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ST763ACDTR Datasheet(PDF) 1 Page - STMicroelectronics |
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ST763ACDTR Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 10 page  1/10 November 2000 s OUTPUT VOLTAGE 3.3V s SUPPLY VOLTAGE RANGE FROM 3.3V TO 11V s GUARANTEED OUTPUT CURRENT: 500mA s TYPICAL OPERATION FREQUENCY: 200KHz s VERY LOW QUIESCENT CURRENT: 0.6mA ON MODE 0.2 µA OFF MODE s SWITCH ON/OFF CONTROL s TYPICAL EFFICENCY: 90% s OPERATING TEMPERATURE RANGE: -40°C TO 85°C s AVAILABLE IN SO-8 AND DIP-8 PACKAGES DESCRIPTION The ST763A is a step-down switching regulator . It operates from 3.3V to 11V giving a fixed 3.3V output voltage, delivering up to 500mA. The mainly features are typical efficiency of 90%, quiescent current of 0.6mA, and only 0.2 µA in shut-down. The PWM current mode control provides precise output regulation and very good transient response. Output voltage accuracy is guaranteed to be ±5% over line, load and temperature variations. A minimum number of external components is used and the fixed frequency switching allows easy filtering of output ripple and noise. Other features of this ddevice are cycle-by-clicle current limiting, overcurrent limiting, under voltage lockout and programmable soft-start protection. A 22 µH inductor works in most applications, so no sophisticated design is necessary. Package available are SO-8 and DIP-8. Typical application are in 5V to 3.3V converters, cellular phones, portable instruments, hand-held computers, and peripherals. ST763A SERIES 3.3V STEP DOWN CURRENT MODE PWM DC-DC CONVERTERS SCHEMATIC DIAGRAM DIP-8 SO-8 |
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