Datasheet > LT3573_09

LT3573_09

更新时间： 2024-11-13 05:43:31

品牌	Logo	应用领域
凌特 - Linear		转换器光电
页数	文件大小	规格书
26页	1060K
描述
Isolated Flyback Converter without an Opto-Coupler

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中文翻译

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LT3573_09 数据手册

LT3573

Isolated Flyback Converter

without an Opto-Coupler

Features

Description

The LT^®3573 is a monolithic switching regulator speciﬁ‑

cally designed for the isolated ﬂyback topology. No third

winding or optoisolator is required for regulation. The

part senses the isolated output voltage directly from the

primary side ﬂyback waveform. A 1.25A, 60V NPN power

switch is integrated along with all control logic into a

16‑lead MSOP package.

3V to 40V Input Voltage Range

1.25A, 60V Integrated NPN Power Switch

Boundary Mode Operation

No Transformer Third Winding or

Optoisolator Required for Regulation

Improved Primary-Side Winding Feedback

Load Regulation

Set with Two External Resistors

OUT

The LT3573 operates with input supply voltages from

3V to 40V, and can deliver output power up to 7W with

no external power devices.The LT3573 utilizes boundary

mode operation to provide a small magnetic solution with

improved load regulation.

BIAS Pin for Internal Bias Supply and Power

NPN Driver

Programmable Soft‑Start

Programmable Power Switch Current Limit

Thermally Enhanced 16‑Lead MSOP

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Patents pending.

applications

Industrial, Automotive and Medical Isolated

Power Supplies

typical application

5V Isolated Flyback Converter

Load Regulation

12V TO 24V

B340A

3:1

10µF

OUT

24µH

357k

0.22µF

5V, 0.7A

2.6µH

SHDN/UVLO

47µF

–

51.1k

1N4148

80.6k

OUT

= 24V

LT3573

REF

= 12V

6.04k

–1

–2

–3

ILIM

GND TEST BIAS

10k

20k

1nF

400 600 800 1000 1200 1400

(mA)

28.7k

200

OUT

4.7µF

10nF

3573 TA01b

3573 TA01

3573fb

ꢀ

12 3 4 5 6 7...26

中文翻译

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LT3573IMSE-PBF	Linear	获取价格	Isolated Flyback Converter Without an Opto-Coupler
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