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AIC1640-30CN Datasheet(PDF) 1 Page - Analog Intergrations Corporation |
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AIC1640-30CN Datasheet(HTML) 1 Page - Analog Intergrations Corporation |
1 / 2 page ADVANCE INFORMATION AIC1640 LOW VOLTAGE STEP-UP DC/DC CONVERTER SPEC NO: DS-1640-P1 ANALOG INTEGRATIONS CORPORATION www.analog.com.tw 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. TEL: (8863)577-2500 FAX:(8863)577-2510 1 ■ ■ ■ ■ FEATURES Guaranteed Start-Up from Below 0.9 V. High Efficiency. Low Quiescent Current. Fixed or adjustable Output Voltage. Logic Controlled Shutdown. External Switch Driver available. ■ ■ ■ ■ APPLICATIONS Pagers. Cameras. Wireless Microphones. Pocket Organizers. Battery Backup Suppliers. Portable Instruments. ■ ■ ■ ■ DESCRIPTION The AIC1640 is a high efficiency step-up DC/DC converter for applications using 1 to 4 battery cells. Only three external components are required to de- liver a fixed output voltage of 3V, 3.3V, or 5V. Pulse Frequency Modulation scheme brings opti- mized performance for applications with light output loading and low input voltage. The output ripple and noise are lower compared with the circuit op- erating in PSM mode. The AIC1640 starts up from below 0.9V input to boost either 3V, 3.3V, or 5V output with 1mA load. Some useful features include external driver for higher power level applications, shutdown mode for saving the life of battery, and adjustable output ver- sion. The PFM control circuit operates in 100KHz (max.) switching rate, resulting in smaller passive component size, which makes the AIC1640 an ide- al choice of DC/DC converter for space conscious applications. ■ ■ ■ ■ TYPICAL APPLICATION CIRCUIT + C1 22 µF L1 88 µH D1 SB02-03C AIC1640 GND CE NC SW EXT VDD VOUT 3.3V VIN NC NC ≧0.9V R1 300 C1 10nF Q1 2SD2150 + C2 100 µF L1 33 µH D1 1N5819 VOUT 3.3V/100mA VIN AIC1640 GND CE NC SW EXT VDD NC NC ≧0.9V 3.3V Output Step-Up DC/DC Converter 3.3V/100mA Step-Up DC/DC Converter |
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