Hallo, Seeking the datasheet for the IC 1803E. The IC is incorporated into an LED Solar - light with a 1.2V - battery.
http://www.ugcs.caltech.edu/~presheti/stuff/projects/solar_led/images/solar-led.png could be a JD1803 http://www.hobbielektronika.hu/forum/getfile.php?id=135277 JD1803 "JD1803 is a specially developed to boost solar energy lawn lamp drive circuit with stable and reliable quality."
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