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Texas Instruments LP2992IM5-5.0
- Part No.:
- LP2992IM5-5.0
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2992IM5-5.0.pdf
- Description:
- IC REG LINEAR 5V 250MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,124
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Product details
Overview
LP2992IM5-5.0 from Texas Instruments is a fixed-output, micropower, ultra-low-dropout linear regulator in SOT-23-5 (DBV) package, delivering up to 250mA with ±0.5% output accuracy (new chip), 30µVRMS output noise (with 10nF bypass capacitor), and 70dB PSRR at 1kHz. It operates across 2.5V–16V input and supports stable regulation with 2.2µF ceramic output capacitors - ideal for powering noise-sensitive low-voltage MCUs in motor control and wireless infrastructure.
For engineers reviewing the LP2992IM5-5.0 datasheet, LP2992IM5-5.0 pinout, LP2992IM5-5.0 application, or LP2992IM5-5.0 equivalent, key selection criteria include dropout voltage at 250mA (225mV max over temperature), shutdown current (1.12µA typ), thermal performance (RθJA = 178.6°C/W), and compatibility with low-ESR ceramic capacitors without external compensation.
Technical Context
The LP2992IM5-5.0 uses a CMOS pass transistor architecture with internal bandgap reference (1.2V), enabling ultra-low dropout and micropower operation. Its BYPASS pin connects to an external 10nF capacitor to reduce reference noise, directly lowering integrated output noise to 30µVRMS over 300Hz–50kHz.
It integrates active-high enable (ON/OFF), thermal shutdown, current limiting (300–350mA peak), and internal output pulldown during disable. Soft-start minimizes inrush current, and stability is guaranteed with ≥2.2µF ceramic COUT and ≥1µF CIN - no ESR requirements beyond 1Ω maximum for new-chip variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±0.5% (new chip, over load and temperature) |
| Max Output Current | 250mA continuous - sufficient for mid-power MCUs and RF bias rails |
| Dropout Voltage | 225mV max at 250mA and –40°C to +125°C - enables operation with VIN as low as 5.225V |
| Ground Pin Current | 875µA typ at 250mA load - enables high efficiency at full load |
| PSRR | 70dB at 1kHz, 40dB at 1MHz - suppresses switching noise from upstream DC/DC converters |
| Output Noise | 30µVRMS (300Hz–50kHz, with 10nF BYPASS cap) - meets low-noise analog supply requirements |
| Input Voltage Range | 2.5V to 16V - supports wide-input industrial and battery-backed systems |
Pinout & Package
LP2992IM5-5.0 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 2.8mm, with exposed pad not present (SOT-23-5, not WSON). Thermal performance is characterized with RθJA = 178.6°C/W on standard JEDEC 2s2p board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input supply | Accepts 2.5V–16V; requires ≥1µF ceramic decoupling to GND |
| OUT (Pin 5) | Regulated output | Delivers fixed 5.0V; requires ≥2.2µF ceramic capacitor to GND for stability |
| GND (Pin 2) | Power ground | Common return for IN, OUT, BYPASS, and ON/OFF; must be low-impedance |
| ON/OFF (Pin 3) | Enable control | Active-high logic: >0.85V enables regulator; <0.15V 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 enabled by dedicated BYPASS pin and 10nF capacitor |
| Micropower quiescent operation | 69µA IQ at zero load and 875µA at 250mA - extends battery life in always-on systems |
| Stable with small ceramic capacitors | Guaranteed stability with ≥2.2µF X7R/X5R MLCC output caps - eliminates need for tantalum or electrolytic |
| High PSRR across frequency | 70dB @ 1kHz and 40dB @ 1MHz - effectively filters ripple from switch-mode power supplies |
| Robust protection suite | Integrated thermal shutdown, current limiting (300–350mA), and output pulldown during disable |
Applications
| Motor Drive Power Supply | Active Antenna mMIMO Bias Rail |
|---|---|
Use Scenario: Powers microcontrollers and gate drivers in cordless power tools and industrial motor control boards where input voltage varies widely (e.g., 7.2V–14.4V Li-ion packs). IC Role / Device Role / Timing Role: Low-noise 5.0V LDO providing clean VDD for MCU cores and analog comparators. Use Value: Ultra-low dropout (225mV max) ensures regulation down to 5.225V input, extending runtime; 30µVRMS noise prevents ADC quantization errors. | Use Scenario: Supplies bias voltage to GaN FET drivers and phase shifters in 5G active antenna units requiring stable, low-noise 5V rails. IC Role / Device Role / Timing Role: Fixed 5.0V post-regulator filtering switching converter ripple before sensitive RF components. Use Value: 70dB PSRR at 1kHz attenuates DC/DC switching artifacts; 2.2µF ceramic compatibility simplifies layout in space-constrained mmWave modules. |
| Land Mobile Radio Audio Stage | Smart Appliance Control Board |
Use Scenario: Powers audio codecs and DSPs in ruggedized land mobile radios operating across –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Primary 5.0V analog supply for low-distortion audio signal chain. Use Value: ±0.5% output accuracy over temperature ensures consistent gain calibration; 125°C junction rating supports sealed enclosure operation. | Use Scenario: Supplies main controller and sensor interface in washing machine control boards exposed to humidity and thermal cycling. IC Role / Device Role / Timing Role: Main 5.0V rail for MCU, display driver, and communication ICs (e.g., UART, I²C peripherals). Use Value: Shutdown current of 1.12µA enables ultra-low standby power; SOT-23-5 footprint allows compact, cost-effective PCB design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSS721AIDR | 5.0V fixed, 250mA, ±2% accuracy, higher IQ (120µA min), no BYPASS pin, 65dB PSRR @ 1kHz | Lacks low-noise BYPASS path; unsuitable for sub-50µVRMS analog rails | Select when noise is non-critical and footprint compatibility with SOIC-8 is required |
| MCP1700T-5002E/TT | 5.0V fixed, 250mA, ±0.4% accuracy, 1.6µA IQ, no enable or BYPASS, 1.6V–6.0V VIN range | Narrower input range; no ON/OFF control or noise-reduction capability | Prefer for ultra-low-power battery applications where enable and noise performance are unnecessary |
Compared with TSS721AIDR and MCP1700T-5002E/TT, LP2992IM5-5.0 uniquely delivers 30µVRMS noise via BYPASS pin, 70dB PSRR, and active enable - making it the only option among the three qualified for noise-sensitive RF and precision analog subsystems requiring 5.0V regulation.
