Overview
The NCV5661MN33T2G is a high-performance, low dropout linear regulator from onsemi, designed for high-power applications requiring up to 1.0 A of current. This device is part of the NCP5661/NCV5661 series, which offers both fixed and adjustable output voltage versions. The NCV5661MN33T2G specifically provides a fixed output voltage of 3.3 V. It features ultra-fast transient response times, low noise, and a robust thermal design, making it suitable for a variety of high-current applications.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage | Vin | 2.0 | 9.0 | V | |
| Output Voltage Accuracy (TJ = 25°C, Iout = 10 mA to 1.0 A) | Vout | -1% | +1% | ||
| Output Noise Voltage (f = 10 Hz to 100 kHz) | Vn | 26 | μVrms | ||
| Dropout Voltage (Iout = 1.0 A) | VDO | 1.0 | 1.3 | V | |
| Peak Output Current Limit | Iout | 1.0 | A | ||
| Internal Current Limitation | Ilim | 1.5 | A | ||
| Ripple Rejection (120 Hz) | RR | 70 | dB | ||
| Thermal Shutdown | TSHD | 160 | °C | ||
| Ground Current (Iout = 1.0 A) | Iq | 1.3 | 3.0 | mA | |
| Enable Input Threshold Voltage | Ven | 1.3 | 0.3 | V |
Key Features
- Ultra-Fast Transient Response: Settling time of 1-3 μs.
- Low Noise: 26 μVrms without a bypass capacitor.
- Low Ground Current: Independent of load, with a maximum of 3.0 mA.
- Fixed/Adjustable Output Voltage: Versions available, including a fixed 3.3 V output for the NCV5661MN33T2G.
- Enable Function: Allows for on/off control of the regulator.
- Error Flag (Fixed Output Version): Produces a logic Low when the output voltage drops below the nominal value.
- Current Limit Protection: Internally clamped to 1.5 A to prevent excessive power dissipation.
- Thermal Protection: Thermal shutdown at 160°C.
- Power Supply Rejection Ratio (PSRR): Greater than 65 dB.
- AEC-Q100 Qualified and PPAP Capable: Suitable for automotive and other demanding applications.
Applications
- Servers
- ASIC Power Supplies
- Post Regulation for Power Supplies
- Constant Current Source
- Networking Equipment
- Gaming and Set-Top Box (STB) Modules
Q & A
- What is the maximum output current of the NCV5661MN33T2G?
The maximum output current is 1.0 A.
- What is the input voltage range for the NCV5661MN33T2G?
The input voltage range is from 2.0 V to 9.0 V.
- What is the output voltage accuracy of the NCV5661MN33T2G at 25°C?
The output voltage accuracy is ±1% at 25°C for an output current range of 10 mA to 1.0 A.
- Does the NCV5661MN33T2G have an enable function?
Yes, it has an enable function that allows for on/off control of the regulator.
- What is the thermal shutdown temperature of the NCV5661MN33T2G?
The thermal shutdown temperature is 160°C.
- Is the NCV5661MN33T2G suitable for automotive applications?
Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other demanding applications.
- What is the recommended input capacitor for the NCV5661MN33T2G?
A 150 μF OSCON capacitor with an ESR of 50 mΩ is recommended.
- How does the error flag function work on the NCV5661MN33T2G?
The error flag produces a logic Low when the output voltage drops below the nominal value and remains at logic High when the output voltage is above the nominal value.
- What is the ripple rejection of the NCV5661MN33T2G at 120 Hz?
The ripple rejection is greater than 70 dB at 120 Hz.
- What are the package options for the NCV5661MN33T2G?
The device is available in a 5-pin DPAK and a DFN 3x3.3 mm package.
