Overview
The NCV380LMUAJAATBG is a high-side power distribution switch produced by onsemi, designed for applications where heavy capacitive loads and short-circuits are likely to be encountered. This device features an integrated P-channel MOSFET with a low on-state resistance of 55 mΩ (in DFN package), making it suitable for various power management tasks. The switch includes several protection mechanisms such as overcurrent protection, reverse-voltage detection, and thermal shutdown, ensuring robust and reliable operation.
Key Specifications
| Parameter | Symbol | Value | Unit | Conditions |
|---|---|---|---|---|
| Input/Output Voltage Range | VIN, VOUT | −7.0 to +7.0 | V | From IN to OUT Pins |
| Enable Voltage | VEN | 0 to 5.5 | V | |
| Ambient Temperature Range | TA | −40 to +85 | °C | |
| Junction Temperature Range | TJ | −40 to +125 | °C | |
| Static Drain-source On-state Resistance | RDS(on) | 55 to 75 mΩ (DFN), 70 to 95 mΩ (TSOP) | mΩ | VIN = 5 V, −40°C < TJ < 125°C |
| Maximum Output Current | IOUT | 2.1 A | A | |
| Thermal Shutdown Threshold | TSD | 140 °C | °C | |
| FLAG Output Low Voltage | VOL | 400 mV | mV | IFLAG = 1 mA |
Key Features
- Integrated P-Channel MOSFET: With a low on-state resistance of 55 mΩ in DFN package, suitable for high-efficiency power distribution.
- Overcurrent Protection: Switches into a constant-current regulation mode when the output current exceeds the current-limit threshold.
- Reverse-Voltage Detection: Disables the power-switch if the output voltage is higher than the input voltage to protect devices on the input side.
- Thermal Shutdown: Protects against overheating by shutting down the switch at 140°C and rearming at 115°C.
- FLAG Logic Output: Asserts low during overcurrent, reverse-voltage, or over-temperature conditions, providing real-time fault indication.
- Soft Start Circuitry: Limits large current and voltage surges during startup.
- Adjustable Current Limiting: Allows the user to program the current limit threshold using an external resistor (for adjustable versions).
- ESD Protection: Withstands ESD voltages up to 15 kV (IEC 61000-4-2) and 2,000 V (Human Body Model).
Applications
- USB Power Distribution: Ideal for USB ports and hubs where heavy capacitive loads and short-circuits are common.
- Automotive Systems: Compliant with AEC-Q100 standards, making it suitable for automotive applications.
- Consumer Electronics: Used in various consumer electronic devices requiring robust power management.
- Industrial Power Systems: Applicable in industrial settings where reliable power distribution is critical.
Q & A
- What is the maximum output current of the NCV380LMUAJAATBG?
The maximum output current is 2.1 A.
- What is the typical on-state resistance of the NCV380LMUAJAATBG in DFN package?
The typical on-state resistance is 55 mΩ.
- What protection mechanisms does the NCV380LMUAJAATBG include?
The device includes overcurrent protection, reverse-voltage detection, and thermal shutdown.
- How does the FLAG logic output work?
The FLAG pin asserts low during overcurrent, reverse-voltage, or over-temperature conditions.
- What is the thermal shutdown threshold of the NCV380LMUAJAATBG?
The thermal shutdown threshold is 140°C.
- Is the NCV380LMUAJAATBG compliant with automotive standards?
Yes, it is compliant with AEC-Q100 standards.
- What is the ambient temperature range for the NCV380LMUAJAATBG?
The ambient temperature range is −40°C to +85°C.
- Can the current limit threshold be adjusted?
Yes, the current limit threshold can be adjusted using an external resistor for adjustable versions.
- What is the ESD withstand voltage of the NCV380LMUAJAATBG?
The device withstands ESD voltages up to 15 kV (IEC 61000-4-2) and 2,000 V (Human Body Model).
- What type of package does the NCV380LMUAJAATBG come in?
The device comes in a 6-UDFN (2x2) package.
