| Image | Manufacturer | Part Number | Description |
| | STMicroelectronics | SG3525AN | Voltage Mode PWM Controller 400mA 16-Pin PDIP Tube |
 | STMicroelectronics | SG3525AP | Voltage Mode PWM Controller 500mA 16-Pin SO N |
 | Microsemi | SG3526BN | Voltage Mode PWM Controller 100mA 16-Pin CDIP |
 | Microsemi | SG2526BN | Voltage Mode PWM Controller 100mA 18-Pin PDIP |
 | ON Semiconductor | TL494BDR2G | Voltage Mode PWM Controller 500mA 16-Pin SOIC T/R |
 | ON Semiconductor | TL594CNG | Voltage Mode PWM Controller 500mA 16-Pin PDIP Rail |
 | ON Semiconductor | TL494BDG | Voltage Mode PWM Controller 500mA 16-Pin SOIC Rail |
 | ON Semiconductor | NCP1562ADR2G | Voltage Mode PWM Controller 20V 2A/1A 16-Pin SOIC T/R |