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Texas Instruments LP2992AIM5X-1.5
- Part No.:
- LP2992AIM5X-1.5
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2992AIM5X-1.5.pdf
- Description:
- IC REG LINEAR 1.5V 250MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,965
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Product details
Overview
LP2992AIM5X-1.5 from Texas Instruments is a fixed-output, micropower, ultra-low-dropout linear regulator in 5-pin SOT-23 (DBV) package, delivering up to 250mA output current with ±0.5% output accuracy (new chip), 30µVRMS output noise (with 10nF bypass capacitor), and 70dB PSRR at 1kHz. It serves as a post-regulator for low-noise power domains in battery-powered RF systems and precision analog subsystems.
For engineers reviewing the LP2992AIM5X-1.5 datasheet, LP2992AIM5X-1.5 pinout, LP2992AIM5X-1.5 application, or LP2992AIM5X-1.5 equivalent, key selection criteria include dropout voltage at 250mA (225mV max over temperature), stability with 2.2µF ceramic output capacitors, shutdown current (1.12µA typ), and compatibility with very low-ESR capacitors in space-constrained designs.
Technical Context
The LP2992AIM5X-1.5 employs a CMOS pass transistor architecture with internal bandgap reference and error amplifier, enabling ultra-low dropout operation down to 225mV at full 250mA load and –40°C to +125°C junction temperature. Its BYPASS pin connects to an external 10nF capacitor to reduce reference noise, directly enabling the 30µVRMS output noise specification.
It integrates active-high ON/OFF control with defined logic thresholds (0.72V low, 0.85V high), thermal shutdown, and foldback current limiting. The device achieves 70dB ripple rejection at 1kHz and 40dB at 1MHz-critical for suppressing switching noise from upstream DC/DC converters feeding sensitive RF or ADC circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.5V ±0.5% (new chip), ensuring stable core supply for 1.5V logic or low-voltage analog circuitry |
| Max output current | 250mA continuous, sufficient for powering microcontrollers, RF transceivers, or sensor signal chains |
| Dropout voltage | 225mV max at 250mA and –40°C to +125°C, enabling regulation from 1.725V input in worst-case conditions |
| Ground pin current | 875µA typ at 250mA load, supporting micropower system-level budgeting |
| Output noise | 30µVRMS (300Hz–50kHz, 10nF BYPASS), meeting low-noise requirements for ADC references or VCO supplies |
| PSRR | 70dB at 1kHz, 40dB at 1MHz, effectively attenuating switching ripple from buck converters |
| Input voltage range | 2.5V to 16V, compatible with single-cell Li-ion (with boost) or multi-cell battery and industrial 12V rails |
Pinout & Package
LP2992AIM5X-1.5 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 2.8mm, optimized for compact PCB layouts and thermal performance via GND pad connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input supply | Accepts 2.5V–16V input; requires ≥1µF ceramic capacitor to GND for stability and transient response |
| OUT (Pin 5) | Regulated output | Delivers fixed 1.5V; stable with ≥2.2µF ceramic capacitor to GND (ESR ≤1Ω) |
| GND (Pin 2) | Power ground | Common return path for IN, OUT, BYPASS, and ON/OFF; must be low-impedance plane |
| ON/OFF (Pin 3) | Enable control | Active-high logic input; >0.85V enables regulator, <0.72V disables with internal pulldown |
| BYPASS (Pin 4) | Noise reduction node | Connects to 10nF capacitor to GND to lower reference noise and achieve 30µVRMS output noise |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-noise regulation | 30µVRMS output noise with 10nF BYPASS capacitor enables clean supply for RF VCOs and precision ADCs |
| Micropower quiescent operation | 69µA IQ at zero load and 875µA at 250mA supports always-on battery-powered applications |
| Low-ESR capacitor compatibility | Stable with 2.2µF ceramic output capacitors (ESR ≤1Ω), eliminating need for bulk tantalum or electrolytic caps |
| High PSRR across frequency | 70dB at 1kHz and 40dB at 1MHz suppresses switching noise from upstream DC/DC converters |
| Thermal and current protection | Integrated thermal shutdown and foldback current limiting ensure robust operation under fault conditions |
Applications
| Active Antenna mMIMO Systems | Land Mobile Radios |
|---|---|
Use Scenario: Powering low-noise amplifiers (LNAs) and phase shifters in 5G base station active antenna arrays. IC Role / Device Role / Timing Role: Ultra-low-noise 1.5V post-regulator supplying bias to RF front-end components. Use Value: 30µVRMS noise and 70dB PSRR prevent phase noise degradation in VCOs and maintain EVM in mMIMO beamforming. | Use Scenario: Providing regulated 1.5V supply to digital baseband processors and audio codecs in portable two-way radios. IC Role / Device Role / Timing Role: Micropower LDO delivering stable core voltage during intermittent transmit bursts. Use Value: 875µA IQ at full load and 225mV dropout extend battery life while maintaining regulation during battery sag. |
| Cordless Power Tools | Motor Drives and Control Boards |
