Datasheet > LTC4251

LTC4251

更新时间： 2024-11-20 21:55:31

品牌	Logo	应用领域
凌特 - Linear		控制器
页数	文件大小	规格书
12页	231K
描述
Negative 48V Hot Swap 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

LTC4251 数据手册

LT4250L/LT4250H

Negative 48V

Hot Swap Controller

FEATURES

DESCRIPTIO

TheLT^®4250L/LT4250Hare8-pin,negative48VHotSwap^TM

controllers that allow a board to be safely inserted and

removedfromalivebackplane. Inrushcurrentislimitedto

aprogrammablevaluebycontrollingthegatevoltageofan

external N-channel pass transistor. The pass transistor is

turned off if the input voltage is less than the program-

mable undervoltage threshold or greater than the over-

voltage threshold. A programmable current limit protects

the system against shorts. After a 500µs timeout the

current limit activates the electronic circuit breaker. The

PWRGD (LT4250L) or PWRGD (LT4250H) signal can be

used to directly enable a power module. The LT4250L is

designed for modules with a low enable input and the

LT4250H for modules with a high enable input.

■

Allows Safe Board Insertion and Removal

from a Live –48V Backplane

■

Circuit Breaker Immunity to Voltage Steps and

Current Spikes

■

Programmable Inrush and

Short-Circuit Current Limits

■

Pin Compatible with LT1640L/LT1640H

■

Operates from –20V to –80V

■

Programmable Overvoltage Protection

■

Programmable Undervoltage Lockout

■

Power Good Control Output

■

^{Bell-Core Compa}U^{tible ON/OFF Threshold}

APPLICATIO S

■

The LT4250L/LT4250H are available in 8-pin PDIP and SO

packages.

Central Office Switching

■

–48V Distributed Power Systems

■

, LTC and LT are registered trademarks of Linear Technology Corporation.

Negative Power Supply Control

Hot Swap is a trademark of Linear Technology Corporation.

TYPICAL APPLICATIO

–48V RTN

(SHORT PIN)

–48V RTN

R4^†

Voltage Step On Input Supply

549k

UV =

R5^†

6.49k

38.5V

LT4250L

PWRGD

RELEASE

AT 43V

R6^†

10k

OV =

71V

SENSE

GATE

DRAIN

AND

DRAIN

20V/DIV

R3^†

1k, 5%

0.1µF

10V

C1^†

470nF

25V

10Ω

C2^†

15nF

100V

–48V

INPUT 1

R1^†

0.02Ω

(Q1)

5A/DIV

IRF530

ON/OFF

–

–48V

500µs/DIV

OUT

SENSE

INPUT 2

0.1µF

100V

* DIODES INC. SMAT70A

100µF

TRIM

100µF

16V

^†THESE COMPONENTS ARE APPLICATION

SPECIFIC AND MUST BE SELECTED BASED

UPON OPERATING CONDITIONS AND DESIRED

PERFORMANCE. SEE APPLICATIONS

INFORMATION.

100V

–

SENSE

–

OUT

4250 TA01

LUCENT

JW050A1-E

4250lhf

12 3 4 5 6 7...12

中文翻译

下载PDF

与LTC4251相关器件

型号	品牌	获取价格	描述	数据表
LTC4251_12	Linear	获取价格	Negative Voltage Hot Swap Controllers in SOT-23
LTC4251_15	Linear	获取价格	Negative Voltage Hot Swap Controllers in SOT-23
LTC4251-1	Linear	获取价格	Negative voltage Hot Swap controllers in SOT-23
LTC4251-1_15	Linear	获取价格	Negative Voltage Hot Swap Controllers in SOT-23
LTC4251-1CS6	Linear	获取价格	Negative Voltage Hot Swap Controllers in SOT-23
LTC4251-1CS6#TR	Linear	获取价格	LTC4251 - Negative Voltage Hot Swap Controllers in SOT-23; Package: SOT; Pins: 6; Temperat
LTC4251-1CS6#TRM	Linear	获取价格	LTC4251 - Negative Voltage Hot Swap Controllers in SOT-23; Package: SOT; Pins: 6; Temperat
LTC4251-1CS6#TRMPBF	Linear	获取价格	LTC4251 - Negative Voltage Hot Swap Controllers in SOT-23; Package: SOT; Pins: 6; Temperat
LTC4251-1CS6#TRPBF	Linear	获取价格	LTC4251 - Negative Voltage Hot Swap Controllers in SOT-23; Package: SOT; Pins: 6; Temperat
LTC4251-1IS6	Linear	获取价格	Negative Voltage Hot Swap Controllers in SOT-23

与LTC4251相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

30
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

22
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

51
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

49

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC4251

LTC4251 数据手册

与LTC4251相关器件

与LTC4251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

LTC4251

LTC4251 数据手册

与LTC4251相关器件

与LTC4251相关文章

您还可以找

您在本页遇到什么问题？