Specs side by side
2 parts compared · 0 differing specs across 5 total parameters.
| Parameter | ||
|---|---|---|
| Case | DIP-16 / SOIC-16 | DIP-16 / SOIC-16 |
| Component Category | PWM Controllers (Push-Pull / ATX) | PWM Controllers (Push-Pull / ATX) |
| Market Reality | The TL494 is the PWM heart of classic ATX supplies, inverters, welders and battery chargers - a 16-pin voltage-mode controller whose real-world identity is a family: KA7500B, MB3759 and IR3M02 are pin-for-pin clones, and repair benches swap them daily. Two traps live here. The first is quality drift inside the clone family - the cheaper suffix revisions (7500C and similar) have documented poorer oscillator and drive behavior, and a supply that squeals under load after a cheap swap is the classic symptom. The second is the SG3525, a functionally similar controller that is not pin-compatible and keeps getting treated as one. | The TL494 is the PWM heart of classic ATX supplies, inverters, welders and battery chargers - a 16-pin voltage-mode controller whose real-world identity is a family: KA7500B, MB3759 and IR3M02 are pin-for-pin clones, and repair benches swap them daily. Two traps live here. The first is quality drift inside the clone family - the cheaper suffix revisions (7500C and similar) have documented poorer oscillator and drive behavior, and a supply that squeals under load after a cheap swap is the classic symptom. The second is the SG3525, a functionally similar controller that is not pin-compatible and keeps getting treated as one. |
| Role In Circuit | Original Reference Part | Original Reference Part |
| Sourcing Status | Active Shenzhen Spot Sourcing (24–48h) | Active Shenzhen Spot Sourcing (24–48h) |