UC3901-W

更新时间： 2024-11-25 13:15:07

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
7页	399K
描述
Isolated Feedback Generator 0-WAFERSALE

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中文翻译

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技术参数
数据手册

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UC3901-W 技术参数

是否无铅：	含铅	生命周期：	Obsolete
包装说明：	WAFER	Reach Compliance Code：	unknown
HTS代码：	8542.39.00.01	风险等级：	5.57
Is Samacsys：	N	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	X-XUUC-N	功能数量：	1
最高工作温度：	70 °C	最低工作温度：
封装主体材料：	UNSPECIFIED	封装代码：	DIE
封装形状：	UNSPECIFIED	封装形式：	UNCASED CHIP
最大供电电压 (Vsup)：	40 V	最小供电电压 (Vsup)：	4.5 V
标称供电电压 (Vsup)：	10 V	表面贴装：	YES
温度等级：	COMMERCIAL	端子形式：	NO LEAD
端子位置：	UPPER	Base Number Matches：	1

UC3901-W 数据手册

UC1901

UC2901

UC3901

Isolated Feedback Generator

FEATURES

DESCRIPTION

• An Amplitude-Modulation System for

Transformer Coupling an Isolated

Feedback Error Signal

The UC1901 family is designed to solve many of the problems associ-

ated with closing a feedback control loop across a voltage isolation

boundary. As a stable and reliable alternative to an optical coupler, these

devices feature an amplitude modulation system which allows a loop er-

ror signal to be coupled with a small RF transformer or capacitor.

• Low-Cost Alternative to Optical

Couplers

The programmable, high-frequency oscillator within the UC1901 series

permits the use of smaller, less expensive transformers which can readily

be built to meet the isolation requirements of today's line-operated power

systems. As an alternative to RF operation, the external clock input to

these devices allows synchronization to a system clock or to the switch-

ing frequency of a SMPS.

• Internal 1% Reference and Error

Amplifier

• Internal Carrier Oscillator Usable to

5MHz

• Modulator Synchronizable to an

External Clock

An additional feature is a status monitoring circuit which provides an active-

low output when the sensed error voltage is within 10% of the reference.

• Loop Status Monitor

The DRIVERA output, DRIVERB output, and STATUS output are disabled

until the input supply has reached a sufficient level to allow proper operation

of the device.

Since these devices can also be used as a DC driver for optical couplers,

the benefits of 4.5 to 40V supply operation, a 1% accurate reference, and a

high gain general purpose amplifier offer advantages even though an AC

system may not be desired.

UC1901 SIMPLIFIED SCHEMATIC

UDG-98080

11/98

12 3 4 5 6 7

中文翻译

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