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LTC4365
Overvoltage, Undervoltage and Reverse Supply Protection Controller
Overview
Features and Benefits
- Wide Operating Voltage Range: 2.5V to 34V
- Overvoltage Protection to 60V
- Reverse Supply Protection to –40V
- LTC4365: Blocks 50Hz and 60Hz AC Power
- LTC4365-1: Fast (1ms) Recovery from Fault
- No Input Capacitor or TVS Required for Most Applications
- Adjustable Undervoltage and Overvoltage Protection Range
- Charge Pump Enhances External N-Channel MOSFET
- Low Operating Current: 125μA
- Low Shutdown Current: 10μA
- Compact 8-Lead, 3mm × 2mm DFN and TSOT-23 (ThinSOT™) Packages
- AEC-Q100 Qualified for Automotive Applications
Product Details
The LTC4365 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.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.
Two comparator inputs allow configuration of the overvoltage (OV) and undervoltage (UV) set points using an external resistive divider. A shutdown pin provides external 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.
The LTC4365 has a 36ms turn-on delay that debounces live connections and blocks 50Hz to 60Hz AC power. For fast recovery after faults, the LTC4365-1 has a reduced 1ms turn-on delay.
Applications
- Portable Instrumentation
- Industrial Automation
- Laptops
- Automotive Surge Protection
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Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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