Found 7 alternatives for KA3501 by onsemi. Pmic Power Supply Controllers Monitors — 14-DIP (0.300", 7.62mm).
1.8A, 500KHZ BICMOS, PDIP14
IC SECONDARY SIDE CTRLR 14DIP
IC SECONDARY SIDE CTRLR 14DIP
POWER SUPPLY CIRCUIT, FIXED
IC SECONDARY SIDE CTRLR 14DIP
IC SECONDARY SIDE CTRLR 14DIP
IC POWER SUPPLY CONTROLLER 14DIP