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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AAT1143 датащи(PDF) 1 Page - Advanced Analogic Technologies |
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AAT1143 датащи(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 20 page  AAT1143 1MHz 400mA Step-Down Converter 1143.2006.07.1.10 1 SwitchReg™ General Description The AAT1143 SwitchReg™ is a 1MHz step-down converter with an input voltage range of 2.7V to 5.5V and output as low as 0.6V. Its low supply cur- rent, small size, and high switching frequency make the AAT1143 the ideal choice for portable applications. The AAT1143 is available in either a fixed version with internal feedback or a programmable version with external feedback resistors. It can deliver 400mA of load current while maintaining a low 25μA no load quiescent current. The 1MHz switch- ing frequency minimizes the size of external com- ponents while keeping switching losses low. The AAT1143 feedback and control delivers excellent load regulation and transient response with a small output inductor and capacitor. The AAT1143 is designed to maintain high efficien- cy throughout the operating range, which is critical for portable applications. The AAT1143 is available in a space-saving 2.0x2.1mm SC70JW-8 package and is rated over the -40°C to +85°C temperature range. Features •VIN Range: 2.7V to 5.5V •VOUT Adjustable Down to 0.6V — Fixed or Adjustable Version •25μA No Load Quiescent Current • Up to 95% Efficiency • 400mA Max Output Current • 1MHz Switching Frequency • Soft Start • Over-Temperature Protection • Current Limit Protection • 100% Duty Cycle Low-Dropout Operation • 0.1μA Shutdown Current • SC70JW-8 Package • Temperature Range: -40°C to +85°C Applications • Cellular Phones • Digital Cameras • Handheld Instruments • Microprocessor / DSP Core / IO Power • PDAs and Handheld Computers • USB Devices Typical Application (Fixed Output Voltage) Efficiency vs. Load Current (VOUT = 2.5V; VIN = 3.3V) Output Current (mA) 60 65 70 75 80 85 90 95 100 0.1 1 10 100 1000 4.7 μH L1 4.7 μF C1 4.7 μF C2 EN 1 OUT 2 VIN 3 LX 4 AGND 5 PGND 6 PGND 7 PGND 8 AAT1143 U1 VIN VO |
Аналогичный номер детали - AAT1143_06 |
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Аналогичное описание - AAT1143_06 |
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