Use Scenario: Supplying 1.5V logic voltage to MCU-based motor controllers and Hall-effect sensor interfaces. IC Role / Device Role / Timing Role: Fixed-output LDO with enable control for sequenced power-up of tool electronics. Use Value: Active-high ON/OFF pin allows synchronized startup with main DC bus and reduces standby leakage to 1.12µA. | Use Scenario: Regulating 1.5V for gate drivers, current-sense amplifiers, and isolated communication ICs on industrial motor control PCBs. IC Role / Device Role / Timing Role: Low-dropout, high-PSRR regulator decoupling noisy power stages from precision analog blocks. Use Value: 2.5V–16V input range accommodates wide industrial input rails; 125°C operating junction temperature ensures reliability in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSS721AIDR | Fixed 1.5V output, ±2% accuracy, 150mA max, SOIC-8 package | Lower current capability and wider tolerance; suited for non-critical digital logic rails | Select when cost-sensitive, lower-current applications tolerate ±2% output variation and larger footprint is acceptable |
| TPS7A2015PDBVR | Fixed 1.5V output, ±1% accuracy, 300mA max, 5-pin SOT-23, 6.5µA IQ | Higher IQ efficiency and tighter accuracy, but no BYPASS pin for noise optimization | Select when ultra-low quiescent current dominates design priority and 30µVRMS noise is not required |
Compared with TSS721AIDR and TPS7A2015PDBVR, LP2992AIM5X-1.5 uniquely balances 250mA capability, ±0.5% accuracy, 30µVRMS noise (via BYPASS), and 5-pin SOT-23 size-making it optimal for RF and precision analog LDO applications where noise and accuracy are critical.
Availability
LP2992AIM5X-1.5 is available at Aetrix Electronics and suitable for active antenna mMIMO systems, land mobile radios, and cordless power tools requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for LP2992AIM5X-1.5 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with broad industrial, automotive, and communications product portfolios.
The LP2992 series belongs to TI's precision low-noise LDO regulator product line, designed specifically for noise-sensitive applications such as RF signal chains, high-resolution data acquisition, and battery-powered portable electronics requiring micropower operation and ultra-stable voltage regulation.
FAQ
What is the output voltage tolerance of LP2992AIM5X-1.5 over temperature and load?
The LP2992AIM5X-1.5 guarantees ±0.5% output voltage accuracy across 1mA–250mA load and –40°C to +125°C junction temperature. This tight tolerance ensures reliable operation for 1.5V-core microcontrollers and analog circuits without external trimming or calibration.
Does LP2992AIM5X-1.5 require an external bypass capacitor, and why?
Yes, LP2992AIM5X-1.5 requires a 10nF capacitor between the BYPASS pin and GND to achieve its specified 30µVRMS output noise. Without this capacitor, output noise increases significantly, compromising performance in RF and precision analog applications where low noise is mandatory.
What is the minimum input voltage needed for LP2992AIM5X-1.5 to maintain regulation at full load and high temperature?
At 250mA load and –40°C to +125°C, LP2992AIM5X-1.5 requires a minimum input voltage of 1.725V (1.5V + 225mV dropout). This ultra-low dropout enables operation from partially discharged batteries or tightly regulated intermediate rails.
Can LP2992AIM5X-1.5 be used with ceramic output capacitors smaller than 2.2µF?
No-TI specifies a minimum 2.2µF ceramic output capacitor (derated to ≥1µF effective value) for stability. Using smaller values risks oscillation or poor transient response. The device is optimized for 2.2µF–200µF ceramics with ESR ≤1Ω.
How does the ON/OFF pin function on LP2992AIM5X-1.5, and what are its voltage thresholds?
The ON/OFF pin on LP2992AIM5X-1.5 is active-high: output enables when voltage exceeds 0.85V (min) and disables when below 0.72V (max). At disable, internal pulldown actively discharges the output. If unused, tie ON/OFF to IN for always-on operation.
LP2992AIM5X-1.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.85V @ 250mA
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 95 µA
- Current - Supply (Max):
- 4 mA
- PSRR:
- 45dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LP2992AIM5X-1.5 FAQ
1.How can I place an order for LP2992AIM5X-1.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2992AIM5X-1.5 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LP2992AIM5X-1.5 reliable?
The price and inventory of LP2992AIM5X-1.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2992AIM5X-1.5 is usually 5 days.
3.What payment methods are accepted for LP2992AIM5X-1.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2992AIM5X-1.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2992AIM5X-1.5?
LP2992AIM5X-1.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2992AIM5X-1.5 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LP2992AIM5X-1.5?
For technical support, including LP2992AIM5X-1.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2992AIM5X-1.5 requirements.
6.How does Aetrix verify that LP2992AIM5X-1.5 is sourced from the original manufacturer or authorized distributors?
All LP2992AIM5X-1.5 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LP2992AIM5X-1.5 meets industry standards.
7.What is the process for return or replacement of LP2992AIM5X-1.5?
All LP2992AIM5X-1.5 units undergo pre-shipment inspection (PSI). If there is an issue with LP2992AIM5X-1.5, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LP2992AIM5X-1.5 part is unused and in its original packaging.
Return procedure for LP2992AIM5X-1.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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