UCC2809D-1

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Texas Instruments

ECONOMY PRIMARY SIDE CONTROLLER WITH 10V/8V UVLO, -40C TO 85C

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DocumentsEconomy Primary Side Controller datasheet (Rev. B)Datasheet

UCC2809D-1

Active

Texas Instruments

ECONOMY PRIMARY SIDE CONTROLLER WITH 10V/8V UVLO, -40C TO 85C

Deep-Dive with AI

DocumentsEconomy Primary Side Controller datasheet (Rev. B)Datasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UCC2809D-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	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	8-SOIC
Topology	Boost, Flyback, Forward
Voltage - Start Up	10 V
Voltage - Supply (Vcc/Vdd) [Max]	19 V
Voltage - Supply (Vcc/Vdd) [Min]	8 V

UCC2809-2 Series

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

Part	Voltage - Start Up	Control Features	Topology	Frequency - Switching	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Package / Case	Package / Case [custom]	Package / Case	Output Isolation	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Duty Cycle	Package / Case [custom]	Supplier Device Package	Package / Case [y]	Package / Case [x]
Texas Instruments UCC2809PTR-1G4	10 V	Frequency Control Soft Start	Boost Flyback Forward	1 MHz	19 V	8 V	8-MSOP 8-TSSOP	0.118 in	3 mm	Isolated	-55 °C	150 °C	Surface Mount	70 %
Texas Instruments UCC2809PWTR-1G4	10 V	Frequency Control Soft Start	Boost Flyback Forward	1 MHz	19 V	8 V	8-TSSOP	0.173 "		Isolated	-55 °C	150 °C	Surface Mount	70 %	4.4 mm	8-TSSOP
Texas Instruments UCC2809DTR-2	10 V	Frequency Control Soft Start	Boost Flyback Forward	1 MHz	19 V	8 V	8-SOIC			Isolated	-55 °C	150 °C	Surface Mount	70 %		8-SOIC	3.9 mm	0.154 in
Texas Instruments UCC2809PW-2	10 V	Frequency Control Soft Start	Boost Flyback Forward	1 MHz	19 V	8 V	8-TSSOP	0.173 "		Isolated	-55 °C	150 °C	Surface Mount	70 %	4.4 mm	8-TSSOP
Texas Instruments UCC2809P-2	15 V	Frequency Control Soft Start	Boost Flyback Forward	1 MHz	19 V	8 V	8-MSOP 8-TSSOP	0.118 in	3 mm	Isolated	-55 °C	150 °C	Surface Mount	70 %
Texas Instruments UCC2809PTR-2	10 V	Frequency Control Soft Start	Boost Flyback Forward	1 MHz	19 V	8 V	8-MSOP 8-TSSOP	0.118 in	3 mm	Isolated	-55 °C	150 °C	Surface Mount	70 %
Texas Instruments UCC2809DTR-1G4	10 V	Frequency Control Soft Start	Boost Flyback Forward	1 MHz	19 V	8 V	8-SOIC			Isolated	-55 °C	150 °C	Surface Mount	70 %		8-SOIC	3.9 mm	0.154 in
Texas Instruments UCC2809D-1	10 V	Frequency Control Soft Start	Boost Flyback Forward	1 MHz	19 V	8 V	8-SOIC			Isolated	-55 °C	150 °C	Surface Mount	70 %		8-SOIC	3.9 mm	0.154 in
Texas Instruments UCC2809PW-1	10 V	Frequency Control Soft Start	Boost Flyback Forward	1 MHz	19 V	8 V	8-TSSOP	0.173 "		Isolated	-55 °C	150 °C	Surface Mount	70 %	4.4 mm	8-TSSOP

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 3.59
		10	$ 3.22
		75	$ 3.05
		150	$ 2.64
		300	$ 2.50
		525	$ 2.25
		1050	$ 1.89
		2550	$ 1.80
		5025	$ 1.73
Texas Instruments	TUBE	1	$ 3.11
		100	$ 2.73
		250	$ 1.91
		1000	$ 1.54

Description

General part information

UCC2809-2 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.