TL3842DE4-8IC REG CTRLR BST FLYBK PWM 8SOIC|TEXAS INSTRUMENTS|Lead free|RoHS Compliant UC3843AD1013TR E-UC3843BD1013TR E-UC2842BD1 E-UC2843BD1013TR SG2842DM SG2843DM SG3842DM UC2842BD1 UC2843BD1 UC2842ADM UC2842BD1G UC2843BD1G UC2843BD1G