National Semiconductor LP2989ILD-4.0
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.76 | $2.76 |
| 15+ | $0.63 | $9.45 |
| 25+ | $0.62 | $15.50 |
| 50+ | $0.59 | $29.50 |
| 100+ | $0.52 | $52.00 |
| N+ | $0.10 | Price Inquiry |
Request Quote / Inquiry
| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | |
| Packaging | Bulk | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 16V |
| Voltage - Output (Min/Fixed) | 4V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.65V @ 500mA |
| Current - Output | 500mA |
| Current - Quiescent (Iq) | 175 µA |
| Current - Supply (Max) | 9 mA |
| PSRR | 60dB (1kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 8-WDFN Exposed Pad |
| Supplier Device Package | 8-WSON (4x4) |
The LP2989ILD-4.0 is a robust low-dropout linear regulator from National Semiconductor, delivering a fixed 4.0V output with up to 500mA of current. It features a low quiescent current of 175µA and a dropout voltage of just 0.65V at full load, making it efficient for battery-powered and industrial applications. With 60dB PSRR at 1kHz, it provides clean, stable power for noise-sensitive circuits. The 8-WSON package ensures excellent thermal dissipation, supporting higher current loads in demanding environments.
- High Output Current: Capable of sourcing 500mA, making it suitable for powering multiple components or higher-power loads.
- Excellent Thermal Performance: The 8-WSON (4x4) package efficiently dissipates heat, ensuring reliability under continuous load.
- Low Quiescent Current: At 175µA, it balances power efficiency with high-performance operation, extending battery life.
- Stable 4.0V Rail: Provides a precise output voltage, critical for analog and mixed-signal circuits requiring consistent power.
Industrial Sensor Interfaces
The 500mA output current is sufficient to power multiple industrial sensors and their signal conditioning circuits, while the 60dB PSRR at 1kHz ensures clean power for accurate measurements.
Automotive Infotainment
With a stable 4.0V output and robust thermal package (8-WSON), this LDO is suitable for powering display drivers and audio processors in car infotainment systems.
Networking Equipment
For routers and switches, the LP2989ILD-4.0 provides a reliable 4.0V rail for PHY transceivers, with the 500mA capacity handling peak data transmission currents.
Portable Test Instruments
Its combination of moderate quiescent current and high output current makes it ideal for handheld multimeters and oscilloscopes that require both accuracy and battery efficiency.
FPGA Auxiliary Power
FPGAs often need a 4.0V auxiliary rail. This regulator delivers the necessary current with low noise, ensuring stable operation of configuration logic.
Medical Diagnostic Devices
The high PSRR and stable output make it suitable for powering sensitive analog front-ends in portable diagnostic equipment, ensuring reliable readings.
- Q: What is the output voltage of the LP2989ILD-4.0?
- A: This LDO provides a fixed 4.0V output, ideal for powering 4V logic and analog circuits.
- Q: What is the maximum output current?
- A: The LP2989ILD-4.0 can deliver up to 500mA of output current.
- Q: What is the input voltage range?
- A: The device operates with an input voltage of 4V or higher, with a dropout of 0.65V at full load.
- Q: What is the quiescent current?
- A: The quiescent current is 175µA, balancing low power consumption with high performance.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.65V at 500mA, allowing efficient operation with moderate headroom.
- Q: What package is available?
- A: It comes in an 8-WSON (4x4) package, providing excellent thermal performance for higher current loads.
LP2989ILD-4.0.pdf
- Q: What is the output voltage of the LP2989ILD-4.0?
- A: This LDO provides a fixed 4.0V output, ideal for powering 4V logic and analog circuits.
- Q: What is the maximum output current?
- A: The LP2989ILD-4.0 can deliver up to 500mA of output current.
- Q: What is the input voltage range?
- A: The device operates with an input voltage of 4V or higher, with a dropout of 0.65V at full load.
- Q: What is the quiescent current?
- A: The quiescent current is 175µA, balancing low power consumption with high performance.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.65V at 500mA, allowing efficient operation with moderate headroom.
- Q: What package is available?
- A: It comes in an 8-WSON (4x4) package, providing excellent thermal performance for higher current loads.
