Fairchild Semiconductor NCP5661MN28T2G
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.80 | $2.80 |
| 15+ | $0.64 | $9.60 |
| 25+ | $0.63 | $15.75 |
| 50+ | $0.60 | $30.00 |
| 100+ | $0.53 | $53.00 |
| N+ | $0.11 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Fairchild Semiconductor |
| Product Series | |
| Packaging | Bulk | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 9V |
| Voltage - Output (Min/Fixed) | 2.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1.3V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 3 mA |
| Current - Supply (Max) | - |
| PSRR | 70dB ~ 65dB (120Hz ~ 1kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 6-VDFN Exposed Pad |
| Supplier Device Package | 6-DFN (3x3) |
| ROHS |
The NCP5661MN28T2G is a fixed-output low dropout regulator providing 2.8V at up to 1A. It features excellent PSRR of 70dB at 120Hz, making it ideal for noise-sensitive analog and digital circuits. The 1.3V dropout at full load allows operation with moderate input margins. Packaged in a compact 6-DFN (3x3), it suits high-density PCB designs.
- High PSRR: 70dB at 120Hz rejects power line noise for clean output.
- 1A output current: Supports demanding digital loads like FPGAs and DSPs.
- Compact DFN package: 3x3mm footprint for space-constrained designs.
- Low quiescent current: 3 mA balances efficiency and performance.
FPGA Core Power
Provides a stable 2.8V rail for FPGA core logic with 1A capacity and high PSRR for reliable operation.
DSP Processors
Powers digital signal processors requiring 2.8V with low noise for audio/video processing.
High-Speed ADCs
Delivers clean 2.8V supply to analog-to-digital converters, with 70dB PSRR at 120Hz rejecting mains hum.
Optical Transceivers
Regulates 2.8V for laser drivers and TIA circuits in fiber-optic communication modules.
Medical Devices
Provides reliable 2.8V power for portable medical monitors and diagnostic equipment.
Server Motherboards
Powers memory controllers and I/O interfaces requiring 2.8V with high current capability.
- Q: What is the output voltage of the NCP5661MN28T2G?
- A: The fixed output voltage is 2.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.3V at 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is 3 mA.
- Q: What is the PSRR performance?
- A: PSRR is 70dB at 120Hz and 65dB at 1kHz.
- Q: What is the output voltage of the NCP5661MN28T2G?
- A: The fixed output voltage is 2.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.3V at 1A load.
- Q: What is the quiescent current?
- A: The quiescent current is 3 mA.
- Q: What is the PSRR performance?
- A: PSRR is 70dB at 120Hz and 65dB at 1kHz.

NCP5661MN28T2G.pdf