UC3843BNG
onsemiUC3843BNG is the PDIP-8 through-hole order code for onsemi's UC3843B current-mode PWM controller — for offline flyback and forward converters, adapter power supplies and legacy control boards built around the UC384x architecture. The 8.4 V / 7.6 V undervoltage lockout with a maximum duty cycle of 96% typical (94% minimum guaranteed; the onsemi electrical table specifies no maximum) is the selection point: the low start-up threshold suits self-powered offline designs where the SOIC sibling is already qualified. Selection advice: the trailing G is onsemi's current Pb-free suffix — the plain UC3843BN code without the G is the legacy pre-Pb-free order code, so quote and order against UC3843BNG for current production. onsemi lists the code as Active in tube packing, commercial temperature grade (0 to +70 °C class, per the UC384xB device table). For surface-mount builds the SOIC-8 UC3843BD1R2G is on this site; the two packages are not interchangeable on the same footprint. Parameters verified against the onsemi UC3843B product page and datasheet ordering table.
- MPN
- UC3843BNG
- Manufacturer
- onsemi
- Family
- Current-mode PWM controller
- Package
- PDIP-8
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