Texas Instruments UCC3972PWTRG4
- Part Number:
- UCC3972PWTRG4
- Manufacturer:
- Texas Instruments
- Ventron No:
- 3260317-UCC3972PWTRG4
- Description:
- IC CCFL DRIVER CONTROLLER 8TSSOP
- Datasheet:
- UCC3972PWTRG4
Description
The UCC3972/3 BICMOS Cold Cathode Fluorescent Lamp (CCFL) controllers are designed for use in notebook computers and portable applications. They provide the necessary circuit blocks to implement a highly efficient CCFL backlight power supply in a small footprint 8-pin TSSOP package. The controllers typically consume less than 1mA of operating current, improving overall system efficiency.
The UCC3972/3 controllers integrate features such as a feedback-controlled PWM driver stage, open lamp protection, startup delay, and synchronization circuitry between the buck and push-pull stages. They include an internal shunt regulator, allowing them to operate with input voltages from 4.5V to 25V. The controllers support both analog and externally generated low-frequency dimming modes of operation.
The UCC3973 adds a programmable voltage clamp at the BUCK pin to protect the transformer from overvoltage during startup or when an open lamp occurs.
Features
1mA typical supply current
Accurate lamp current control
Analog or low-frequency dimming capability
Open lamp protection
Programmable startup delay
4.5V to 25V operation
PWM frequency synchronized to external resonant tank
8-pin TSSOP and SOIC packages available
Internal voltage clamp protects transformer from over-voltage (UCC3973)
Applications
Notebook computers
Portable applications
CCFL backlight power supplies
The UCC3972/3 BICMOS Cold Cathode Fluorescent Lamp (CCFL) controllers are designed for use in notebook computers and portable applications. They provide the necessary circuit blocks to implement a highly efficient CCFL backlight power supply in a small footprint 8-pin TSSOP package. The controllers typically consume less than 1mA of operating current, improving overall system efficiency.
The UCC3972/3 controllers integrate features such as a feedback-controlled PWM driver stage, open lamp protection, startup delay, and synchronization circuitry between the buck and push-pull stages. They include an internal shunt regulator, allowing them to operate with input voltages from 4.5V to 25V. The controllers support both analog and externally generated low-frequency dimming modes of operation.
The UCC3973 adds a programmable voltage clamp at the BUCK pin to protect the transformer from overvoltage during startup or when an open lamp occurs.
Features
1mA typical supply current
Accurate lamp current control
Analog or low-frequency dimming capability
Open lamp protection
Programmable startup delay
4.5V to 25V operation
PWM frequency synchronized to external resonant tank
8-pin TSSOP and SOIC packages available
Internal voltage clamp protects transformer from over-voltage (UCC3973)
Applications
Notebook computers
Portable applications
CCFL backlight power supplies
Texas Instruments UCC3972PWTRG4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments UCC3972PWTRG4.
- Mounting TypeSurface Mount
- Package / Case8-TSSOP (0.173, 4.40mm Width)
- Surface MountYES
- Number of Pins8
- Operating Temperature0°C~70°C
- PackagingTape & Reel (TR)
- JESD-609 Codee4
- Part StatusNot For New Designs
- Moisture Sensitivity Level (MSL)2 (1 Year)
- Number of Terminations8
- ECCN CodeEAR99
- Terminal FinishNickel/Palladium/Gold (Ni/Pd/Au)
- SubcategorySwitching Regulator or Controllers
- TechnologyBICMOS
- Voltage - Supply4.5V~20V
- Terminal PositionDUAL
- Terminal FormGULL WING
- Peak Reflow Temperature (Cel)260
- Number of Functions1
- Terminal Pitch0.65mm
- Frequency80kHz~160kHz
- Base Part NumberUCC3972
- Pin Count8
- Input Voltage-Nom12V
- Operating Supply Current7mA
- Nominal Supply Current7mA
- Output Current100mA
- Input Voltage (Min)4.5V
- Control ModeCURRENT-MODE
- Input Voltage (Max)25V
- Control TechniquePULSE WIDTH MODULATION
- Switcher ConfigurationCURRENT FED PUSH-PULL
- DimmingNo
- Height Seated (Max)1.2mm
- Length4.4mm
- Width3mm
- RoHS StatusROHS3 Compliant
- Lead FreeLead Free
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