Integrated Circuits (ICs)

UCC3809DTR-1

Active

ECONOMY PRIMARY SIDE CONTROLLER WITH 10V/8V UVLO, 0C TO 70C

Deep-Dive with AI

Search across all available documentation for this part.

DocumentsProgramming the UCC3809 for 90% Maximum Duty Cycle Clamp 10-Watt Flyback Converter Utilizing the UCC3809 (Rev. B)+7

Integrated Circuits (ICs)

UCC3809DTR-1

Active

Texas Instruments

ECONOMY PRIMARY SIDE CONTROLLER WITH 10V/8V UVLO, 0C TO 70C

Deep-Dive with AI

DocumentsProgramming the UCC3809 for 90% Maximum Duty Cycle Clamp 10-Watt Flyback Converter Utilizing the UCC3809 (Rev. B)+7

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UCC3809DTR-1

Control Features	Soft Start, Frequency Control
Duty Cycle	70 %
Frequency - Switching	1 MHz
Internal Switch(s)	False
Mounting Type	Surface Mount
Operating Temperature [Max]	150 °C
Operating Temperature [Min]	-55 °C
Output Isolation	Isolated
Package / Case	0.154 in
Package / Case	8-SOIC
Package / Case	3.9 mm
Supplier Device Package	8-SOIC
Topology	Forward, Buck, Boost, Flyback
Voltage - Start Up	15 V
Voltage - Supply (Vcc/Vdd) [Max]	19 V
Voltage - Supply (Vcc/Vdd) [Min]	8 V

UCC3809 Series

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

Part	Package / Case	Package / Case	Mounting Type	Control Features	Duty Cycle	Voltage - Start Up	Operating Temperature [Max]	Operating Temperature [Min]	Topology	Supplier Device Package	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Output Isolation	Frequency - Switching	Package / Case	Package / Case	Board Type	Supplied Contents	Outputs and Type	Outputs and Type	Voltage - Input [Min]	Voltage - Input [Max]	Main Purpose	Voltage - Output	Regulator Topology	Current - Output	Contents	Utilized IC / Part
Texas Instruments UCC3809PTR-2	8-MSOP 8-TSSOP	0.118 in 3 mm Width	Surface Mount	Frequency Control Soft Start	70 %	15 V	150 °C	-55 °C	Boost Buck Flyback Forward	8-VSSOP	8 V	19 V	Isolated	1 MHz
Texas Instruments UCC3809P-1	8-MSOP 8-TSSOP	0.118 in 3 mm Width	Surface Mount	Frequency Control Soft Start	70 %	15 V	150 °C	-55 °C	Boost Buck Flyback Forward	8-VSSOP	8 V	19 V	Isolated	1 MHz
Texas Instruments UCC3809PW-2	8-TSSOP		Surface Mount	Frequency Control Soft Start	70 %	15 V	150 °C	-55 °C	Boost Buck Flyback Forward	8-TSSOP	8 V	19 V	Isolated	1 MHz	0.173 in	4.4 mm
Texas Instruments UCC3809P-2	8-MSOP 8-TSSOP	0.118 in 3 mm Width	Surface Mount	Frequency Control Soft Start	70 %	15 V	150 °C	-55 °C	Boost Buck Flyback Forward	8-VSSOP	8 V	19 V	Isolated	1 MHz
Texas Instruments UCC3809DTR-1	8-SOIC		Surface Mount	Frequency Control Soft Start	70 %	15 V	150 °C	-55 °C	Boost Buck Flyback Forward	8-SOIC	8 V	19 V	Isolated	1 MHz	0.154 in	3.9 mm
Texas Instruments UCC3809D-1
Texas Instruments UCC3809EVM														380 kHz			Fully Populated	Board(s)	1	1 Non-Isolated Output Non-Isolated	32 V	75 V	DC/DC Step Down	3.3 V	Buck	3.3 A	Board(s)	UCC3809
Texas Instruments UCC3809PTR-2G4	8-MSOP 8-TSSOP	0.118 in 3 mm Width	Surface Mount	Frequency Control Soft Start	70 %	15 V	150 °C	-55 °C	Boost Buck Flyback Forward	8-VSSOP	8 V	19 V	Isolated	1 MHz
Texas Instruments UCC3809PWTR-1	8-TSSOP		Surface Mount	Frequency Control Soft Start	70 %	15 V	150 °C	-55 °C	Boost Buck Flyback Forward	8-TSSOP	8 V	19 V	Isolated	1 MHz	0.173 in	4.4 mm
Texas Instruments UCC3809D-1	8-SOIC		Surface Mount	Frequency Control Soft Start	70 %	15 V	150 °C	-55 °C	Boost Buck Flyback Forward	8-SOIC	8 V	19 V	Isolated	1 MHz	0.154 in	3.9 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 2.66
		10	$ 2.39
		25	$ 2.25
		100	$ 1.92
		250	$ 1.80
		500	$ 1.58
		1000	$ 1.31
	Digi-Reel®	1	$ 2.66
		10	$ 2.39
		25	$ 2.25
		100	$ 1.92
		250	$ 1.80
		500	$ 1.58
		1000	$ 1.31
	N/A	379	$ 3.05
	Tape & Reel (TR)	2500	$ 1.12
Texas Instruments	LARGE T&R	1	$ 2.08
		100	$ 1.82
		250	$ 1.27
		1000	$ 1.03

Description

General part information

UCC3809 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.

Documents

Technical documentation and resources

UCC3809DTR-1

Deep-Dive with AI

UCC3809DTR-1

Deep-Dive with AI

Technical Specifications

UCC3809 Series

Pricing

Description

UCC3809 Series

Documents

Programming the UCC3809 for 90% Maximum Duty Cycle Clamp

10-Watt Flyback Converter Utilizing the UCC3809 (Rev. B)

U-168 Implementing a Practical Off-line Lithium-Ion Charger Using the UCC3809

U-165 Reference Design: Isolated 50 Watt Flyback Converter Using

Power Management Guide 2018 (Rev. R)

DN-89 Comparing the UC3842, UCC3802, and UCC3809 Primary Side PWM Controllers

U-165 Design Rvw: Isolated 50 W Flyback Converter Using UCC3809 and UC3965

Economy Primary Side Controller datasheet (Rev. B)

DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode

UCC3809 Series