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UCC3809 Series

Economy primary side controller with 10V/8V UVLO, 0C to 70C

Manufacturer: Texas Instruments

Catalog(9 parts)

PartMounting TypeVoltage - Start UpInternal Switch(s)TopologyOutput IsolationDuty CycleControl FeaturesFrequency - SwitchingPackage / CasePackage / CasePackage / CaseOperating TemperatureOperating TemperatureVoltage - Supply (Vcc/Vdd)Voltage - Supply (Vcc/Vdd)Supplier Device PackageUtilized IC / PartSupplied ContentsOutputs and TypeOutputs and TypeBoard TypeVoltage - InputVoltage - InputMain PurposeVoltage - OutputContentsCurrent - Output
Texas Instruments
UCC3809PTR-2
Converter 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
Texas Instruments
UCC3809P-1
Converter 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
Texas Instruments
UCC3809P-2
Converter 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
Texas Instruments
UCC3809DTR-1
Converter Offline Boost, Buck, Flyback, Forward Topology 1MHz 8-SOIC
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
Texas Instruments
UCC3809EVM
UCC3809 - DC/DC, Step Down 1, Non-Isolated Outputs Evaluation Board
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-2G4
Converter 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
Texas Instruments
UCC3809PWTR-1
Converter Offline Boost, Buck, Flyback, Forward Topology 1MHz 8-TSSOP
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
Texas Instruments
UCC3809D-1
Converter Offline Boost, Buck, Flyback, Forward Topology 1MHz 8-SOIC
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
Texas Instruments
UCC3809PW-1
Converter Offline Boost, Buck, Flyback, Forward Topology 1MHz 8-TSSOP
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.