LP3982IMM-2.5 Texas Instruments In Stock
LP3982IMM-2.5 is a 150mA ultra-low-noise LDO linear regulator with 2.5V fixed output by Texas Instruments. Key specs: 30µV RMS output noise, 50dB PSRR at 10kHz, SOT-23-5 package. From $0.27, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.2720(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LP3982IMM-2.5?
- Ultra-low output noise of 30µV RMS for noise-sensitive RF and analog circuits
- 150mA output current with only 300mV dropout voltage at full load
- High PSRR of 50dB at 10kHz for excellent power supply rejection
- Fixed 2.5V output in compact SOT-23-5 package for space-constrained designs
- Stable with 1µF ceramic output capacitor for simplified BOM
What is LP3982IMM-2.5 used for?
The LP3982IMM-2.5 is well suited for portable battery-powered devices such as smartphones, tablets, and wearables where low noise and high efficiency are critical. Its ultra-low noise output makes it ideal for powering RF transceivers, PLLs, ADCs, and other noise-sensitive analog components. It is also commonly used in post-regulation stages for DC-DC converters in industrial and communications equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for LP3982IMM-2.5?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage and maximum output current of the LP3982IMM-2.5?
The LP3982IMM-2.5 provides a fixed 2.5V output voltage and can supply up to 150mA of output current. The dropout voltage is approximately 300mV at full load, making it suitable for low-voltage applications powered from 2.8V or higher input supplies.
What makes the LP3982IMM-2.5 suitable for noise-sensitive applications?
The LP3982IMM-2.5 features an ultra-low output noise specification of only 30µV RMS over a 10Hz to 100kHz bandwidth, combined with a power supply rejection ratio (PSRR) of 50dB at 10kHz. These characteristics make it ideal for powering RF front-ends, PLLs, voltage-controlled oscillators, and precision ADCs where power supply noise can degrade performance.
What package does the LP3982IMM-2.5 come in and what capacitor is required?
The LP3982IMM-2.5 is available in the compact SOT-23-5 (5-pin) surface-mount package, measuring approximately 1.6mm x 2.9mm. It is stable with a minimum 1µF ceramic output capacitor, which simplifies PCB design and reduces BOM cost compared to regulators requiring larger tantalum capacitors.
Can the LP3982IMM-2.5 be used in battery-powered portable devices?
Yes, the LP3982IMM-2.5 is an excellent choice for portable battery-powered devices. Its low quiescent current helps extend battery life, while the low dropout voltage of 300mV at 150mA allows the regulator to continue operating even as the battery discharges close to 2.8V. It is widely used in smartphones, GPS receivers, and wearable electronics.
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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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