Overview
The NCP382LD10AAR2G 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 and dual outputs, incorporating an integrated 80 mΩ P-channel MOSFET. It is designed to protect the input supply voltage under various adverse conditions, including overcurrent and overtemperature scenarios. The NCP382LD10AAR2G includes advanced protection mechanisms such as current limiting, undervoltage lockout, and thermal shutdown, ensuring reliable operation in demanding environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | 2.5 | 5.5 | V | |
| Current Limit | 1.0 | 1.4 | A | |
| Static Drain-Source On-State Resistance | 80 | 110 | 140 | mΩ |
| Output Rise Time | 0.3 | 1.0 | 1.5 | ms |
| Output Fall Time | 0.1 | 0.5 | ms | |
| Enable Input Voltage | 0.4 | 1.2 | V | |
| Maximum Junction Temperature | -40 | 125 | °C | |
| Thermal Shutdown Threshold | 140 | °C |
Key Features
- Fixed Current Limiting: Limits the output current to 1 A to protect against overcurrent conditions.
- Undervoltage Lockout (UVLO): Prevents the device from operating below a specified input voltage threshold.
- Soft-Start and Soft Turn-Off: Reduces inrush current and voltage surges during power-on and power-off cycles.
- Thermal Protection: Includes thermal shutdown and regulation to prevent damage from high temperatures.
- Enable Active High or Low: Allows the device to be controlled by either a high or low logic signal.
- FLAG Logic Output: Provides an active-low open-drain output that asserts low during overcurrent or overtemperature conditions.
- Compliance and Certifications: Compliant with IEC61000-4-2 and certified to IEC60950 Edition 2, Amendments 1 & 2 (CB Scheme).
Applications
- Laptops
- USB Ports and Hubs
- Televisions
- Other devices requiring high-side power distribution with robust protection features
Q & A
- What is the operating voltage range of the NCP382LD10AAR2G?
The operating voltage range is from 2.5 V to 5.5 V.
- What is the current limit for the NCP382LD10AAR2G?
The current limit is fixed at 1 A.
- What protection mechanisms does the NCP382LD10AAR2G include?
The device includes undervoltage lockout, thermal protection, and overcurrent protection.
- How is the device controlled?
The device can be controlled by either a high or low logic signal on the enable input.
- What is the purpose of the FLAG logic output?
The FLAG logic output asserts low during overcurrent or overtemperature conditions.
- What are the typical applications for the NCP382LD10AAR2G?
Typical applications include laptops, USB ports and hubs, and televisions.
- What certifications does the NCP382LD10AAR2G hold?
The device is compliant with IEC61000-4-2 and certified to IEC60950 Edition 2, Amendments 1 & 2 (CB Scheme).
- 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 is the thermal shutdown threshold for the NCP382LD10AAR2G?
The thermal shutdown threshold is 140°C.
- How does the device handle short-circuit conditions?
The device switches into a constant-current mode to limit the output current during short-circuit conditions.
