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AIC164250ZBG Datasheet(PDF) 1 Page - Analog Intergrations Corporation |
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AIC164250ZBG Datasheet(HTML) 1 Page - Analog Intergrations Corporation |
1 / 14 page AIC1642 3-Pin One-Cell Step-Up DC/DC Converter Analog Integrations Corporation 4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan DS-1642-01 012102 TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw 1 ■ FEATURES l A Guaranteed Start-Up from less than 0.9 V. l High Efficiency. l Low Quiescent Current. l Less Number of External Components needed. l Low Ripple and Low Noise. l Fixed Output Voltage: 2.7V, 3.0V, 3.3V, and 5V. l Space Saving Packages: SOT-89 and TO-92 ■ APPLICATIONS l Pagers. l Cameras. l Wireless Microphones. l Pocket Organizers. l Battery Backup Suppliers. l Portable Instruments. ■ DESCRIPTION The AIC1642 is a high efficiency step-up DC/DC converter for applications using 1 to 4 battery cells. Only three external components are required to deliver a fixed output voltage of 2.7V, 3.0V, 3.3V, or 5V. The AIC1642 starts up from less than 0.9V input with 1mA load. Pulse Frequency Modulation scheme brings optimized performance for applications with light output loading and low input voltages. The output rip- ple and noise are lower compared with the cir- cuits operating in PSM mode. The PFM control circuit operating in 100KHz (max.) switching rate results in smaller passive components. The space saving SOT-89 and TO-92 packages make the AIC1642 is an ideal choice of DC/DC converter for space conscious applications, like pagers, electronic cameras, and wireless microphones. ■ TYPICAL APPLICATION CIRCUIT D1 GS SS12 VOUT SW GND AIC1642-27 AIC1642-30 AIC1642-33 AIC1642-50 C2 22 µF + VOUT L1 100 µH VIN + C1 47 µF One Cell Step-Up DC/DC Converter |
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