UCC2581DTR

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Texas Instruments

15V, 1A MICROPOWER VOLTAGE MODE PWM CONTROLLER, -40C TO 85C

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Search across all available documentation for this part.

DocumentsMicroPower Voltage Mode PWM datasheet (Rev. B)

UCC2581DTR

Active

Texas Instruments

15V, 1A MICROPOWER VOLTAGE MODE PWM CONTROLLER, -40C TO 85C

Deep-Dive with AI

DocumentsMicroPower Voltage Mode PWM datasheet (Rev. B)

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UCC2581DTR

Clock Sync	True
Control Features	Enable, Soft Start, Frequency Control, Current Limit
Duty Cycle (Max)	84 %
Frequency - Switching [Max]	100 kHz
Function	Step-Up, Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive, Isolation Capable
Output Phases	1
Output Type	Transistor Driver
Package / Case	14-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Synchronous Rectifier	False
Topology	Flyback, Boost, Forward Converter
Voltage - Supply (Vcc/Vdd) [Max]	15 V
Voltage - Supply (Vcc/Vdd) [Min]	6.8 V

UCC2581 Series

15V, 1A Micropower voltage mode PWM controller, -40C to 85C

Part	Mounting Type	Output Type	Function	Number of Outputs	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Frequency - Switching [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Control Features	Duty Cycle (Max)	Package / Case [x]	Package / Case [y]	Package / Case	Output Phases	Topology	Output Configuration
Texas Instruments UCC2581D	Surface Mount	Transistor Driver	Step-Up Step-Up/Step-Down	1	15 V	6.8 V	100 kHz	85 °C	-40 °C	Current Limit Enable Frequency Control Soft Start	84 %	0.154 in	3.9 mm	14-SOIC	1	Boost Flyback Forward Converter	Isolation Capable Positive
Texas Instruments UCC2581DTRG4	Surface Mount	Transistor Driver	Step-Up Step-Up/Step-Down	1	15 V	6.8 V	100 kHz	85 °C	-40 °C	Current Limit Enable Frequency Control Soft Start	84 %	0.154 in	3.9 mm	14-SOIC	1	Boost Flyback Forward Converter	Isolation Capable Positive
Texas Instruments UCC2581DTR	Surface Mount	Transistor Driver	Step-Up Step-Up/Step-Down	1	15 V	6.8 V	100 kHz	85 °C	-40 °C	Current Limit Enable Frequency Control Soft Start	84 %	0.154 in	3.9 mm	14-SOIC	1	Boost Flyback Forward Converter	Isolation Capable Positive

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	$ 4.34
	Digi-Reel®	1	$ 4.34
	Tape & Reel (TR)	2500	$ 2.18
Texas Instruments	LARGE T&R	1	$ 3.77
		100	$ 3.30
		250	$ 2.31
		1000	$ 1.86

Description

General part information

UCC2581 Series

The UCC3581 voltage mode pulse width modulator is designed to control low power isolated DC - DC converters in applications such as Subscriber Line Power (ISDN I.430). Primarily used for single switch forward and flyback converters, the UCC3581 features BiCMOS circuitry for low startup and operating current, while maintaining the ability to drive power MOSFETs at frequencies up to 100kHz. The UCC3581 oscillator allows the flexibility to program both the frequency and the maximum duty cycle with two resistors and a capacitor. A TTL level input is also provided to allow synchronization to an external frequency source.

The UCC3581 includes programmable soft start circuitry, overcurrent detection, a 7.5V linear preregulator to control chip VDD during startup, and an on-board 4.0V logic supply.

The UCC3581 provides functions to maximize light load efficiency that are not normally found in PWM controllers.

Documents

Technical documentation and resources

MicroPower Voltage Mode PWM datasheet (Rev. B)

Data sheet