Integrated Circuits (ICs)

UCC2894D

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Texas Instruments

16V ACTIVE CLAMP CURRENT MODE PWM CONTROLLER WITH N-CHANNEL CLAMP FET AND LINE OV PROTECTION

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Integrated Circuits (ICs)

UCC2894D

Active

Texas Instruments

16V ACTIVE CLAMP CURRENT MODE PWM CONTROLLER WITH N-CHANNEL CLAMP FET AND LINE OV PROTECTION

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Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UCC2894D

Control Features	Soft Start, Sync
Duty Cycle	70 %
Fault Protection	Current Limiting
Frequency - Switching	1 MHz
Internal Switch(s)	False
Mounting Type	Surface Mount
Operating Temperature [Max]	105 C
Operating Temperature [Min]	-40 C
Output Isolation	Isolated
Package / Case	16-SOIC
Package / Case	0.154 in, 3.9 mm
Supplier Device Package	16-SOIC
Topology	Forward, Flyback
Voltage - Start Up	12.7 V
Voltage - Supply (Vcc/Vdd) [Max]	16 V
Voltage - Supply (Vcc/Vdd) [Min]	8.5 V

UCC2894 Series

Part	Operating Temperature [Max]	Operating Temperature [Min]	Control Features	Topology	Output Isolation	Frequency - Switching	Mounting Type	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Duty Cycle	Package / Case	Package / Case	Voltage - Start Up	Supplier Device Package	Fault Protection	Package / Case [y]	Package / Case [y]
Texas Instruments UCC2894DR	105 C	-40 C	Soft Start Sync	Flyback Forward	Isolated	1 MHz	Surface Mount	8.5 V	16 V	70 %	16-SOIC	0.154 in 3.9 mm	12.7 V	16-SOIC	Current Limiting
Texas Instruments UCC2894DRG4	105 C	-40 C	Soft Start Sync	Flyback Forward	Isolated	1 MHz	Surface Mount	8.5 V	16 V	70 %	16-SOIC	0.154 in 3.9 mm	12.7 V	16-SOIC	Current Limiting
Texas Instruments UCC2894D	105 C	-40 C	Soft Start Sync	Flyback Forward	Isolated	1 MHz	Surface Mount	8.5 V	16 V	70 %	16-SOIC	0.154 in 3.9 mm	12.7 V	16-SOIC	Current Limiting
Texas Instruments UCC2894PWR	105 C	-40 C	Soft Start Sync	Flyback Forward	Isolated	1 MHz	Surface Mount	8.5 V	16 V	70 %	16-TSSOP		12.7 V	16-TSSOP	Current Limiting	4.4 mm	0.173 in
Texas Instruments UCC2894PW	105 C	-40 C	Soft Start Sync	Flyback Forward	Isolated	1 MHz	Surface Mount	8.5 V	16 V	70 %	16-TSSOP		12.7 V	16-TSSOP	Current Limiting	4.4 mm	0.173 in

Pricing

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

Distributor	Package	Quantity	$

Digikey	N/A	3312	$ 3.77
	Tube	1	$ 2.67
		10	$ 2.39
		40	$ 2.26
		120	$ 1.96
		280	$ 1.86
		520	$ 1.77
Texas Instruments	TUBE	1	$ 3.29
		100	$ 2.88
		250	$ 2.02
		1000	$ 1.63

Description

General part information

UCC2894 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