UC3844DTRIC REG CTRLR PWM CM 14-SOIC|TEXAS INSTRUMENTS|Lead free|RoHS Compliant UC3844AD UC3844BDR2G UC3844BDR2G UC3844BVDR2G UC3844DTRG4IC REG CTRLR PWM CM 14-SOIC|TEXAS INSTRUMENTS|Lead free|RoHS Compliant UC3844AD UC3844BDR2G UC3844BDR2G UC3844BVDR2G