Overview
The NCV4276B is a 400 mA output current integrated low dropout regulator designed for use in harsh automotive environments. It is part of the NCV4276B family offered by onsemi. This regulator is available in 3.3 V, 5.0 V, and adjustable voltage versions, each with a ±2% output voltage accuracy. The device features a wide operating temperature range and high peak input voltage tolerance, making it suitable for demanding automotive applications.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage | VI | -42 | 45 | V | |
| Input Peak Transient Voltage | VI | 45 | V | ||
| Output Voltage (5.0 V Version) | VQ | 4.9 | 5.0 | 5.1 | V |
| Output Voltage (3.3 V Version) | VQ | 3.234 | 3.3 | 3.366 | V |
| Output Voltage (Adjustable Version) | AVQ | -2% | +2% | V | |
| Output Current Limitation | IQ | 400 | 1100 | mA | |
| Dropout Voltage (5.0 V Version) | VDR | 500 | mV | ||
| Load Regulation | ΔVQ,LO | 20 | mV | ||
| Line Regulation | ΔVQ | 15 | mV | ||
| Power Supply Ripple Rejection | PSRR | 70 | dB | ||
| Thermal Shutdown Temperature | TSD | 150 | 210 | °C |
Key Features
- Available in 3.3 V, 5.0 V, and adjustable voltage versions (from 2.5 V to 20 V) with ±2% output voltage accuracy.
- 400 mA output current capability.
- Low dropout voltage: 500 mV (max) for the 5.0 V output version.
- Inhibit input for control of the output voltage state.
- Very low current consumption.
- Fault protection including +45 V peak transient voltage, -42 V reverse voltage, short circuit, and thermal overload protection.
- Pb-Free devices.
- Available in DPAK and D2PAK surface mount packages.
- Stable output over a wide output capacitance and ESR range.
- Improved startup behavior during input voltage transients.
Applications
The NCV4276B is designed for use in harsh automotive environments and other applications requiring robust voltage regulation. It is suitable for various automotive systems, including infotainment, safety systems, and other electronic control units. Additionally, it can be used in industrial and consumer electronics where reliable and stable voltage regulation is critical.
Q & A
- What is the maximum output current of the NCV4276B?
The maximum output current of the NCV4276B is 400 mA.
- What are the available output voltage versions for the NCV4276B?
The NCV4276B is available in 3.3 V, 5.0 V, and adjustable voltage versions (from 2.5 V to 20 V).
- What is the dropout voltage for the 5.0 V output version?
The dropout voltage for the 5.0 V output version is up to 500 mV.
- Does the NCV4276B have fault protection features?
Yes, the NCV4276B includes fault protection features such as +45 V peak transient voltage, -42 V reverse voltage, short circuit, and thermal overload protection.
- What are the package options for the NCV4276B?
The NCV4276B is available in DPAK and D2PAK surface mount packages.
- How does the inhibit input function on the NCV4276B?
The inhibit input allows for control of the output voltage state, enabling or disabling the regulator.
- What is the thermal shutdown temperature for the NCV4276B?
The thermal shutdown temperature for the NCV4276B is between 150°C and 210°C.
- Is the NCV4276B Pb-Free?
Yes, the NCV4276B is a Pb-Free device.
- What is the power supply ripple rejection (PSRR) of the NCV4276B?
The power supply ripple rejection (PSRR) of the NCV4276B is 70 dB at 100 Hz.
- How stable is the output voltage over different output capacitance and ESR ranges?
The output voltage of the NCV4276B is stable over a wide range of output capacitance and ESR values.
- What is the quiescent current consumption of the NCV4276B in sleep mode?
The quiescent current consumption in sleep mode is typically 10 μA.
