Overview
The NCP382HD05AAR2G is a single input, dual output high side power distribution switch designed by onsemi. This device is specifically tailored for applications where heavy capacitive loads and short circuits are likely to occur. It incorporates two 80 mΩ, P-channel MOSFETs in a single package, making it ideal for managing power distribution in various electronic systems.
The NCP382HD05AAR2G limits the output current to a desired level by switching into a constant current mode when the output load exceeds the current limit threshold or a short is present. The current limit threshold is internally fixed, and the power switches' rise and fall times are controlled to minimize current ringing during switching.
The device includes several protective features such as undervoltage lockout, soft start to prevent inrush current, thermal protection, and soft turn-off. It is controlled by a logic enable input that can be active high or low.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | 2.5 | 5.5 | V | |
| High-Side MOSFET Resistance (RDS(on)) | 80 | 110 | 140 | mΩ |
| Current Limit Threshold | 0.5 | 1.5 | A | |
| Undervoltage Lockout (VUVLO) | 2.0 | 2.35 | 2.5 | V |
| Thermal Shutdown Threshold (TSD) | 140 | °C | ||
| ESD Withstand Voltage (IEC 61000-4-2) | 8 kV (Contact), 15 kV (Air) | |||
| Maximum Junction Temperature (TJ) | -40 | 125 | °C | |
| Enable Input Voltage (VENx) | 0 | 5.5 | V | |
| FLAG Pin Sink Current (ISINK) | 1.0 | mA |
Key Features
- High-Side MOSFETs: Two 80 mΩ P-channel MOSFETs integrated in a single package.
- Current Limiting: Fixed current limit thresholds of 0.5 A, 1.0 A, and 1.5 A.
- Undervoltage Lockout (UVLO): Prevents the output from being connected to the input until the input voltage is above the UVLO threshold.
- Soft Start: Prevents inrush current by gradually increasing the output voltage.
- Thermal Protection: Thermal shutdown and regulation to prevent overheating.
- Soft Turn-Off: Controlled turn-off to minimize voltage spikes.
- Enable Input: Active high or low logic enable input.
- ESD Protection: Compliance with IEC61000-4-2 (Level 4) for ESD protection.
- Certifications: UL listed and IEC60950 certified.
Applications
- Laptops
- USB Ports/Hubs
- TVs
- Hot swap controllers and electronic fuses in hot swap applications.
Q & A
- What is the operating voltage range of the NCP382HD05AAR2G?
The operating voltage range is from 2.5 V to 5.5 V.
- What are the current limit thresholds available for the NCP382HD05AAR2G?
The current limit thresholds are fixed at 0.5 A, 1.0 A, and 1.5 A.
- What is the purpose of the undervoltage lockout (UVLO) feature?
The UVLO feature prevents the output from being connected to the input until the input voltage is above the UVLO threshold, providing noise immunity to transient conditions.
- How does the soft start feature work?
The soft start feature prevents inrush current by gradually increasing the output voltage, thereby limiting large current and voltage surges.
- What is the thermal shutdown threshold for the NCP382HD05AAR2G?
The thermal shutdown threshold is 140°C.
- Is the NCP382HD05AAR2G ESD protected?
Yes, it is compliant with IEC61000-4-2 (Level 4) for ESD protection, withstanding 8 kV (Contact) and 15 kV (Air).
- What certifications does the NCP382HD05AAR2G hold?
The device is UL listed and IEC60950 certified.
- How is the enable input controlled?
The enable input can be controlled as either active high or active low.
- 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.
- What are some typical applications for the NCP382HD05AAR2G?
Typical applications include laptops, USB ports/hubs, TVs, and hot swap controllers.
