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AAT1265IJS-3.3-T1 Datasheet(PDF) 1 Page - Advanced Analogic Technologies |
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AAT1265IJS-3.3-T1 Datasheet(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 13 page  General Description The AAT1265 is a member of Analogic Tech's Total Power Management IC™ (TPMIC™) product family and is designed for single-cell or dual-cell alkaline, NiMH, or NiCd battery-powered applications. It is a high efficiency, synchronous, fixed frequency, step- up converter with true output disconnect during shutdown (<1.0µA), start-up inrush current limit, and short-circuit protection. The high 2MHz switching frequency and completely integrated control circuitry minimize the total solution footprint area while maintaining excellent regulation, ripple, and transient response throughout the full load range. Light load switching frequency modulation and low quiescent current maintain high efficiency perform- ance for light load and sleep mode conditions. With a 1A peak switch current limit, the AAT1265 is capable of delivering 100mA to a 3.3V load with a single AA cell or up to 250mA from a dual AA cell. The device has a 1.0V start-up voltage with opera- tion down to 0.8V. The AAT1265 is available in a Pb-free, space-sav- ing 2.0x2.1mm 8-pin SC70JW package and is rated over the -40°C to +85°C temperature range. Features • 100mA Output from a Single AA Cell Input • 250mA Output from a Dual AA Cell Input •VIN Operation Range: 0.8V to VOUT • Up to 93% Efficiency • Low Start-Up Voltage: 1.0V Typical • Internal Synchronous Rectifier • Current Mode Control with Internal Feedback and Compensation • 2MHz Fixed Switching Frequency • 1A Current Limit • Maintains High Efficiency Over the Output Current Range for Improved Battery Life • Low 40µA No Load Bias Current • True Load Disconnect • Short-Circuit and Over-Current Protection • Inrush Current Limit and Soft Start • Low Shutdown Current: <1.0µA • -40°C to +85°C Temperature Range • 2.0x2.1mm SC70JW-8 Package Applications • Bluetooth™ Headsets • Digital Cameras • Medical Instruments • Mobile Handsets • MP3 and Portable Music Players AAT1265 Low Voltage 2MHz Step-Up DC/DC Converter in SC70JW Package Typical Application Dual-Cell to 3.3V Efficiency vs. Output Current Output Current (mA) 50 60 70 80 90 100 0.1 1.0 10.0 100.0 1000.0 VIN = 3.0V VIN = 2.4V VIN = 2.0V 2.2µH 4.7µF 4.7µF VIN VOUT VCC EN VIN LX OUT GND AAT1265 1265.2006.05.1.1 1 SwitchReg™ |
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