Texas Instruments LP3855EMPX-ADJ/NOPB
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $5.28 | $5.28 |
| 15+ | $1.21 | $18.15 |
| 25+ | $1.19 | $29.75 |
| 50+ | $1.12 | $56.00 |
| 100+ | $0.99 | $99.00 |
| N+ | $0.20 | Price Inquiry |
Request Quote / Inquiry
| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Active |
| Output Type | Positive |
| Number of Regulators | Adjustable |
| Voltage - Input (Max) | 7V |
| Voltage - Output (Min/Fixed) | 1.23V |
| Voltage - Output (Max) | 6.6V |
| Voltage Dropout (Max) | 0.435V @ 1.5A |
| Current - Output | 1.5A |
| Current - Quiescent (Iq) | 3 mA |
| Current - Supply (Max) | 10 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 Texas Instruments LP3855EMPX-ADJ is an adjustable low dropout linear regulator capable of delivering 1.5A with a dropout voltage of only 0.435V. The output can be set from 1.23V to 6.6V using external resistors, offering design flexibility. With a quiescent current of 3mA and 73dB PSRR, it ensures clean power in a SOT-223-5 package.
- Adjustable Output: Set any voltage from 1.23V to 6.6V, providing design flexibility for various loads.
- High Current: 1.5A output supports a wide range of digital and analog circuits.
- Low Dropout: 0.435V dropout maximizes headroom in low-voltage systems.
- High PSRR: 73dB at 120Hz rejects power supply noise, ideal for sensitive applications.
Adjustable Core Voltage for Processors
Many microprocessors and SoCs require a specific core voltage between 1.23V and 6.6V. The LP3855's adjustable output allows precise setting via a resistor divider to match the exact requirement.
Variable Power Supply for Test Equipment
In bench instruments and ATE, the adjustable output enables flexible voltage generation for DUT testing, with 1.5A capability for power-hungry components.
Battery-Powered Devices with Multiple Rails
Use the LP3855 to generate a custom voltage rail from a battery, optimizing power for different operating modes (e.g., 3.3V for logic, 5V for analog).
Post-Regulation for Noise-Sensitive Analog
With 73dB PSRR at 120Hz, this LDO is ideal for cleaning up noisy switching regulator outputs before feeding precision ADCs or op-amps.
Automotive Infotainment Systems
The adjustable output allows tailoring supply voltages for different display and audio ICs, while the low dropout ensures stable operation during cranking conditions.
Industrial Control Modules
For PLCs and motor controllers, the LP3855 provides a stable, adjustable rail for logic and sensor interfaces, reducing design complexity.
- Q: What is the output voltage range of the LP3855EMPX-ADJ?
- A: The adjustable version allows output voltages from 1.23V up to 6.6V, set by external resistors.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.23V up to 7V (absolute maximum). The input must be at least the output voltage plus dropout.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.435V at a 1.5A load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 3 mA.
- Q: What package is available?
- A: The LP3855EMPX-ADJ is available in a SOT-223-5 package.
LP3855EMPX-ADJ/NOPB.pdf
- Q: What is the output voltage range of the LP3855EMPX-ADJ?
- A: The adjustable version allows output voltages from 1.23V up to 6.6V, set by external resistors.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of continuous output current.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.23V up to 7V (absolute maximum). The input must be at least the output voltage plus dropout.
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 0.435V at a 1.5A load.
- Q: What is the quiescent current?
- A: The quiescent current is typically 3 mA.
- Q: What package is available?
- A: The LP3855EMPX-ADJ is available in a SOT-223-5 package.
