UCC2891DG4

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Texas Instruments

IC REG CTRLR MULT TOP 16SOIC

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UCC2891DG4

Unknown

Texas Instruments

IC REG CTRLR MULT TOP 16SOIC

Deep-Dive with AI

DocumentsDatasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UCC2891DG4

Clock Sync	True
Control Features	Ramp, Soft Start, On Time Control, Enable, Current Limit
Duty Cycle (Max) [Max]	70 %
Frequency - Switching	250 kHz
Function	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	16-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	16-SOIC
Synchronous Rectifier	False
Topology	Forward Converter, Flyback
Voltage - Supply (Vcc/Vdd) [Max]	16 V
Voltage - Supply (Vcc/Vdd) [Min]	8.5 V

UCC2891 Series

110-V active clamp current mode PWM controller with P-channel clamp FET and 0.75V CS threshold

Part	Topology	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Mounting Type	Output Configuration	Duty Cycle (Max) [Max]	Supplier Device Package	Function	Output Type	Control Features	Operating Temperature [Max]	Operating Temperature [Min]	Output Phases	Number of Outputs	Frequency - Switching	Package / Case	Package / Case [x]	Package / Case [y]	Voltage - Output	Current - Output	Main Purpose	Supplied Contents	Voltage - Input [Max]	Voltage - Input [Min]	Utilized IC / Part	Outputs and Type	Outputs and Type	Board Type	Regulator Topology
Texas Instruments UCC2891DG4	Flyback Forward Converter	8.5 V	16 V	Surface Mount	Isolation Capable Positive	70 %	16-SOIC	Step-Up/Step-Down	Transistor Driver	Current Limit Enable On Time Control Ramp Soft Start	85 °C	-40 °C	1	1	250 kHz	16-SOIC	0.154 in	3.9 mm
Texas Instruments UCC2891PWR	Flyback Forward Converter	8.5 V	16 V	Surface Mount	Isolation Capable Positive	70 %	16-TSSOP	Step-Up/Step-Down	Transistor Driver	Current Limit Enable On Time Control Ramp Soft Start	85 °C	-40 °C	1	1	250 kHz	16-TSSOP	0.173 in	4.4 mm
Texas Instruments UCC2891DR	Flyback Forward Converter	8.5 V	16 V	Surface Mount	Isolation Capable Positive	70 %	16-SOIC	Step-Up/Step-Down	Transistor Driver	Current Limit Enable On Time Control Ramp Soft Start	85 °C	-40 °C	1	1	250 kHz	16-SOIC	0.154 in	3.9 mm
Texas Instruments UCC2891EVM-520															250 kHz				3.3 V	30 A	DC/DC Step Down	Board(s)	75 V	36 V	UCC2891	Non-Isolated	1	Fully Populated	Forward Converter
Texas Instruments UCC2891PW	Flyback Forward Converter	8.5 V	16 V	Surface Mount	Isolation Capable Positive	70 %	16-TSSOP	Step-Up/Step-Down	Transistor Driver	Current Limit Enable On Time Control Ramp Soft Start	85 °C	-40 °C	1	1	250 kHz	16-TSSOP	0.173 in	4.4 mm
Texas Instruments UCC2891D	Flyback Forward Converter	8.5 V	16 V	Surface Mount	Isolation Capable Positive	70 %	16-SOIC	Step-Up/Step-Down	Transistor Driver	Current Limit Enable On Time Control Ramp Soft Start	85 °C	-40 °C	1	1	250 kHz	16-SOIC	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	Tube	240	$ 2.28

Description

General part information

UCC2891 Series

The UCC2891/2/3/4 family of PWM controllers is designed to simplify implementation of the various active clamp/reset switching power topologies.

The UCC289x is a peak current-mode, fixedfrequency, high-performance pulse width modulator. It includes the logic and the drive capability for the auxiliary switch with a simple method of programming the critical delays for proper active clamp operation.

The UCC2891/3 includes a 110-V start-up regulator for initial start-up and to provide keep-alive power during stand-by.

Documents

Technical documentation and resources