Overview
The NCV361SNT1G, produced by onsemi, is a USB Positive Overvoltage Protection Controller designed to protect systems from overvoltage conditions. This device integrates an internal PMOS FET, eliminating the need for external components and thus reducing system cost and PCB area. It provides comprehensive protection against positive overvoltages up to 20 V, undervoltages, overcurrent, and thermal faults. The NCV361SNT1G is particularly suited for applications requiring robust voltage protection, such as USB devices, mobile phones, and personal digital devices.
Key Specifications
| Characteristic | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Input Voltage Range | Vin | 1.2 | - | 20 | V |
| Undervoltage Lockout Threshold | UVLO | 2.85 | 3.0 | 3.15 | V |
| Overvoltage Lockout Threshold | OVLO | 5.43 | 5.675 | 5.9 | V |
| Overcurrent Limit | Ilim | 550 | 750 | 950 | mA |
| Supply Quiescent Current | Idd | 20 | 35 | - | µA |
| Operating Ambient Temperature Range | TA | -40 | - | 85 | °C |
| Thermal Shutdown Temperature | Tsd | - | - | 150 | °C |
Key Features
- Overvoltage Protection: Up to 20 V with instantaneous disconnection of output from input if the input voltage exceeds the overvoltage threshold (OVLO).
- On-chip PMOS Transistor: No external device necessary, reducing system cost and PCB area.
- Undervoltage Lockout (UVLO): Ensures proper operation by keeping the output disconnected until the input voltage is above 3.0 V nominal.
- Overcurrent Protection: The integrated PMOS turns off when the charge current exceeds the current limit.
- Alert FLAG Output: Alerts the system of voltage, current, or overtemperature faults.
- EN Enable Pin: Allows for external control of the device.
- Thermal Shutdown: Protects against thermal faults with a shutdown temperature of 150°C.
- ESD Protection: ESD-protected input (15 kV Air) when bypassed with a 1.0 µF or larger capacitor.
- Packages: Available in UDFN-6 2x2 mm and TSOP-5 3x3 mm packages.
Applications
- USB Devices: Protects against overvoltage conditions in USB applications.
- Mobile Phones: Ensures robust voltage protection in mobile phone designs.
- Personal Digital Applications: Suitable for MP3 players, set-top boxes, and other personal digital devices.
- Peripherals: Protects peripheral devices from overvoltage conditions.
- Computing: Used in various computing applications requiring voltage protection.
Q & A
- What is the primary function of the NCV361SNT1G?
The primary function of the NCV361SNT1G is to provide overvoltage protection for systems, ensuring they are protected against positive voltages up to 20 V and other fault conditions.
- What types of packages are available for the NCV361SNT1G?
The NCV361SNT1G is available in UDFN-6 2x2 mm and TSOP-5 3x3 mm packages.
- How does the device protect against overcurrent conditions?
The device protects against overcurrent conditions by turning off the integrated PMOS when the charge current exceeds the current limit.
- What is the purpose of the FLAG output?
The FLAG output alerts the system that voltage, current, or overtemperature faults have occurred.
- What is the thermal shutdown temperature of the NCV361SNT1G?
The thermal shutdown temperature of the NCV361SNT1G is 150°C.
- Does the NCV361SNT1G have ESD protection?
Yes, the NCV361SNT1G has ESD-protected input (15 kV Air) when bypassed with a 1.0 µF or larger capacitor.
- What is the undervoltage lockout threshold of the NCV361SNT1G?
The undervoltage lockout threshold of the NCV361SNT1G is between 2.85 V and 3.15 V.
- What is the overvoltage lockout threshold of the NCV361SNT1G?
The overvoltage lockout threshold of the NCV361SNT1G is between 5.43 V and 5.9 V.
- What is the operating ambient temperature range of the NCV361SNT1G?
The operating ambient temperature range of the NCV361SNT1G is from -40°C to 85°C.
- Is the NCV361SNT1G Pb-free?
Yes, the NCV361SNT1G is a Pb-free device.
