The UCC3972 is a BiCMOS Cold Cathode Fluorescent Lamp (CCFL) controller designed for notebook computer and portable backlight power supplies. It features an internal shunt regulator allowing operation from 4.5V to 25V, feedback-controlled PWM driver stage, open lamp protection, and programmable startup delay. The device is designed to synchronize PWM frequency to an external resonant tank and supports both analog and low-frequency dimming modes.
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Texas Instruments UCC3972 technical specifications.
| Input Voltage (Min) | 4.5V |
| Input Voltage (Max) | 25V |
| Supply Current (Typical) | 1mA |
| Frequency (Min) | 80kHz |
| Frequency (Max) | 160kHz |
| Operating Temperature (Min) | 0°C |
| Operating Temperature (Max) | 70°C |
| Number of Channels | 1count |
| RoHS | RoHS3 Compliant |
| Moisture Sensitivity Level | 2 (1 Year) |
| REACH | Affected |
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