Overview
The NCP382HD10AAR2G is a high-side power-distribution switch designed by Onsemi, specifically tailored for applications involving heavy capacitive loads and potential short-circuits. This device features a single input with dual outputs, incorporating an integrated 80 mΩ P-channel MOSFET. It is engineered to protect the input supply voltage under various adverse conditions, including overcurrent and overtemperature scenarios. The NCP382HD10AAR2G includes advanced features such as soft-start, undervoltage lockout, and thermal protection, ensuring reliable and safe operation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | 2.5 | 5.5 | V | |
| Current Limit | 1.0 | 1.2 | A | |
| Static Drain-Source On-State Resistance (RDS(on)) | 80 | 110 | 140 | mΩ |
| Output Rise Time (TR) | 0.3 | 1.0 | 1.5 | ms |
| Output Fall Time (TF) | 0.1 | 0.5 | ms | |
| Enable Input Voltage (VIH/VIL) | 0.4 | 1.2 | V | |
| Thermal Shutdown Threshold (TSD) | 140 | °C | ||
| Maximum Junction Temperature (TJ) | -40 | 125 | °C | |
| ESD Withstand Voltage (IEC 61000-4-2) | 8 kV (Contact), 15 kV (Air) |
Key Features
- Fixed Current Limiting: The device limits the output current to a fixed level of 1 A, preventing overcurrent conditions.
- Soft-Start and Soft Turn-Off: Reduces inrush current and voltage surges during power-on and power-off cycles.
- Undervoltage Lockout (UVLO): Ensures the output remains disconnected from the input until the input voltage exceeds a specified threshold.
- Thermal Protection: Includes thermal shutdown and regulation to prevent damage from high temperatures.
- FLAG Indicator: An active-low open-drain output that asserts low during overcurrent or overtemperature conditions.
- Enable Active High or Low: The device can be controlled by a logic enable input that can be either high or low.
- Compliance and Certifications: Compliant with IEC61000-4-2 (Level 4) and certified to IEC60950 Edition 2, Amendments 1 & 2 (CB Scheme).
Applications
- Laptops and Mobile Devices: Protects against heavy capacitive loads and short circuits in portable electronics.
- USB Ports and Hubs: Ensures safe and reliable power distribution in USB applications.
- Televisions and Consumer Electronics: Provides protection against overcurrent and overtemperature conditions in various consumer devices.
Q & A
- What is the operating voltage range of the NCP382HD10AAR2G?
The operating voltage range is from 2.5 V to 5.5 V.
- What is the current limit for the NCP382HD10AAR2G?
The current limit is fixed at 1 A.
- What is the purpose of the FLAG pin?
The FLAG pin is an active-low open-drain output that asserts low during overcurrent or overtemperature conditions.
- How does the soft-start feature work?
The soft-start feature prevents large current and voltage surges during power-on by gradually increasing the output voltage.
- What certifications does the NCP382HD10AAR2G comply with?
It complies with IEC61000-4-2 (Level 4) and is certified to IEC60950 Edition 2, Amendments 1 & 2 (CB Scheme).
- What is the thermal shutdown threshold for the NCP382HD10AAR2G?
The thermal shutdown threshold is 140°C.
- How does the undervoltage lockout (UVLO) work?
The UVLO ensures the output remains disconnected from the input until the input voltage exceeds a specified threshold, providing noise immunity to transient conditions.
- What is the maximum junction temperature for the NCP382HD10AAR2G?
The maximum junction temperature is 125°C.
- How does the enable input control the device?
The device can be controlled by a logic enable input that can be either high or low, turning the device on or off accordingly.
- What are some typical applications for the NCP382HD10AAR2G?
Typical applications include laptops, USB ports and hubs, and televisions.
