National Semiconductor LP3874EMP-3.3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $9.44 | $9.44 |
| 15+ | $2.17 | $32.55 |
| 25+ | $2.12 | $53.00 |
| 50+ | $2.01 | $100.50 |
| 100+ | $1.77 | $177.00 |
| N+ | $0.35 | 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) | 7V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.35V @ 800mA |
| Current - Output | 800mA |
| Current - Quiescent (Iq) | 9 mA |
| Current - Supply (Max) | 15 mA |
| PSRR | 73dB ~ 57dB (120Hz) |
| 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 | TO-261-5, TO-261AB |
| Supplier Device Package | SOT-223-5 |
| ROHS |  |
The LP3874EMP-3.3 is a high-performance low-dropout regulator from National Semiconductor, providing a fixed 3.3V output at up to 800mA. With a typical dropout of 350mV and excellent PSRR (73dB at 120Hz), it ensures clean, stable power for noise-sensitive applications. The compact SOT-223-5 package is ideal for space-constrained designs in consumer, automotive, and industrial electronics.
- High PSRR: 73dB at 120Hz filters AC ripple, ideal for audio and RF circuits.
- Low Dropout: 350mV at 800mA maximizes efficiency in battery-powered designs.
- Compact Package: SOT-223-5 saves board space while providing adequate thermal performance.
- Stable 3.3V Rail: Fixed output ensures compatibility with standard logic and mixed-signal ICs.
Portable Consumer Electronics
The 800mA output and 350mV dropout make it ideal for powering application processors, memory, and peripherals in smartphones and tablets from a 3.7V Li-ion battery.
FPGA and CPLD Core Supplies
For low-power FPGAs requiring 3.3V I/O or core voltage, this LDO provides clean, stable power with 73dB PSRR at 120Hz, reducing logic errors.
Wireless Communication Modules
In Wi-Fi or cellular modules, the LP3874EMP-3.3 ensures a noise-free 3.3V rail for RF transceivers, improving signal-to-noise ratio.
Automotive Body Electronics
With a SOT-223 package, it fits in compact ECU modules, providing 3.3V for sensors, CAN transceivers, and microcontrollers in harsh environments.
Industrial Sensor Interfaces
For 4-20mA loop-powered sensors, this regulator offers a stable 3.3V supply for signal conditioning circuits, ensuring accurate measurements.
Set-Top Boxes and Media Players
Delivering 800mA, it powers audio codecs, HDMI interfaces, and control logic, with the low dropout allowing operation from a 5V standby rail.
- Q: What is the output voltage of the LP3874EMP-3.3?
- A: It provides a fixed 3.3V output.
- Q: What is the maximum output current?
- A: The LP3874EMP-3.3 can deliver up to 800mA.
- Q: What is the input voltage range?
- A: The input voltage range is from 3.3V up to 7V (absolute maximum).
- Q: What is the dropout voltage?
- A: The typical dropout voltage is 350mV at 800mA load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 9mA.
- Q: What package is available?
- A: It is available in a SOT-223-5 package.
LP3874EMP-3.3.pdf
- Q: What is the output voltage of the LP3874EMP-3.3?
- A: It provides a fixed 3.3V output.
- Q: What is the maximum output current?
- A: The LP3874EMP-3.3 can deliver up to 800mA.
- Q: What is the input voltage range?
- A: The input voltage range is from 3.3V up to 7V (absolute maximum).
- Q: What is the dropout voltage?
- A: The typical dropout voltage is 350mV at 800mA load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 9mA.
- Q: What package is available?
- A: It is available in a SOT-223-5 package.
