National Semiconductor LP38691DT-1.8/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.72 | $4.72 |
| 15+ | $1.09 | $16.35 |
| 25+ | $1.06 | $26.50 |
| 50+ | $1.00 | $50.00 |
| 100+ | $0.89 | $89.00 |
| N+ | $0.18 | 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) | - |
| Current - Output | 500mA |
| 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 | TO-252-3, DPAK (2 Leads + Tab), SC-63 |
| Supplier Device Package | TO-252-3 |
| ROHS |  |
The LP38691DT-1.8/NOPB is a fixed 1.8V low dropout linear regulator capable of 500mA output. It features an ultra-low quiescent current of 55µA and 55dB PSRR at 120Hz, making it ideal for battery-powered and noise-sensitive applications. The TO-252-3 package offers a compact solution with good thermal characteristics.
- Low Quiescent Current: 55µA extends battery life in portable electronics.
- High Output Current: 500mA supports modern digital ICs.
- Excellent PSRR: 55dB at 120Hz filters supply noise.
- Fixed 1.8V Output: Simplifies design for low-voltage digital rails.
Digital Core Supply for MCUs
Provides stable 1.8V for microcontroller cores, with 500mA capacity for peripherals and memory.
FPGA Auxiliary Rail
Powers FPGA auxiliary circuits requiring 1.8V, ensuring low noise for high-speed logic.
Battery-Powered Wearables
Ultra-low 55µA quiescent current preserves battery life in fitness trackers and smartwatches.
Wireless Transceiver Power
Delivers clean 1.8V to RF transceivers, with 55dB PSRR minimizing interference from switching regulators.
Sensor Interface Circuits
Regulates 1.8V for MEMS sensors and signal conditioning, maintaining accuracy in measurement systems.
Portable Audio Players
Provides low-noise 1.8V for digital-to-analog converters, enhancing audio quality.
- 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 500mA.
- Q: What is the input voltage range?
- A: Input voltage should be above 2.25V for regulation, with absolute maximum of 10V.
- Q: What is the quiescent current?
- A: Quiescent current is only 55µA.
- Q: What is the PSRR?
- A: PSRR is 55dB at 120Hz.
- Q: What package is available?
- A: It comes in a TO-252-3 (DPAK) package.
LP38691DT-1.8/NOPB.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 500mA.
- Q: What is the input voltage range?
- A: Input voltage should be above 2.25V for regulation, with absolute maximum of 10V.
- Q: What is the quiescent current?
- A: Quiescent current is only 55µA.
- Q: What is the PSRR?
- A: PSRR is 55dB at 120Hz.
- Q: What package is available?
- A: It comes in a TO-252-3 (DPAK) package.
