Datasheet > LR745N3-GP013

LR745N3-GP013

更新时间： 2024-10-29 19:14:47

品牌	Logo	应用领域
超科 - SUPERTEX		/
页数	文件大小	规格书
7页	688K
描述
Analog Circuit

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LR745N3-GP013 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.59	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
Base Number Matches：	1

LR745N3-GP013 数据手册

Supertex inc.

LR745

High Input Voltage

SMPS Start-up

Features

General Description

► Accepts inputs from 35 to 450V

The Supertex LR745 is a high input voltage SMPS start-

up circuit. The LR745 is ideally suited for use with industry

standard low voltage PWM ICs having start thresholds of

13.9 to 18.0V. It allows the PWM ICs to be operated from

rectiﬁed 120 or 240VAC lines, and eliminates the use of

power resistors often used for this purpose.

► Output current limiting

► For PWM ICs with start-up threshold voltage

of 13.9 - 18.0V

► Very low power consumption after start-up

Applications

► Notebook and laptop computers

► Telecommunication power supplies

► Battery chargers

The internal circuitry of the LR745 allows the PWM ICs

to operate at a V_CCvoltage below their start threshold

voltage after start-up. The auxiliary voltage can be less

than the start threshold voltage, which allows for improved

efﬁciency.Current from the high voltage line is drawn only

during the start-up period. After start-up, the internal high

voltage line is disconnected from the IC, thereby reducing

the continuous power dissipation to a minimum.

► Motor controllers

Ordering Information

Pin Conﬁguration

Part Number

Package Options

Packing

LR745N3-G

TO-92

1000/Bag

2000/Reel

GND

LR745N3-G P002

LR745N3-G P003

LR745N3-G P005

LR745N3-G P013

LR745N3-G P014

LR745N8-G

TO-92

VOUT

VIN

TO-92

GND

VIN

TO-92

GND

TO-92

TO-243AA (SOT-89)

TO-92

TO-243AA (SOT-89)

Package Marking

-G denotes a lead (Pb)-free / RoHS compliant package

Y = Last Digit of Year Sealed

W = Code for Week Sealed

L = Lot Number

SiLR

7 4 5

Typical Thermal Resistance

θ_ja(^OC/W)

132^OC/W

133^OC/W

YWLL

Package

= “Green” Packaging

TO-92

Package may or may not include the following marks: Si or

TO-243AA (SOT-89)

TO-92

W = Code for Week Sealed

LR7W

Absolute Maximum Ratings

Parameter

= “Green” Packaging

Value

Package may or may not include the following marks: Si or

Input voltage

450V

TO-243AA (SOT-89)

Output voltage

25V

Operating and storage temperature

-55°C to +150^OC

Absolute Maximum Ratings are those values beyond which damage to the device may

occur. Functional operation under these conditions is not implied. Continuous operation

of the device at the absolute rating level may affect device reliability. All voltages are

referenced to device ground.

Doc.# DSFP-LR745

C080113

Supertex inc.

www.supertex.com

12 3 4 5 6 7

中文翻译

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与LR745N3-GP013相关器件

型号	品牌	获取价格	描述	数据表
LR745N3-G-P013	MICROCHIP	获取价格	High-Input Voltage SMPS Start-up
LR745N8	SUPERTEX	获取价格	High Input Voltage SMPS Start-up Circuit
LR745N8-G	MICROCHIP	获取价格	High-Input Voltage SMPS Start-up
LR745N8-G	SUPERTEX	获取价格	Analog Circuit, 1 Func, PSSO3, GREEN, TO-243AA, SOT-89, 3 PIN
LR745N8-G-P003	MICROCHIP	获取价格	High-Input Voltage SMPS Start-up
LR745N8-G-P013	MICROCHIP	获取价格	High-Input Voltage SMPS Start-up
LR745ND	ETC	获取价格	Analog IC
LR750Z	SEOUL	获取价格	GREEN OVAL LAMP LED
LR751	SEOUL	获取价格	INFRARED LAMP LED
LR7530	LRC	获取价格	100mA CMOS Low Power LDO Low power consumption

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