UCC3809 Series
Economy primary side controller with 10V/8V UVLO, 0C to 70C
Manufacturer: Texas Instruments
Catalog(9 parts)
Part | Mounting Type | Voltage - Start Up▲▼ | Internal Switch(s)▲▼ | Topology | Output Isolation | Duty Cycle▲▼ | Control Features | Frequency - Switching▲▼ | Package / Case | Package / Case▲▼ | Package / Case▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Supplier Device Package | Utilized IC / Part | Supplied Contents | Outputs and Type | Outputs and Type▲▼ | Board Type | Voltage - Input▲▼ | Voltage - Input▲▼ | Main Purpose | Voltage - Output▲▼ | Contents | Current - Output▲▼ |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Surface Mount | 15 V | Boost, Buck, Flyback, Forward | Isolated | 0.699999988079071 ul | Frequency Control, Soft Start | 1000000 Hz | 8-MSOP, 8-TSSOP | 0.0029972000047564507 m | 0.003000000026077032 m | 150 °C | -55 °C | 19 V | 8 V | ||||||||||||||
Surface Mount | 15 V | Boost, Buck, Flyback, Forward | Isolated | 0.699999988079071 ul | Frequency Control, Soft Start | 1000000 Hz | 8-MSOP, 8-TSSOP | 0.0029972000047564507 m | 0.003000000026077032 m | 150 °C | -55 °C | 19 V | 8 V | ||||||||||||||
Surface Mount | 15 V | Boost, Buck, Flyback, Forward | Isolated | 0.699999988079071 ul | Frequency Control, Soft Start | 1000000 Hz | 8-MSOP, 8-TSSOP | 0.0029972000047564507 m | 0.003000000026077032 m | 150 °C | -55 °C | 19 V | 8 V | ||||||||||||||
Surface Mount | 15 V | Boost, Buck, Flyback, Forward | Isolated | 0.699999988079071 ul | Frequency Control, Soft Start | 1000000 Hz | 8-SOIC | 0.003899999894201755 m | 150 °C | -55 °C | 19 V | 8 V | 8-SOIC | ||||||||||||||
380000 Hz | UCC3809 | Board(s) | 1 Non-Isolated Output, Non-Isolated | 1 ul | Fully Populated | 32 V | 75 V | DC/DC, Step Down | 3.299999952316284 V | Board(s) | 3.299999952316284 A | ||||||||||||||||
Texas Instruments UCC3809PTR-2G4Converter Offline Boost, Buck, Flyback, Forward Topology 1MHz 8-VSSOP | Surface Mount | 15 V | Boost, Buck, Flyback, Forward | Isolated | 0.699999988079071 ul | Frequency Control, Soft Start | 1000000 Hz | 8-MSOP, 8-TSSOP | 0.0029972000047564507 m | 0.003000000026077032 m | 150 °C | -55 °C | 19 V | 8 V | |||||||||||||
Surface Mount | 15 V | Boost, Buck, Flyback, Forward | Isolated | 0.699999988079071 ul | Frequency Control, Soft Start | 1000000 Hz | 8-TSSOP (0.173", 4.40mm Width) | 150 °C | -55 °C | 19 V | 8 V | 8-TSSOP | |||||||||||||||
Surface Mount | 15 V | Boost, Buck, Flyback, Forward | Isolated | 0.699999988079071 ul | Frequency Control, Soft Start | 1000000 Hz | 8-SOIC | 0.003899999894201755 m | 150 °C | -55 °C | 19 V | 8 V | 8-SOIC | ||||||||||||||
Surface Mount | 15 V | Boost, Buck, Flyback, Forward | Isolated | 0.699999988079071 ul | Frequency Control, Soft Start | 1000000 Hz | 8-TSSOP (0.173", 4.40mm Width) | 150 °C | -55 °C | 19 V | 8 V | 8-TSSOP |
Key Features
• User Programmable Soft Start With Active Low ShutdownUser Programmable Maximum Duty CycleAccessible 5V ReferenceUndervoltage LockoutOperation to 1MHz0.4A Source/0.8A Sink FET DriverLow 100µA Startup CurrentUser Programmable Soft Start With Active Low ShutdownUser Programmable Maximum Duty CycleAccessible 5V ReferenceUndervoltage LockoutOperation to 1MHz0.4A Source/0.8A Sink FET DriverLow 100µA Startup Current
Description
AI
The UCC3809 family of BCDMOS economy low power integrated circuits contains all the control and drive circuitry required for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count. Internally implemented circuits include undervoltage lockout featuring startup current less than 100µA, a user accessible voltage reference, logic to ensure latched operation, a PWM comparator, and a totem pole output stage to sink or source peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.
Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3809 family also features full cycle soft start.
The family has UVLO thresholds and hysteresis levels for off-line and DC-to-DC systems as shown in the table to the left.
The UCC3809 and the UCC2809 are offered in the 8 pin SOIC (D), PDIP (N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and MSOP packages make the device ideal for applications where board space and height are at a premium.
The UCC3809 family of BCDMOS economy low power integrated circuits contains all the control and drive circuitry required for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count. Internally implemented circuits include undervoltage lockout featuring startup current less than 100µA, a user accessible voltage reference, logic to ensure latched operation, a PWM comparator, and a totem pole output stage to sink or source peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.
Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3809 family also features full cycle soft start.
The family has UVLO thresholds and hysteresis levels for off-line and DC-to-DC systems as shown in the table to the left.
The UCC3809 and the UCC2809 are offered in the 8 pin SOIC (D), PDIP (N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and MSOP packages make the device ideal for applications where board space and height are at a premium.