Datasheet > LR5920

LR5920

更新时间： 2024-10-29 12:26:39

品牌	Logo	应用领域
乐山 - LRC		开关控制器
页数	文件大小	规格书
12页	638K
描述
High Performance Current Mode PWM Switching Power Supply Controller

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LR5920 数据手册

LR5920

High Performance Current Mode PWM Switching Power Supply Controller

FEATURES

DESCRIPTION

The LR5920 is a current mode PWM switching power supply

controller that specifically designed for AC/DC converter with high

performance versus cost ratio. It provides continuous output power up to

12W in the broad voltage range of 85V – 265V.Its optimized and highly

reasonable circuit design has made it possible to minimize the total cost

Built-in 750V high voltage power switching tube with minimal

external parts count

Latched PWM and pulse-by-pulse current limiting inspection

Reduced frequency at low output with standby po wer consumption

below 0.25W

of the product. This power supply controller could be used in typical

flyback circuit topology to constitute simple AC/DC converter. The

internal initiating circuit of 5920 has been designed with a unique means

Built-in slope and feedback compensation function

Separate upper limit current inspection controller to handle timely

the over-current and overload of the controller

of current sink to complete the startup using the amplifying function of the

power switching tube. This will significantly reduce the power

Turn off periodic bias output of the emitter to improve the voltage

resistance of the power tube

consumption of the start-up resistor; and when the output power

becomes smaller, 5920 will automatically lower its operating frequency to

enable very low standby power consumption.

Built-in thermal protective circuit

Complete start-up using amplification of the switching power tube to

reduce the power consumption of the start-up resistor more than ten

When the power tube stops, the internal circuit will turn the power

tube reverse bias to greatly raise the voltage resistant capacity of OC pin.

times

Automatic VCC over-voltage limit

This will ensure the safety of the power tube. The internal design of the

5920 is also provided with o ver-load and saturation preventive function

capable of preventing disorders such as overload, transformer saturation

Broad voltage output power up to 12W and narrow voltage output

power up to 18W

Applications

and output short-circuit, so as to increase the reliability of the power

supply. A voltage reference of 2.5V is also integrated in the 5920 to

Power Adaptors(traveling chargers ,stand-alone power set)

provide accurate power supply to the clock circuit, and the clock

frequency may be set by external timing capacitance. Presently, standard

DIP8 package and environmental friendly lead-free package in

Internal power supply for Energy-Saving Appliances (such as

electromagnetic oven, microwave oven and etc.)

compliance with European standard can be supplied.

12 3 4 5 6 7...12

中文翻译

下载PDF

与LR5920相关器件

型号	品牌	获取价格	描述	数据表
LR5966	UTC	获取价格	5A LOW DROPOUT LINEAR REGULATOR
LR5966G-33-TN5-R	UTC	获取价格	Fixed Positive LDO Regulator
LR5966G-33-TN5-T	UTC	获取价格	Fixed Positive LDO Regulator
LR5966G-XX-TN5-R	UTC	获取价格	5A LOW DROPOUT LINEAR REGULATOR
LR5966G-XX-TN5-T	UTC	获取价格	5A LOW DROPOUT LINEAR REGULATOR
LR5966L-33-TN5-R	UTC	获取价格	Fixed Positive LDO Regulator
LR5966L-33-TN5-T	UTC	获取价格	Fixed Positive LDO Regulator
LR5XXYY	UTC	获取价格	150mA low-dropout regulator, ultralow-po...
LR6	CREE	获取价格	LED Downlight
LR600	LITTELFUSE	获取价格	LLNRK/LLSRK Series POWR-PRO Class RK1

与LR5920相关文章

三星深化印度制造布局，供应链本地化进程加速
2024-10-29

15
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

18
纳微科技震撼发布GaNSlim革新氮化镓功率芯片
2024-10-18

43
意法半导体发布第四代SiC技术，助力电动汽车电驱
2024-10-15

50

产品中心

服务支持

精选活动

关于我们

帮助中心

LR5920

LR5920 数据手册

与LR5920相关器件

与LR5920相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LR5920

LR5920 数据手册

与LR5920相关器件

与LR5920相关文章

您还可以找

您在本页遇到什么问题？