Specification	UCC25706DGK

Duty Cycle	93 %
Fault Protection	Current Limiting
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-MSOP, 8-TSSOP
Package / Case	3 mm
Package / Case [custom]	0.118 in
Topology	Boost, Flyback, Forward
Voltage - Start Up	12 V
Voltage - Supply (Vcc/Vdd) [Max]	15 V
Voltage - Supply (Vcc/Vdd) [Min]	8 V

UCC25706 Series

15V voltage mode 4MHz PWM controller with 12V/8.0V UVLO , -40C to 85C

Part	Mounting Type	Voltage - Start Up	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Package / Case	Package / Case [y]	Package / Case [x]	Duty Cycle	Output Isolation	Frequency - Switching	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Topology	Internal Switch(s)	Fault Protection	Package / Case [custom]	Package / Case
Texas Instruments UCC25706D	Surface Mount	12 V	-55 °C	150 °C	8-SOIC	8-SOIC	3.9 mm	0.154 in	93 %	Isolated	1 MHz	15 V	8 V	Boost Flyback Forward		Current Limiting
Texas Instruments UCC25706DGK	Surface Mount	12 V	-55 °C	150 °C		8-MSOP 8-TSSOP			93 %	Isolated	1 MHz	15 V	8 V	Boost Flyback Forward		Current Limiting	0.118 in	3 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	480	$ 2.09
Texas Instruments	TUBE	1	$ 2.52
		100	$ 2.21
		250	$ 1.55
		1000	$ 1.25

Description

General part information

UCC25706 Series

The UCC35705 and UCC35706 devices are 8-pin voltage mode primary side controllers with fast over-current protection. These devices are used as core high-speed building blocks in high performance isolated and non-isolated power converters.

UCC35705/UCC35706 devices feature a high speed oscillator with integrated feed-forward compensation for improved converter performance. A typical current sense to output delay time of 25 ns provides fast response to overload conditions. The IC also provides an accurate programmable maximum duty cycle clamp for increased protection which can also be disabled for the oscillator to run at maximum possible duty cycle.

Two UVLO options are offered. The UCC35705 with lower turn-on voltage is intended for dc-to-dc converters while the higher turn-on voltage and the wider UVLO range of the UCC35706 is better suited for offline applications.

Documents

Technical documentation and resources

High Speed Voltage Mode Pulse Width Modulator datasheet (Rev. B)

Data sheet