UCC28C4x family are high performance current mode PWM controllers featuring 2.3 mA operating current, 25 ns rise and 20 ns fall time rail-to-rail output swings, ±1 A peak output current, 35 ns cycle-by-cycle overcurrent limiting, 1 MHz operation, suitable for switch mode power supplies, DC-DC converters and board mount power modules.
The UCC28C4x‑EP family are high‑performance BiCMOS current‑mode PWM controllers offering low operating current, high‑frequency operation up to 1 MHz, and +1 A peak output capability. They are pin‑for‑pin compatible with the UC284x series and are available in SOIC‑8 and PDIP packages.
The document includes detailed electrical characteristics, pin functions, mechanical dimensions, and application guidance such as soft‑start circuits and oscillator synchronization. It also contains important warranty and safety notices from Texas Instruments.
| Operating current (typical) | 2.3 mA at 52 kHz |
|---|---|
| Peak output current | +1 A |
| Maximum oscillator frequency | 1 MHz |
The COMP pin provides the error‑amplifier output for compensation and can be used as a control port.
The device is offered in SOIC‑8 (D) and PDIP (P) packages.