UCC25705 Series
15V voltage mode 4MHz PWM controller with 8.8V/8.0V UVLO , -40C to 85C
Manufacturer: Texas Instruments
Catalog(5 parts)
| Part | Topology | Supplier Device Package | Operating Temperature▲▼ | Operating Temperature▲▼ | Package / Case▲▼ | Package / Case | Output Type | Function | Duty Cycle (Max)▲▼ | Output Phases▲▼ | Clock Sync▲▼ | Output Configuration | Synchronous Rectifier▲▼ | Number of Outputs▲▼ | Frequency - Switching▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Mounting Type | Package / Case▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments UCC25705DTRBoost, Flyback, Forward Converter Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC | Boost, Flyback, Forward Converter | 8-SOIC | 85 °C | -40 °C | 0.003899999894201755 m | 8-SOIC | Transistor Driver | Step-Up, Step-Up/Step-Down | 0.9300000071525574 ul | 1 ul | Isolation Capable, Positive | 1 ul | 1000000 Hz | 8.199999809265137 V | 15 V | Surface Mount | |||
Texas Instruments UCC25705DGKTRBoost, Flyback, Forward Converter Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-VSSOP | Boost, Flyback, Forward Converter | 85 °C | -40 °C | 0.0029972000047564507 m | 8-MSOP, 8-TSSOP | Transistor Driver | Step-Up, Step-Up/Step-Down | 0.9300000071525574 ul | 1 ul | Isolation Capable, Positive | 1 ul | 1000000 Hz | 8.199999809265137 V | 15 V | Surface Mount | 0.003000000026077032 m | |||
Texas Instruments UCC25705PG4Boost, Flyback, Forward Converter Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-PDIP | Boost, Flyback, Forward Converter | 8-PDIP | 85 °C | -40 °C | 0.007619999814778566 m | 8-DIP | Transistor Driver | Step-Up, Step-Up/Step-Down | 0.9300000071525574 ul | 1 ul | Isolation Capable, Positive | 1 ul | 1000000 Hz | 8.199999809265137 V | 15 V | Through Hole | 0.007619999814778566 m | ||
Texas Instruments UCC25705DGKBoost, Flyback, Forward Converter Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-VSSOP | Boost, Flyback, Forward Converter | 85 °C | -40 °C | 0.0029972000047564507 m | 8-MSOP, 8-TSSOP | Transistor Driver | Step-Up, Step-Up/Step-Down | 0.9300000071525574 ul | 1 ul | Isolation Capable, Positive | 1 ul | 1000000 Hz | 8.199999809265137 V | 15 V | Surface Mount | 0.003000000026077032 m | |||
Texas Instruments UCC25705PBoost, Flyback, Forward Converter Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-PDIP | Boost, Flyback, Forward Converter | 8-PDIP | 85 °C | -40 °C | 0.007619999814778566 m | 8-DIP | Transistor Driver | Step-Up, Step-Up/Step-Down | 0.9300000071525574 ul | 1 ul | Isolation Capable, Positive | 1 ul | 1000000 Hz | 8.199999809265137 V | 15 V | Through Hole | 0.007619999814778566 m |
Key Features
• Greater Than 4-MHz OperationIntegrated Oscillator / Voltage Feed Forward Compensation>4:1 Input Voltage Range25-ns Current Limit DelayProgrammable Maximum Duty Cycle ClampOptocoupler Interface50-µA Start-Up Current4.2-mA Operating Current @ 1 MHzSmallest Footprint of the 8-pin MSOP Package MinimizesBoard Area and HeightGreater Than 4-MHz OperationIntegrated Oscillator / Voltage Feed Forward Compensation>4:1 Input Voltage Range25-ns Current Limit DelayProgrammable Maximum Duty Cycle ClampOptocoupler Interface50-µA Start-Up Current4.2-mA Operating Current @ 1 MHzSmallest Footprint of the 8-pin MSOP Package MinimizesBoard Area and Height
Description
AI
The UCC35705 and UCC35706 devices are 8-pin voltage mode primary side controllers with fast over-current protection. These devices are used as core high-speed building blocks in high performance isolated and non-isolated power converters.
UCC35705/UCC35706 devices feature a high speed oscillator with integrated feed-forward compensation for improved converter performance. A typical current sense to output delay time of 25 ns provides fast response to overload conditions. The IC also provides an accurate programmable maximum duty cycle clamp for increased protection which can also be disabled for the oscillator to run at maximum possible duty cycle.
Two UVLO options are offered. The UCC35705 with lower turn-on voltage is intended for dc-to-dc converters while the higher turn-on voltage and the wider UVLO range of the UCC35706 is better suited for offline applications.
The UCC35705/UCC35706 family is offered in 8-pin MSOP (DGK), SOIC (D) and PDIP (P) packages.
The UCC35705 and UCC35706 devices are 8-pin voltage mode primary side controllers with fast over-current protection. These devices are used as core high-speed building blocks in high performance isolated and non-isolated power converters.
UCC35705/UCC35706 devices feature a high speed oscillator with integrated feed-forward compensation for improved converter performance. A typical current sense to output delay time of 25 ns provides fast response to overload conditions. The IC also provides an accurate programmable maximum duty cycle clamp for increased protection which can also be disabled for the oscillator to run at maximum possible duty cycle.
Two UVLO options are offered. The UCC35705 with lower turn-on voltage is intended for dc-to-dc converters while the higher turn-on voltage and the wider UVLO range of the UCC35706 is better suited for offline applications.
The UCC35705/UCC35706 family is offered in 8-pin MSOP (DGK), SOIC (D) and PDIP (P) packages.