LTC4361-1
LTC4361-2
RECOMMENDED FOR NEW DESIGNS
Overvoltage/Overcurrent Protection Controller
- Part Models
- 24
- 1ku List Price
- Starting From $2.36
Overview
- 2.5V to 5.5V Operation
- Overvoltage Protection Up to 80V
- No Input Capacitor or TVS Required for Most Applications
- 2% Accurate 5.8V Overvoltage Threshold
- 10% Accurate 50mV Overcurrent Circuit Breaker
- <1μs Overvoltage Turn-Off, Gentle Shutdown
- Controls N-Channel MOSFET
- Adjustable Power-Up dV/dt Limits Inrush Current
- Reverse Voltage Protection
- Power Good Output
- Low Current Shutdown
- Latchoff (LTC4361-1) or Auto-Retry (LTC4361-2) After Overcurrent
- Available in 8-Lead ThinSOT™ and 8-Lead (2mm × 2mm) DFN Packages
The LTC4361 overvoltage/overcurrent protection controller safeguards 2.5V to 5.5V systems from input supply overvoltage. It is designed for portable devices with multiple power supply options including wall adaptors, car battery adaptors and USB ports.
The LTC4361 controls an external N-channel MOSFET in series with the input power supply. During overvoltage transients, the LTC4361 turns off the MOSFET within 1μs, isolating downstream components from the input supply. Inductive cable transients are absorbed by the MOSFET and load capacitance. In most applications, the LTC4361 provides protection from transients up to 80V without requiring transient voltage suppressors or other external components.
The LTC4361 has a delayed start-up and adjustable dV/dt ramp-up for inrush current limiting. A PWRGD pin provides power good monitoring for VIN. The LTC4361 features a soft shutdown controlled by the ON pin and drives an optional external P-channel MOSFET for negative voltage protection. Following an overvoltage condition, the LTC4361 automatically restarts with a start-up delay. After an overcurrent fault, the LTC4361-1 remains off while the LTC4361-2 automatically restarts after a 130ms start-up delay.
Applications
- USB Protection
- Handheld Computers
- Cell/Smart Phones
- MP3/MP4 Players
- Digital Cameras
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
Video 1
Product Selector Card 3
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC4361CDC-1#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361CDC-1#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361CDC-2#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361CDC-2#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361CTS8-1#TRMPBF | 8-Lead SOT-23 | ||
| LTC4361CTS8-1#TRPBF | 8-Lead SOT-23 | ||
| LTC4361CTS8-2#TRMPBF | 8-Lead SOT-23 | ||
| LTC4361CTS8-2#TRPBF | 8-Lead SOT-23 | ||
| LTC4361HDC-1#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361HDC-1#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361HDC-2#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361HDC-2#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361HTS8-1#TRMPBF | 8-Lead SOT-23 | ||
| LTC4361HTS8-1#TRPBF | 8-Lead SOT-23 | ||
| LTC4361HTS8-2#TRMPBF | 8-Lead SOT-23 | ||
| LTC4361HTS8-2#TRPBF | 8-Lead SOT-23 | ||
| LTC4361IDC-1#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361IDC-1#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361IDC-2#TRMPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361IDC-2#TRPBF | 8-Lead DFN (2mm x 2mm w/ EP) | ||
| LTC4361ITS8-1#TRMPBF | 8-Lead SOT-23 | ||
| LTC4361ITS8-1#TRPBF | 8-Lead SOT-23 | ||
| LTC4361ITS8-2#TRMPBF | 8-Lead SOT-23 | ||
| LTC4361ITS8-2#TRPBF | 8-Lead SOT-23 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
|
LTC4360-1 LTC4360-2 |
RECOMMENDED FOR NEW DESIGNS | Overvoltage Protection Controller |
|
LTC4362-1 LTC4362-2 |
RECOMMENDED FOR NEW DESIGNS | 1.2A Overvoltage/Overcurrent Protector |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC4361-1
- LTC4361-2
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTC4361-1/LTC4361-2 | Overvoltage/Overcurrent Protection Controller with Latch-off/Auto-Retry