Datasheet > UC2965D

UC2965D

更新时间： 2024-09-15 01:20:11

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
6页	75K
描述
Precision Reference with Low Offset Error Amplifier

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中文翻译

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UC2965D 数据手册

application

INFO

UC1965

UC2965

UC3965

available

Precision Reference with Low Offset Error Amplifier

FEATURES

DESCRIPTION

• Accessible 2.5V Precision Reference

The UC3965 is suitable for applications needing greater precision and

more functionality than the TL431 type shunt regulators. The wide range

VCC input capability enables the device to be biased from the secondary

side output voltage rail, resulting in closed loop soft start.

• 0.4% Initial Reference Accuracy

• 1% Reference Accuracy over Line,

Load, and Full Temperature Range

The UC3965 includes an accessible 2.5V precision reference which offers

0.4% initial and 1% reference accuracy over line, load, and full tempera-

ture range with a low offset error amplifier, a 2X inverting amplifier/buffer,

and an undervoltage lockout circuit. The IC is ideally suited for applica-

tions where high precision PWM power supply regulation is required.

Typically, the error amplifier is configured to compare a fraction of the to

be regulated power supply voltage to the on-chip 2.5V reference. The 2X

amplifier/buffer output is then used to drive a PWM controller or regulator.

The UC3965 is also capable of driving an optocoupler diode for isolated

applications.

• Low 1mV Offset Error Amplifier

• Supports Closed Loop Soft Start

• 2X Inverting Amplifier / Buffer Output

• 4.1V Undervoltage Lockout

• ICC 2mA at 5V

• 8-Pin SOIC or DIL Package

BLOCK DIAGRAM

OFFSET

VCC

COMP

VFB

VREF

2.5V

UVLO

–

VCC

VOUT

GND

VREF

–

15k

7.5k

UDG-98055

SLUS300A - APRIL 1999

12 3 4 5 6

中文翻译

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