LTC4381CDKE-4#PBF

LTC4381 Low Quiescent Current Surge Stopper with 9mΩ MOSFET FEATURES n n n n n n n n n n n n n n DESCRIPTION Withstands Surge Voltages Up to 100V Internal 9mΩ N-Channel MOSFET Guaranteed Safe Operating Area: 20ms at 70V, 1A Low Quiescent Current: 6µA Operating Operates Through Automobile Cold Crank Wide Operating Voltage Range: 4V to 72V Overcurrent Protection Selectable Internal 28.5V/47V ...
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Корпус DFN32
Кол-во защищаемых линий (каналов)
Примечание Low Quiescent Current Surge Stopper with 9mΩ MOSFET
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LTC4381 Low Quiescent Current Surge Stopper with 9mΩ MOSFET FEATURES n n n n n n n n n n n n n n DESCRIPTION Withstands Surge Voltages Up to 100V Internal 9mΩ N-Channel MOSFET Guaranteed Safe Operating Area: 20ms at 70V, 1A Low Quiescent Current: 6µA Operating Operates Through Automobile Cold Crank Wide Operating Voltage Range: 4V to 72V Overcurrent Protection Selectable Internal 28.5V/47V or Adjustable Output Clamp Voltage (Table 1) Reverse Input Protection to –60V Adjustable Turn-On Threshold Adjustable Fault Timer with MOSFET Stress Acceleration Latchoff and Retry Options (Table 1) Low Retry Duty Cycle During Faults (Table 1) 32-Lead DFN (7mm × 5mm) Package The LTC®4381 is an integrated solution for low quiescent current surge stopper applications that protect loads from high voltage transients. Overvoltage protection is provided by clamping the gate voltage of an internal 9mΩ N-channel MOSFET to limit the output voltage to a safe value during overvoltage events such as load dump in automobiles. The MOSFET safe operating area is production tested and guaranteed for the stresses during high voltage transients. Fixed output clamp voltages are selectable for 12V and 24V/28V systems. For systems of any voltage up to 80V, use the adjustable clamp versions. Overcurrent protection is also provided. An internal multiplier generates a TMR pin current proportional to VDS and ID, so that operating time in both overcurrent and overvoltage conditions is limited in accordance with MOSFET stress. The GATE pin can drive back-to-back MOSFETs for reverse input protection, eliminating the voltage drop and dissipation of a Schottky diode solution. A low 6µA operating current permits use in always-on and battery powered applications. APPLICATIONS n n n n n Automotive 12V, 24V and 48V System Avionic/Industrial Surge Protection Hot Swap/Live Insertion High Side Switch for Battery Powered Systems Automotive Load Dump Protection All registered trademarks and trademarks are the property of their respective owners. TYPICAL APPLICATION 12V System with 100V/0.5A/400ms Load Dump Overvoltage Protection VIN 12V (100VPK) 20k 200k IN SRC DRN SNS VCC OUT ON 0.1µF 68V CMHZ5266B LTC4381-2 GFET 80mΩ 22µF 10Ω GATE SEL FLT TMR GND 10µF 4381 TA01a 12V, 0.5A with 100V Overvoltage Protection 12V/0.5A OUTPUT CLAMPED AT 28.5V 100V INPUT SURGE ILOAD = 0.5A VIN 20V/DIV 12V 33Ω 47nF VOUT 12V 20V/DIV 100ms/DIV 4381 TA01b Rev. 0 Document Feedback For more information www.analog.com 1 PDF
Документация на серию LTC4381 

LTC4381 (Rev. 0) Low Quiescent Current Surge Stopper with 9mΩ MOSFET

Дата модификации: 13.04.2021

Размер: 2.05 Мб

24 стр.

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