Datasheet > UCC25706-Q1

UCC25706-Q1

更新时间： 2024-12-01 12:47:15

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
18页	589K
描述
HIGH-SPEED VOLTAGE MODE PULSE WIDTH MODULATOR

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数据手册

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UCC25706-Q1 数据手册

UCC25705-Q1, UCC25706-Q1

www.ti.com

SLUSAI1 –MAY 2011

HIGH-SPEED VOLTAGE MODE PULSE WIDTH MODULATOR

Check for Samples: UCC25705-Q1, UCC25706-Q1

FEATURES

•

Smallest Footprint of the 8-pin MSOP

Package Minimizes Board Area and Height

•

Qualified for Automotive Applications

Greater Than 4-MHz Operation

D PACKAGE

(TOP VIEW)

Integrated Oscillator / Voltage Feed Forward

Compensation

ILIM

VDD

OUT

GND

•

>4:1 Input Voltage Range

25-ns Current Limit Delay

VFF

Programmable Maximum Duty Cycle Clamp

Optocoupler Interface

DISCH

50-µA Start-Up Current

4.2-mA Operating Current at 1 MHz

Latch-Up Exceeds 100mA per JESD78 Class I

DESCRIPTION

The UCC25705-Q1 and UCC25706-Q1 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.

UCC25705-Q1/UCC25706-Q1 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 UCC25705-Q1 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 UCC25706-Q1 is better suited for offline

applications.

The UCC2570x-Q1 family is offered in an 8-pin SOIC (D) package.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...18

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