LP5900TL-2.5 Texas Instruments In Stock
LP5900TL-2.5 is a 150mA ultra-low noise LDO linear regulator by Texas Instruments, offering 2.5V fixed output voltage with only 20μA quiescent current. Key specs: 2.5V output, 150mA max current, 30μVRMS noise, PSRR 65dB typical. Available in compact SOT-23-5 package, ideal for noise-sensitive portable and RF applications.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low noise: 30μVRMS output noise for clean power in sensitive analog/RF circuits
- Low quiescent current: 20μA Iq extends battery life in portable designs
- Fixed 2.5V output with tight ±2% initial accuracy
- High PSRR: 65dB at 1kHz rejects supply ripple effectively
- Compact SOT-23-5 package minimizes PCB footprint
Applications
The LP5900TL-2.5 is well suited for noise-sensitive applications such as RF transceivers, wireless modules, and precision analog front-ends where supply noise directly impacts signal integrity. Its ultra-low quiescent current makes it ideal for battery-powered devices including wearables, IoT sensors, and portable medical equipment. It is also commonly used to provide a clean 2.5V reference rail in mixed-signal systems alongside ADCs, DACs, and audio codecs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage and maximum current of the LP5900TL-2.5?
The LP5900TL-2.5 provides a fixed 2.5V output voltage with a maximum output current of 150mA. The output accuracy is ±2% over the full operating temperature range, making it suitable for precision power supply requirements.
What makes the LP5900TL-2.5 suitable for RF and analog applications?
The LP5900TL-2.5 features an ultra-low output noise of only 30μVRMS and a high power supply rejection ratio (PSRR) of 65dB at 1kHz. These characteristics prevent supply-induced interference in sensitive RF front-ends, VCOs, PLLs, ADCs, and audio circuits.
What is the quiescent current of the LP5900TL-2.5 and why does it matter?
The LP5900TL-2.5 has a quiescent current of only 20μA, which is the current drawn from the supply when no load is connected. This low Iq is critical for battery-powered devices such as IoT nodes and wearables, where standby power consumption directly affects battery runtime.
What package does the LP5900TL-2.5 come in?
The LP5900TL-2.5 is available in a SOT-23-5 (5-pin small outline transistor) package. This compact surface-mount package is ideal for space-constrained designs and is compatible with standard reflow soldering processes.
What are common alternatives to the LP5900TL-2.5?
Common alternatives include the TI LP2985-2.5 (150mA LDO, SOT-23-5), LP2992-2.5 (250mA, ultra-low noise), and Microchip MCP1700T-2502E (low quiescent current LDO). When selecting an alternative, verify output voltage accuracy, noise spec, input voltage range, and package compatibility.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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