Overview
The NCP380HMU15AATBG, produced by onsemi, is a high-side power-distribution switch designed to handle applications with heavy capacitive loads and potential short-circuits. This device integrates a P-channel MOSFET and is available in various packages, including the UDFN6 and TSOP-5/6 packages. It features adjustable or fixed current limiting, making it versatile for different application requirements. The NCP380 includes several protection mechanisms such as overcurrent protection, thermal shutdown, and reverse voltage protection, ensuring robust and reliable operation.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operational Power Supply | VIN | 2.5 | - | 5.5 | V |
| Ambient Temperature Range | TA | -40 | 25 | 85 | °C |
| Junction Temperature Range | TJ | -40 | 25 | 125 | °C |
| Current Limit (Fixed) | ILIM | 0.5 A, 1 A, 1.5 A, 2 A, 2.1 A | - | - | A |
| Static Drain-source On-state Resistance (UDFN Package) | RDS(on) | - | 55 | 75 | mΩ |
| ESD Withstand Voltage (IEC 61000-4-2) | ESD IEC | - | - | 15 kV (Air), 8 kV (Contact) | kV |
| Thermal Shutdown Threshold | TSD | - | - | 140 | °C |
Key Features
- Operating voltage range: 2.5 V to 5.5 V
- High-side P-channel MOSFET with low on-state resistance (RDS(on))
- Current limit adjustable from 500 mA to 2.1 A or fixed at various levels
- Under voltage lock-out (UVLO) and built-in soft-start
- Thermal protection and soft turn-off
- Reverse voltage protection
- FLAG logic output for fault indication (overcurrent, reverse-voltage, overtemperature)
- Enable input active high or low
- Compliance to IEC61000-4-2 (Level 4) and UL listed
- Pb-free devices
Applications
- Laptops
- USB ports and hubs
- Televisions
Q & A
- What is the operating voltage range of the NCP380?
The operating voltage range of the NCP380 is from 2.5 V to 5.5 V.
- How is the current limit set on the NCP380?
The current limit can be set either by using an external resistor for adjustable versions or it can be fixed at various levels (0.5 A, 1 A, 1.5 A, 2 A, 2.1 A).
- What protection mechanisms are built into the NCP380?
The NCP380 includes overcurrent protection, thermal shutdown, reverse voltage protection, and under voltage lock-out (UVLO).
- What is the purpose of the FLAG pin on the NCP380?
The FLAG pin is an active-low open-drain output that asserts low during overcurrent, reverse-voltage, or overtemperature conditions.
- How does the NCP380 handle heavy capacitive loads?
The NCP380 limits the output current to the IOCP threshold value until the charge of the capacitor is completed, thereby preventing large current and voltage surges.
- What are the package options available for the NCP380?
The NCP380 is available in UDFN6, TSOP-5, and TSOP-6 packages.
- Is the NCP380 compliant with any specific standards?
Yes, the NCP380 is compliant to IEC61000-4-2 (Level 4) and is UL listed.
- What is the thermal shutdown threshold of the NCP380?
The thermal shutdown threshold of the NCP380 is 140°C.
- How does the enable input work on the NCP380?
The enable input can be driven by a logic signal (CMOS or TTL compatible) and can be active high or low.
- Are the NCP380 devices Pb-free?
Yes, the NCP380 devices are Pb-free.
