BiCMOS Cold Cathode Fluorescent Lamp Driver Controller

Design goals for a Cold Cathode Fluorescent Lamp (CCFL) converter used in a notebook computer or portable application include small size, high efficiency, and low cost. The UCC3972 3 CCFL Controllers provide the necessary circuit blocks to implement a highly efficient CCFL backlight power supply in a small footprint 8 pin TSSOP package. The BiCMOS controllers typically consume less than 1mA of operating current, improving overall system efficiency when compared to bipolar controllers requiring 5mA to 10mA of operating current.
External parts count is minimized and system cost is reduced by integrating such features as a feedback controlled PWM driver stage, open lamp protection, startup delay and synchronization circuitry between the buck and push-pull stages. The UCC3972 3 include an internal Shunt Regulator allowing the part to operate with input voltages from 4.5V up to 25V. The part supports both Analog and externally generated low frequency dimming modes of operation.
The UCC3973 adds a programmable voltage clamp at the BUCK pin. This feature CAN be used to protect the transformer from overvoltage during startup or when an open lamp occurs. Transformer voltage is controlled by reducing duty cycle when an over-voltage is detected.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
UCC2972PWG4 Texas Instruments BiCMOS Cold Cathode Fluorescent Lamp Driver Controller 8-TSSOP -40 to 85
UCC2972NG4 Texas Instruments IC FLUORESCENT LIGHT CONTROLLER, 160 kHz SWITCHING FREQ-MAX, PDIP8, GREEN, PLASTIC, DIP-8, Switching Regulator or Controller
UCC2972PW Texas Instruments BiCMOS Cold Cathode Fluorescent Lamp Driver Controller 8-TSSOP -40 to 85
UCC2972N Texas Instruments FLUORESCENT LIGHT CONTROLLER, 160kHz SWITCHING FREQ-MAX, PDIP8, GREEN, PLASTIC, DIP-8
UCC2972 's PackagesUCC2972 's pdf datasheet
UCC2972N PDIP
UCC2972NG4 PDIP
UCC2972PW TSSOP
UCC2972PWG4 TSSOP
UCC2972PWTRG4 TSSOP




UCC2972 Pinout, Pinouts
UCC2972 pinout,Pin out
This is one package pinout of UCC2972,If you need more pinouts please download UCC2972's pdf datasheet.

UCC2972 Application circuits
UCC2972 circuits
This is one application circuit of UCC2972,If you need more circuits,please download UCC2972's pdf datasheet.


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