Datasheet > LTC4232-1

LTC4232-1

更新时间： 2022-02-26 14:06:35

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
16页	564K
描述
5A Integrated Hot Swap Controller

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LTC4232-1 数据手册

LTC4232-1

5A Integrated Hot Swap

Controller

FEATURES

DESCRIPTION

The LTC^®4232-1 is an integrated solution for Hot Swap™

applications that allows a board to be safely inserted and

removed from a live backplane. The part integrates a Hot

Swap controller, power MOSFET and current sense resis-

tor in a single package for small form factor applications.

Reduced 16ms Turn-On Delay

Small Footprint

33mΩ MOSFET with R

SENSE

Wide Operating Voltage Range: 2.9V to 15V

Adjustable, 10% Accurate Current Limit

Current and Temperature Monitor Outputs

Overtemperature Protection

Adjustable Current Limit Timer Before Fault

Power Good and Fault Outputs

The LTC4232-1 provides separate inrush current control

and a 10% accurate 5A current limit with foldback cur-

rent limiting. The current limit threshold can be adjusted

dynamically using an external pin. Additional features

include a current monitor output that amplifies the sense

resistor voltage for ground referenced current sensing

andaMOSFETtemperaturemonitoroutput.Thermallimit,

overvoltage, undervoltage and power good monitoring

are also provided.

Adjustable Inrush Current Control

2% Accurate Undervoltage and Overvoltage

Protection

Available in 16-Lead 5mm × 3mm DFN Package

APPLICATIONS

ThePCIExpresscompliantLTC4232-1allowsfasterturn-on

thantheLTC4232byprovidingashorter(16ms)debounce

delay and external control of the GATE ramp rate.

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

Technology Corporation. Hot Swap and PowerPath are trademarks of Linear Technology

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

RAID Systems

Server I/O Cards

PCI Express Systems

Industrial

TYPICAL APPLICATION

12V, 5A Card Resident Application with Auto-Retry

Power-Up Waveforms

12V

OUT

12V

150k

20k

150µF

CONTACT BOUNCE

107k

10V/DIV

10k

FLT

LTC4232DHC-1

1A/DIV

5.23k

10k

3.3nF

100k

OUT

10V/DIV

GATE

4.7nF

TIMER

SET

10V/DIV

0.1µF

INTV

ADC

MON

1µF

GND

20k

42321 TA01a

42321 TA01b

4ms/DIV

*DIODES INC. SMAJ22A

42321f

For more information www.linear.com/LTC4232-1

12 3 4 5 6 7...16

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