The MP3430 is a monolithic step-up converter with an integrated power switch and a biased avalanche-photodiode (APD) current monitor. The output voltage can be doubled by design through the APD’s optical receivers. The MP3430 can provide up to 90V output.
The MP3430 uses a current-mode, fixed-frequency architecture to regulate the output voltage and provide a fast transient response and cycle-by-cycle current limit. The MP3430 features two accurate APD current-monitoring outputs with 1:10 and 1:2 ratios, respectively. Resistor-adjustable current limiting protects the APD from optical power transients.
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