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UCC35705 Series

15V voltage mode 4MHz PWM controller with 8.8V/8.0V UVLO , 0C to 70C

Manufacturer: Texas Instruments

Catalog(2 parts)

PartFrequency - Switching▲▼Mounting TypePackage / CasePackage / Case▲▼Package / Case▲▼Supplier Device PackageVoltage - Supply (Vcc/Vdd)▲▼Voltage - Supply (Vcc/Vdd)▲▼Number of Outputs▲▼Output ConfigurationOutput Phases▲▼FunctionDuty Cycle (Max)▲▼Operating Temperature▲▼Operating Temperature▲▼TopologySynchronous Rectifier▲▼Clock Sync▲▼Output Type
Texas Instruments
UCC35705P
Boost, Flyback, Forward Converter Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-PDIP
1000000 Hz
Through Hole
8-DIP
0.007619999814778566 m
0.007619999814778566 m
8-PDIP
8.199999809265137 V
15 V
1 ul
Isolation Capable, Positive
1 ul
Step-Up, Step-Up/Step-Down
0.9300000071525574 ul
70 °C
0 °C
Boost, Flyback, Forward Converter
Transistor Driver
Texas Instruments
UCC35705DGK
Boost, Flyback, Forward Converter Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-VSSOP
1000000 Hz
Surface Mount
8-MSOP, 8-TSSOP
0.0029972000047564507 m
0.003000000026077032 m
8.199999809265137 V
15 V
1 ul
Isolation Capable, Positive
1 ul
Step-Up, Step-Up/Step-Down
0.9300000071525574 ul
70 °C
0 °C
Boost, Flyback, Forward Converter
Transistor Driver

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.