National Semiconductor LP38690SD-1.8
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.40 | $4.40 |
| 15+ | $1.01 | $15.15 |
| 25+ | $0.99 | $24.75 |
| 50+ | $0.94 | $47.00 |
| 100+ | $0.83 | $83.00 |
| N+ | $0.17 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | |
| Packaging | Bulk | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 10V |
| Voltage - Output (Min/Fixed) | 1.8V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 1.6V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 55 µA |
| Current - Supply (Max) | 100 µA |
| PSRR | 55dB (120Hz) |
| Control Features | - |
| Protection Features | Over Temperature |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 6-WDFN Exposed Pad |
| Supplier Device Package | 6-WSON (3x3) |
| ROHS |  |
The National Semiconductor LP38690SD-1.8 is a fixed 1.8V low dropout regulator capable of 1A output. Packaged in a compact 6-WSON (3x3), it features an ultra-low quiescent current of 55µA and a dropout voltage of 1.6V at full load. This makes it an excellent choice for battery-powered and low-voltage digital applications.
- Ultra-Low Quiescent Current: 55µA extends battery life in portable devices.
- Compact 6-WSON Package: 3x3mm footprint ideal for miniaturized PCBs.
- 1A Output Capability: Sufficient for modern low-voltage processors and peripherals.
- Stable 1.8V Rail: Ensures reliable operation of 1.8V logic and memory.
Low-Voltage Digital Logic
For 1.8V logic families and I/O banks, this LDO provides a stable 1A supply with minimal power loss.
FPGA Auxiliary Rails
Many FPGAs require a 1.8V auxiliary supply; the LP38690SD-1.8 delivers clean power with low quiescent current.
Battery-Powered Wearables
The 55µA quiescent current and small 6-WSON package make it ideal for smartwatches and fitness trackers.
DDR Memory Termination
It can supply the 1.8V VDDQ rail for DDR3/DDR4 memory modules with adequate current.
Portable Audio Players
Low noise and stable 1.8V output benefit audio codecs and headphone amplifiers.
IoT Edge Devices
For always-on sensors and wireless modules, this regulator ensures efficient power conversion from a 3.7V Li-ion battery.
- Q: What is the output voltage?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A.
- Q: What is the input voltage range?
- A: Input voltage must be above 3.4V; typically up to 10V.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.6V at 1A.
- Q: What is the quiescent current?
- A: The quiescent current is only 55µA.
- Q: What package is available?
- A: It comes in a 6-WSON (3x3) package.
LP38690SD-1.8.pdf
- Q: What is the output voltage?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A.
- Q: What is the input voltage range?
- A: Input voltage must be above 3.4V; typically up to 10V.
- Q: What is the dropout voltage?
- A: The dropout voltage is 1.6V at 1A.
- Q: What is the quiescent current?
- A: The quiescent current is only 55µA.
- Q: What package is available?
- A: It comes in a 6-WSON (3x3) package.
