BiCMOS Cold Cathode Fluorescent Lamp Driver Controller The UCC2973PWTR is a power management IC manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Part Number:** UCC2973PWTR
- **Package:** TSSOP (Thin Shrink Small Outline Package)
- **Pin Count:** 20
- **Type:** Power Management IC (PMIC)
- **Function:** Power Factor Correction (PFC) Controller
- **Operating Temperature Range:** Typically -40°C to 85°C (verify datasheet for exact range)
- **Input Voltage Range:** Check datasheet for exact specifications
- **Output Voltage:** Depends on application configuration
- **Switching Frequency:** Adjustable (refer to datasheet for exact range)
### **Descriptions:**
- The UCC2973PWTR is a high-performance PFC controller designed for active power factor correction in AC-DC power supplies.
- It is optimized for continuous conduction mode (CCM) operation.
- Provides improved power factor and reduced harmonic distortion in power supply designs.
### **Features:**
- **Average Current Mode Control:** Ensures stable operation and high power factor.
- **Programmable Switching Frequency:** Allows flexibility in design.
- **Soft-Start Function:** Reduces inrush current during startup.
- **Overvoltage Protection (OVP):** Safeguards against excessive output voltage.
- **Undervoltage Lockout (UVLO):** Ensures proper operation within voltage limits.
- **Low Startup Current:** Enhances efficiency.
- **Zero-Current Detection (ZCD):** Optimizes switching transitions.
For exact electrical characteristics, application circuits, and detailed specifications, refer to the official **Texas Instruments UCC2973PWTR datasheet**.
