FEATURES
Description
The LTC®4380 low quiescent current surge stopper protects loads from high voltage transients. Overvoltage protection is provided by clamping the gate voltage of an external N-channel MOSFET to limit the output voltage to a safe value during overvoltage events such as load dump in automobiles. Fixed gate clamp voltages are selectable for 12V and24V/28V systems. For systems of any voltage up to72V, use the adjustable gate clamp versions. Overcurrent protection is also provided.
Features
Low Quiescent Current: 8µA Operating, 6µA Shutdown
Withstands Surge Voltage Up to the MOSFET Limit
Wide Operating Voltage Range: 4V to 72V
Overcurrent Protection
Selectable Internal 31.5V/50V or Adjustable Gate Clamp Voltage (Table 1)
Reverse Input Protection to –60V
Adjustable Turn-On Threshold
Adjustable Fault Timer with MOSFET Stress Acceleration
Controls N-Channel MOSFET
Latchoff and Retry Options (Table 1)
Low Retry Duty Cycle During Faults (Table 1)
10-Pin DFN (3mm × 3mm) and MSOP Packages
Applications
Automotive/Avionic/Industrial Surge Protection
Hot Swap/ Live Insertion
High Side Switch for Battery Powered Systems
Intrinsic Safety Applications
Analog Devices (NASDAQ: ADI) is a world leader in the design, manufacture, and marketing of a broad portfolio of high performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in virtually all types of electronic equipment. Since our inception in 1965, we have focused on solving the engineering challenges associated with signal processing in electronic equipment. Used by over 100,000 customers worldwide, our signal processing products play a fundamental role in converting, conditioning, and processing real-world phenomena such as temperature, pressure, sound, light, speed, and motion into electrical signals to be used in a wide array of electronic devices.