Update: 30 September, 2023
The ST763A series is a 3.3V step-down current mode PWM DC-DC converter. It operates from 3.3V to 11V, providing a fixed 3.3V output voltage and delivering up to 500mA. Its main features are a typical efficiency of 90%, a quiescent current of 0.6mA, and only 0.2µA 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 device are cycle-by-cycle current limiting, overcurrent limiting, under voltage lockout and programmable soft-start protection. A 22µH inductor works in most applications, so no sophisticated design is necessary. Package available is SO-8. Typical applications are in 5V to 3.3V converters, cellular phones, portable instruments, hand-held computers, and peripherals.
File format: PDF
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MD5 Checksum: 1DD46348BC0DFEE8D749BEFD1BF1D4AE
Publication date: 10 August, 2012
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PDF Link: ST ST763A series 3.3V Step down current mode PWM DC-DC converters handbook PDF