We present a quantitative star formation history of the nearby dwarf galaxy UGCA 92 .
This irregular dwarf is situated in the vicinity of the Local Group of galaxies in a zone of strong Galactic extinction ( IC 342 group of galaxies ) .
The galaxy was resolved into stars with HST/ACS including old red giant branch .
We have constructed a model of the resolved stellar populations and measured the star formation rate and metallicity as function of time .
The main star formation activity period occurred about 8 – 14 Gyr ago .
These stars are mostly metal-poor , with a mean metallicity [ Fe/H ] \sim -1.5 – -2.0 dex .
About 84 per cent of the total stellar mass was formed during this event .
There are also indications of recent star formation starting about 1.5 Gyr ago and continuing to the present .
The star formation in this event shows moderate enhancement from \sim 200 Myr to 300 Myr ago .
It is very likely that the ongoing star formation period has higher metallicity of about -0.6 – -0.3 dex .
UGCA 92 is often considered to be the companion to the starburst galaxy NGC 1569 .
Comparing our star formation history of UGCA 92 with that of NGC 1569 reveals no causal or temporal connection between recent star formation events in these two galaxies .
We suggest that the starburst phenomenon in NGC 1569 is not related to the galaxy ’ s closest dwarf neighbours and does not affect their star formation history .