Datasheet > LT3850

LT3850

更新时间： 2024-02-09 05:59:38

品牌	Logo	应用领域
凌特 - Linear		控制器
页数	文件大小	规格书
16页	367K
描述
UV, OV and Reverse Supply Protection Controller Low Operating Current: 125μA

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LT3850 数据手册

LTC4365

UV, OV and Reverse

Supply Protection Controller

FEATURES

DESCRIPTION

The LTC^®4365 protects applications where power supply

input voltages may be too high, too low or even negative.

It does this by controlling the gate voltages of a pair of

external N-channel MOSFETs to ensure that the output

stays within a safe operating range.

Wide Operating Voltage Range: 2.5V to 34V

Overvoltage Protection to 60V

Reverse Supply Protection to –40V

Blocks 50Hz and 60Hz AC Power

No Input Capacitor or TVS Required for Most

Applications

The LTC4365 can withstand voltages between –40V and

60V and has an operating range of 2.5V to 34V, while

consuming only 125μA in normal operation.

Adjustable Undervoltage and Overvoltage

Protection Range

Charge Pump Enhances External N-Channel MOSFET

Two comparator inputs allow configuration of the

overvoltage(OV)andundervoltage(UV)setpointsusingan

externalresistivedivider.Ashutdownpinprovidesexternal

control for enabling and disabling the MOSFETs as well

as placing the device in a low current shutdown state. A

fault output provides status of the gate pin pulling low. A

fault is indicated when the part is in shutdown or the input

voltage is outside the UV and OV set points.

Low Operating Current: 125μA

Low Shutdown Current: 10μA

Fault Status Output

Compact 8-Lead, 3mm × 2mm DFN and

TSOT-23 (ThinSOT™) Packages

APPLICATIONS

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

Portable Instrumentation

ThinSOT, No R

and Hot Swap are trademarks of Linear Technology Corporation. All other

SENSE

Industrial Automation

trademarks are the property of their respective owners.

Laptops

Automotive

TYPICAL APPLICATION

12V Automotive Application

Load Protected from Reverse and Overvoltage at V_IN

Si4946

UV = 3.5V

OV = 18V

OUT

12V

30V

VALID

WINDOW

GATE

OUT

GND

LTC4365

OUT

510k

SHDN

1820k

10V/DIV

–30V

FAULT

243k

59k

4365 TA01b

1s/DIV

OV = 18V

UV = 3.5V

GND

4365 TA01a

4365f

12 3 4 5 6 7...16

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