inductor cur- rent as a controlled quantity in the current mode architecture. The 3.5V to 7.2V input voltage range makes the APW7290 ideally suited for single Li-Ion battery pow- ered applications. 100% duty cycle provides low dropout operation, extending battery life in portable electrical devices. The internally fixed 1.5MHz operating frequency allows the use of small surface mount inductors and capacitors. The synchronous switches included inside increase the efficiency and eliminate the need for an ex- ternal Schottky diode. The APW7290 is available in TDFN2x2-8 package. Applications • E-Book • Toy • Portable Instrument Pin Configuration TDFN2x2-8 (Top View) 1 6 5 4 3 2 8 7 LBO VOUT SW FB VIN LBI RUN GND Simplified Application Circuit VIN GND LBI 1 FB 5 APW7290 SW 3 VIN VOUT L1 R2 2 R1 C1 C2 ON OFF RUN 4 VOUT R3 Low Battery Output LBO R4 R5 6 7 8 |
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