UCC2581D - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

UCC2581D
Manufacturer

TI
ChipWorker Part#

CW37401396
Category

Voltage Regulator
Package

SOIC-14
Description

Voltage Mode PWM Controller 1A 21kHz 14Pin SOIC Tube
Documentation

Datasheet

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UCC2581D Specifications

Attribute	Attribute Value

Part Number	UCC2581D
Manufacturer	TI
ChipWorker Part#	CW37401396
Category	Voltage Regulator
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	14 Pin
Case/Package	SOIC-14
Frequency	100 kHz
Supply Voltage (DC)	7.30V (min)
Number of Outputs	1 Output
Output Voltage	600 mV
Output Current	1 A
Supply Current	300 µA
Number of Positions	14 Position
Power Dissipation	650 mW
Number of Regulated Outputs	1 Output
Rise Time	20 ns
Switching Frequency	21 kHz
Topology	Boost, Flyback, Forward
Duty Cycle	87 %
Maximum Duty Cycle	87 %
Fall Time	20 ns
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	650 mW
Supply Voltage	7.4V ~ 10V
Supply Voltage (Max)	15 V
Supply Voltage (Min)	7.3 V
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Size-Length	8.65 mm
Size-Height	1.58 mm
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15

Product Description

The UCC2581D is a voltage mode Pulse Width Modulation (PWM) designed to control low power isolated DC to DC converters in applications such as subscriber line power (ISDN I.430). Primarily used for single switch forward and flyback converters, it features BiCMOS circuitry for low startup and operating current, while maintaining the ability to drive power MOSFETs at frequencies up to 100kHz. The 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. It includes programmable soft start circuitry, overcurrent detection, a 7.5V linear pre-regulator to control chip VDD during startup and an on-board 4V logic supply. It provides functions to maximize light load efficiency that are not normally found in PWM controllers.
Low 85µA Startup current
Low 300µA Operating current
Automatically disabled startup preregulator
Programmable minimum duty cycle with cycle skipping
Programmable maximum duty cycle
Output current 1A Peak source and sink
Programmable soft start
Programmable oscillator frequency
External oscillator synchronization capability
Green product and no Sb/Br

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