Overview
The NCP380HMU21AATBG, produced by onsemi, is a high-side power-distribution switch designed to handle applications with heavy capacitive loads and potential short-circuits. This device features an integrated P-channel MOSFET and is available in various packages, including the UDFN6 and TSOP packages. It is engineered to protect the input supply voltage from overcurrent, reverse voltage, and thermal overload conditions. The NCP380 also includes a soft-start circuit to manage large current and voltage surges during startup.
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 (DFN 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
- Integrated 70 mΩ high-side MOSFET
- Current limit: User adjustable from 500 mA to 2.1 A or fixed at 500 mA, 1 A, 1.5 A, 2 A, and 2.1 A
- Under Voltage Lock-out (UVLO)
- Built-in Soft-start circuitry
- Thermal Protection with thermal shutdown and rearming
- Soft Turn-off
- Reverse Voltage Protection
- Enable input active high or low (EN or EN)
- Compliance to IEC61000-4-2 (Level 4) for ESD protection
- UL Listed (File No. E343275 for NCP versions only)
- AEC-Q100 qualified and PPAP capable for automotive applications
- Pb-Free devices
Applications
- Laptops
- USB Ports/Hubs
- TVs
Q & A
- What is the operating voltage range of the NCP380? The operating voltage range 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 (adjustable) or it can be fixed at various predefined values (500 mA, 1 A, 1.5 A, 2 A, 2.1 A).
- What protection features does the NCP380 offer? The NCP380 offers under voltage lock-out (UVLO), thermal protection, soft turn-off, and reverse voltage protection.
- How does the soft-start circuitry work? The soft-start circuitry helps in managing large current and voltage surges during startup by gradually increasing the output voltage.
- What is the purpose of the FLAG pin? The FLAG pin is an active-low open-drain output that asserts low during overcurrent, reverse-voltage, or overtemperature conditions.
- What are the ESD protection capabilities of the NCP380? The NCP380 complies with IEC61000-4-2 (Level 4) and can withstand 15 kV (Air) and 8 kV (Contact) ESD.
- Is the NCP380 suitable for automotive applications? Yes, the NCP380 is AEC-Q100 qualified and PPAP capable, making it suitable for automotive applications.
- How is the thermal shutdown feature implemented? The thermal shutdown turns off the power MOSFET if the die temperature exceeds 140°C, with a hysteresis to prevent immediate turn-on until the temperature cools down to 115°C.
- Can the enable input be configured as active high or low? Yes, the enable input (EN) can be configured as either active high or low.
- What are the package options available for the NCP380? The NCP380 is available in UDFN6, TSOP-5, and TSOP-6 packages.
