Datasheet > UC1853DTR

UC1853DTR

更新时间： 2024-02-01 00:39:26

品牌	Logo	应用领域
德州仪器 - TI		光电二极管
页数	文件大小	规格书
6页	204K
描述
IC,POWER FACTOR CONTROLLER,BIPOLAR,SOP,8PIN

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技术参数
数据手册

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UC1853DTR 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
Reach Compliance Code：	not_compliant	风险等级：	5.92
Is Samacsys：	N	JESD-30 代码：	R-PDSO-G8
端子数量：	8	最高工作温度：	125 °C
最低工作温度：	-55 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
认证状态：	Not Qualified	子类别：	Switching Regulator or Controllers
表面贴装：	YES	技术：	BIPOLAR
温度等级：	MILITARY	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
Base Number Matches：	1

UC1853DTR 数据手册

UC1853

UC2853

UC3853

High Power Factor Preregulator

DESCRIPTION

FEATURES

•

Complete 8-pin Power Factor

Solution

The UC3853 provides simple, yet high performance active power factor

correction. Using the same control technique as the UC1854, this 8-pin de-

vice exploits a simplified architecture and an internal oscillator to minimize

external component count. The UC3853 incorporates a precision multi-

plier/squarer/divider circuit, voltage and current loop error amplifiers, and a

precision voltage reference to implement average current mode control

with RMS line voltage compensation. This control technique maintains con-

stant loop gain with changes in input voltage, which minimizes input line

current distortion over the worldwide input voltage range.

•

Reduced External Components

RMS Line Voltage Compensation

Precision Multiplier/Squarer/Divider

Internal 75kHz Synchronizable

Oscillator

The internal 75kHz oscillator includes an external clock input, allowing syn-

chronization to downstream converters. Additionally, the device features an

overvoltage protection comparator, a clamped MOSFET gate driver which

self-biases low during undervoltage lockout, and low startup and supply

•

Average Current Mode PWM

Control

•

Overvoltage Protection Comparator

High Current, Clamped Gate Driver current.

These devices are available in 8-pin plastic and ceramic dual in-line (DIP)

packages, and 8-lead small outline (SOIC) packages. The UC1853 is

specified for operation from –55°C to +125°C, the UC2853 is specified for

operation from –25°C to +85°C, and the UC3853 is specified for operation

from 0°C to +70°C.

BLOCK DIAGRAM

UDG-94120-1

11/97

12 3 4 5 6

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