Overview
The NCV5661MN12T2G is a high-performance, low dropout linear regulator designed by onsemi. This device is part of the NCP5661/NCV5661 series, which is suitable for high power applications requiring up to 1.0 A of current. It is available in both fixed and adjustable output versions, with the NCV5661MN12T2G specifically offering a fixed output voltage of 1.2 V. The regulator features ultra-fast transient response times, low noise, and additional functionalities such as Enable and Error Flag, enhancing its utility in various 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, Disabled State) | Iq, Iqds | 1.3, 10 | 3.0, 300 | mA, μA | |
| Enable Input Threshold Voltage | Ven | 1.3 | 0.3 | V | |
| Error Flag Output Low Voltage Saturation (Ief = 1.0 mA) | Vefdo | 200 | mV |
Key Features
- Ultra-Fast Transient Response: Settling time of 1-3 μs, ensuring quick response to load transients.
- Low Noise: 26 μVrms output noise without a bypass capacitor.
- Enable Functionality: Allows for on/off control of the regulator.
- Error Flag (Fixed Output Version): Provides a logic Low signal when the output voltage drops below the nominal value.
- Thermal Robustness: Available in 5-pin DPAK and DFN 3x3.3 mm packages, ensuring good thermal performance.
- Low Ground Current: Independent of load current, reducing power consumption.
- Internal Current Limitation: Limits peak output current to 1.5 A to prevent excessive power dissipation.
- Ripple Rejection: High ripple rejection of 70 dB at 120 Hz and 65 dB at 1.0 kHz.
Applications
The NCV5661MN12T2G is suitable for various high-power applications, including:
- Server power supplies
- ASIC power supplies
- Networking equipment
- Other high-current linear regulator needs
Its ultra-fast transient response, low noise, and robust thermal design make it an attractive solution for demanding power supply requirements.
Q & A
- What is the maximum output current of the NCV5661MN12T2G?
The maximum output current is 1.0 A.
- What are the available package types for the NCV5661MN12T2G?
The device is available in 5-pin DPAK and DFN 3x3.3 mm packages.
- What is the typical output noise voltage of the NCV5661MN12T2G?
The typical output noise voltage is 26 μVrms.
- Does the NCV5661MN12T2G have an Enable function?
Yes, it has an Enable function that allows for on/off control of the regulator.
- What is the purpose of the Error Flag in the fixed output version?
The Error Flag produces a logic Low signal when the output voltage drops below the nominal value.
- What is the recommended input capacitor for the NCV5661MN12T2G?
A 150 μF OSCON capacitor with an ESR of 50 mΩ is recommended.
- What is the thermal shutdown temperature of the NCV5661MN12T2G?
The thermal shutdown temperature is 160°C.
- How does the internal current limitation work in the NCV5661MN12T2G?
The device limits the peak output current to 1.5 A to prevent excessive power dissipation.
- What is the ripple rejection of the NCV5661MN12T2G at 120 Hz?
The ripple rejection at 120 Hz is 70 dB.
- What are some typical applications of the NCV5661MN12T2G?
Typical applications include server power supplies, ASIC power supplies, and networking equipment.
