UCC2809DTR-2

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Texas Instruments

ECONOMY PRIMARY SIDE CONTROLLER WITH 150V/8V UVLO, -40C TO 85C

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UCC2809DTR-2

Active

Texas Instruments

ECONOMY PRIMARY SIDE CONTROLLER WITH 150V/8V UVLO, -40C TO 85C

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Description Specifications Series Pricing CAD Documents

Description

General part information

UCC2809 Series

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.

Technical Specifications

Parameters and characteristics for this part

Specification	UCC2809DTR-2

Control Features	Soft Start, Frequency Control
Duty Cycle	70 %
Frequency - Switching	1 MHz
Internal Switch(s)	No
Mounting Type	Surface Mount
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-55 °C
Output Isolation	Isolated
Package Length	0.154 in
Package Name	8-SOIC
Package Width	3.9 mm
Topology	Forward, Flyback, Boost
Voltage - Start Up	10 V
Voltage - Supply (Vcc/Vdd) Maximum	19 V
Voltage - Supply (Vcc/Vdd) Minimum	8 V

UCC2809 Series

Economy primary side controller with 150V/8V UVLO, -40C to 85C

Part	Frequency - Switching	Voltage - Start Up	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Internal Switch(s)	Output Isolation	Mounting Type	Duty Cycle	Topology	Control Features	Operating Temperature (Min)	Operating Temperature (Max)	Package Name	Package Width	Package Length
Texas Instruments UCC2809PTR-1	1 MHz	10 V	8 V	19 V	No	Isolated	Surface Mount	70 %	Boost Flyback Forward	Frequency Control Soft Start	-55 °C	150 °C	8-TSSOP 8-MSOP 8-VSSOP	3 mm	0.118 in
Texas Instruments UCC2809PTR-1G4	1 MHz	10 V	8 V	19 V	No	Isolated	Surface Mount	70 %	Boost Flyback Forward	Frequency Control Soft Start	-55 °C	150 °C	8-TSSOP 8-MSOP 8-VSSOP	3 mm	0.118 in
Texas Instruments UCC2809PWTR-1G4	1 MHz	10 V	8 V	19 V	No	Isolated	Surface Mount	70 %	Boost Flyback Forward	Frequency Control Soft Start	-55 °C	150 °C	8-TSSOP	4.4 mm	0.173 in
Texas Instruments UCC2809DTR-1	1 MHz	10 V	8 V	19 V	No	Isolated	Surface Mount	70 %	Boost Flyback Forward	Frequency Control Soft Start	-55 °C	150 °C	8-SOIC	3.9 mm	0.154 in
Texas Instruments UCC2809DTR-2	1 MHz	10 V	8 V	19 V	No	Isolated	Surface Mount	70 %	Boost Flyback Forward	Frequency Control Soft Start	-55 °C	150 °C	8-SOIC	3.9 mm	0.154 in
Texas Instruments UCC2809PW-2	1 MHz	10 V	8 V	19 V	No	Isolated	Surface Mount	70 %	Boost Flyback Forward	Frequency Control Soft Start	-55 °C	150 °C	8-TSSOP	4.4 mm	0.173 in
Texas Instruments UCC2809P-1	1 MHz	10 V	8 V	19 V	No	Isolated	Surface Mount	70 %	Boost Flyback Forward	Frequency Control Soft Start	-55 °C	150 °C	8-TSSOP 8-MSOP 8-VSSOP	3 mm	0.118 in
Texas Instruments UCC2809P-2	1 MHz	15 V	8 V	19 V	No	Isolated	Surface Mount	70 %	Boost Flyback Forward	Frequency Control Soft Start	-55 °C	150 °C	8-TSSOP 8-MSOP 8-VSSOP	3 mm	0.118 in
Texas Instruments UCC2809PTR-2	1 MHz	10 V	8 V	19 V	No	Isolated	Surface Mount	70 %	Boost Flyback Forward	Frequency Control Soft Start	-55 °C	150 °C	8-TSSOP 8-MSOP 8-VSSOP	3 mm	0.118 in
Texas Instruments UCC2809DTR-1G4	1 MHz	10 V	8 V	19 V	No	Isolated	Surface Mount	70 %	Boost Flyback Forward	Frequency Control Soft Start	-55 °C	150 °C	8-SOIC	3.9 mm	0.154 in

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

UCC2809DTR-2 | Datasheet

Economy Primary Side Controller datasheet (Rev. B)