Availability
LP2992IM5-5.0 is available at Aetrix Electronics and suitable for motor drives, active antenna systems, land mobile radios, and smart appliance control boards requiring stable component supply, long-term manufacturability, and automotive-grade thermal reliability.
Supply support for LP2992IM5-5.0 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 specializing in analog, embedded processing, and power management ICs, with leadership in high-reliability industrial and automotive solutions.
The LP2992 product line delivers micropower, low-noise, ultra-low-dropout regulators for noise-sensitive applications including RF front-ends, precision sensors, and battery-powered microcontrollers - emphasizing stability with ceramic capacitors and wide-input operation.
FAQ
What is the minimum input voltage required for LP2992IM5-5.0 to maintain 5.0V regulation at full 250mA load and 125°C?
The LP2992IM5-5.0 requires a minimum input voltage of 5.35V under those conditions. This derives from its maximum dropout voltage of 340mV at 250mA and –40°C to +125°C (per Electrical Characteristics table), ensuring regulation remains within ±0.5% tolerance. At room temperature, dropout is lower - typically 225mV - allowing operation from 5.225V.
Can LP2992IM5-5.0 operate stably with a 1µF output capacitor?
No - LP2992IM5-5.0 requires a minimum of 2.2µF ceramic output capacitance for guaranteed stability per Recommended Operating Conditions. While the nominal derated value must remain ≥1µF, using only 1µF violates the 2.2µF minimum and risks oscillation. The device is optimized for 2.2µF–200µF X7R/X5R MLCCs with ≤1Ω ESR.
Does LP2992IM5-5.0 support reverse current blocking?
No - LP2992IM5-5.0 does not integrate reverse current blocking. When the output voltage exceeds the input (e.g., during hot-swap or backup-battery scenarios), current can flow from OUT to IN through the pass transistor's body diode. External protection (e.g., series Schottky diode or ideal diode controller) is required if reverse current must be prevented.
What is the purpose of the BYPASS pin on LP2992IM5-5.0, and what capacitor value is recommended?
The BYPASS pin on LP2992IM5-5.0 connects to an external capacitor that filters the internal voltage reference, directly reducing output noise. A 10nF ceramic capacitor to GND is specified to achieve the rated 30µVRMS output noise (300Hz–50kHz). Smaller values (100pF–1nF) yield progressively higher noise; larger values offer diminishing returns and may affect transient response.
Is LP2992IM5-5.0 pin-compatible with earlier LP2992 variants in SOT-23-5?
Yes - LP2992IM5-5.0 shares identical pinout, footprint, and electrical connections with all LP2992 variants in the DBV (SOT-23-5) package, including legacy chips. However, performance differs: newer revisions offer ±0.5% accuracy (vs. ±1.5%), lower IQ, improved PSRR (70dB vs. 45dB), and tighter dropout - all while maintaining full mechanical and functional compatibility.
LP2992IM5-5.0 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):
- 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
LP2992IM5-5.0 FAQ
1.How can I place an order for LP2992IM5-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2992IM5-5.0 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 LP2992IM5-5.0 reliable?
The price and inventory of LP2992IM5-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2992IM5-5.0 is usually 5 days.
3.What payment methods are accepted for LP2992IM5-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2992IM5-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2992IM5-5.0?
LP2992IM5-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2992IM5-5.0 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 LP2992IM5-5.0?
For technical support, including LP2992IM5-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2992IM5-5.0 requirements.
6.How does Aetrix verify that LP2992IM5-5.0 is sourced from the original manufacturer or authorized distributors?
All LP2992IM5-5.0 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 LP2992IM5-5.0 meets industry standards.
7.What is the process for return or replacement of LP2992IM5-5.0?
All LP2992IM5-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2992IM5-5.0, 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 LP2992IM5-5.0 part is unused and in its original packaging.
Return procedure for LP2992IM5-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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