National Semiconductor LP38691DTX-1.8/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $3.36 | $3.36 |
| 15+ | $0.77 | $11.55 |
| 25+ | $0.76 | $19.00 |
| 50+ | $0.71 | $35.50 |
| 100+ | $0.63 | $63.00 |
| N+ | $0.13 | 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 LP38691DTX-1.8/NOPB is a low-dropout linear regulator providing a fixed 1.8V output with a 500mA current capability. Featuring a low 55µA quiescent current and 55dB PSRR at 120Hz, it delivers clean, stable power for noise-sensitive applications. The TO-252-3 package ensures excellent thermal performance for continuous operation in demanding environments.
- High Current Capacity: 500mA output supports a wide range of digital ICs and modules.
- Low Power Consumption: 55µA quiescent current enhances battery life in portable devices.
- Good Ripple Rejection: 55dB PSRR at 120Hz ensures clean output for sensitive analog and RF circuits.
- Robust Thermal Package: TO-252-3 package dissipates heat effectively for reliable high-current operation.
FPGA and DSP Core Supplies
The LP38691DTX-1.8/NOPB provides a stable 1.8V rail at up to 500mA, making it suitable for powering the core logic of FPGAs and DSPs in embedded systems where low voltage and high current are required.
Wireless Communication Modules
With 55dB PSRR at 120Hz, this regulator effectively filters noise from switching power supplies, ensuring clean 1.8V power for RF transceivers and baseband processors in IoT modules.
Battery-Powered Handheld Instruments
The 55µA quiescent current helps extend battery life in portable multimeters and handheld test equipment that require a regulated 1.8V supply for digital logic.
Networking Equipment
In routers and switches, the TO-252-3 package allows for efficient heat dissipation while providing a reliable 1.8V rail for high-speed Ethernet PHY and switch ICs.
Automotive Infotainment Systems
The wide input range and robust TO-252-3 package make it suitable for automotive infotainment systems that need a stable 1.8V supply for audio DSPs and display controllers.
- Q: What is the output voltage of the LP38691DTX-1.8/NOPB?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 500mA of output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.7V to 10V.
- Q: What is the quiescent current?
- A: The quiescent current is typically 55µA.
- Q: What is the PSRR performance?
- A: The PSRR is 55dB at 120Hz, providing good ripple rejection.
- Q: What package is available?
- A: It is available in a TO-252-3 (DPAK) package.
LP38691DTX-1.8/NOPB.pdf
- Q: What is the output voltage of the LP38691DTX-1.8/NOPB?
- A: The fixed output voltage is 1.8V.
- Q: What is the maximum output current?
- A: It can deliver up to 500mA of output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.7V to 10V.
- Q: What is the quiescent current?
- A: The quiescent current is typically 55µA.
- Q: What is the PSRR performance?
- A: The PSRR is 55dB at 120Hz, providing good ripple rejection.
- Q: What package is available?
- A: It is available in a TO-252-3 (DPAK) package.
