Fairchild Semiconductor FAN2558MP18X
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.76 | $1.76 |
| 15+ | $0.40 | $6.00 |
| 25+ | $0.40 | $10.00 |
| 50+ | $0.37 | $18.50 |
| 100+ | $0.33 | $33.00 |
| N+ | $0.07 | 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) | 5.5V |
| Voltage - Output (Min/Fixed) | 1.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | - |
| Current - Output | 180mA |
| Current - Quiescent (Iq) | 150 µA |
| Current - Supply (Max) | - |
| PSRR | 50dB (100kHz) |
| Control Features | Enable, Power Good |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 85°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 6-VDFN Exposed Pad |
| Supplier Device Package | 6-DFN (2x2) |
| ROHS |
The FAN2558MP18X from Fairchild Semiconductor is a fixed 1.8V low dropout linear regulator delivering up to 180mA. Its ultra-low 150 µA quiescent current and 50dB PSRR at 100kHz make it ideal for battery-powered and noise-sensitive applications. Housed in a compact 6-DFN (2x2) package, it offers a space-saving solution for portable electronics.
- Extended Battery Life: 150 µA quiescent current minimizes standby drain in portable devices.
- High-Frequency Noise Rejection: 50dB PSRR at 100kHz ensures clean power for RF and analog circuits.
- Compact Footprint: 6-DFN (2x2) package saves PCB space for miniaturized designs.
- Stable Fixed Output: 1.8V rail ideal for low-voltage digital cores and I/O.
Portable Battery-Powered Devices
The low 150 µA quiescent current extends battery life in wearables, IoT sensors, and handheld instruments where standby power is critical.
Noise-Sensitive Analog Circuits
With 50dB PSRR at 100kHz, this LDO effectively filters high-frequency switching noise, making it suitable for powering precision ADC/DAC references and RF stages.
Compact PCB Designs
The 6-DFN (2x2) package minimizes board footprint, enabling dense layouts in space-constrained products like earbuds and smart cards.
Microcontroller Core Supply
The 1.8V fixed output matches modern MCU I/O and core voltages, providing a clean, stable rail for digital logic.
Low-Power Wireless Modules
Stable 1.8V output with low dropout supports BLE and Zigbee modules, ensuring reliable operation near battery end-of-life.
- Q: What is the output voltage of the FAN2558MP18X?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 180mA.
- 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: Dropout voltage is not specified in the provided data; refer to the datasheet.
- Q: What is the quiescent current?
- A: The quiescent current is 150 µA.
- Q: What package is available?
- A: It comes in a 6-DFN (2x2) package.
- Q: What is the output voltage of the FAN2558MP18X?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 180mA.
- 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: Dropout voltage is not specified in the provided data; refer to the datasheet.
- Q: What is the quiescent current?
- A: The quiescent current is 150 µA.
- Q: What package is available?
- A: It comes in a 6-DFN (2x2) package.

FAN2558MP18X.pdf