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Texas Instruments LP2992IM5-3.0
- Part No.:
- LP2992IM5-3.0
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2992IM5-3.0.pdf
- Description:
- IC REG LINEAR 3V 250MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,201
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Product details
Overview
LP2992IM5-3.0 from Texas Instruments is a fixed-output, micropower, ultra-low-dropout linear regulator in SOT-23-5 (DBV) package, delivering 3.0 V at up to 250 mA with ±0.5% output accuracy (new chip), 30 µVRMS output noise (with 10 nF bypass capacitor), and 70 dB PSRR at 1 kHz. It serves as a post-regulator for noise-sensitive analog/RF circuits and low-voltage microcontrollers in battery-powered industrial systems.
For engineers reviewing the LP2992IM5-3.0 datasheet, LP2992IM5-3.0 pinout, LP2992IM5-3.0 application, or LP2992IM5-3.0 equivalent, key selection criteria include dropout voltage at 250 mA (225–260 mV), shutdown current (1.12 µA typ), stability with 2.2 µF ceramic output capacitors, thermal protection, and enable-controlled power sequencing in space-constrained designs.
Technical Context
The LP2992IM5-3.0 uses a CMOS pass transistor architecture with internal bandgap reference and soft-start circuitry to limit inrush current during turn-on. Its BYPASS pin connects to an external 10 nF capacitor to reduce reference noise, enabling ultra-low-noise regulation critical for ADCs and RF front-ends.
It integrates overcurrent limiting (300–350 mA peak), thermal shutdown, and active pull-down on disable. The ON/OFF pin is active-high (0.72 V low threshold, 0.85 V high threshold), and the device operates across –40°C to +125°C junction temperature with input range 2.5 V to 16 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±0.5% (new chip, over load and temperature) - ensures stable supply for 3.0 V I/O domains and core logic without external feedback. |
| Max Output Current | 250 mA continuous - supports moderate-power microcontrollers, sensors, and interface ICs without external heat sinking. |
| Dropout Voltage | 225 mV (typ) at 250 mA, 25°C - enables regulation from 3.225 V input, critical for single-cell Li-ion or 3.3 V rail post-regulation. |
| Ground Pin Current | 875 µA (typ) at 250 mA load - defines total system quiescent power; enables >10-year battery life in always-on sensor nodes. |
| PSRR | 70 dB at 1 kHz, 40 dB at 1 MHz - suppresses switching noise from upstream DC/DC converters, reducing need for bulky post-filtering. |
| Output Noise | 30 µVRMS (300 Hz–50 kHz, with 10 nF BYPASS cap) - meets noise floor requirements of precision ADCs and RF synthesizers. |
| Operating Temp | –40°C to +125°C junction - qualified for under-hood automotive, motor control, and industrial embedded environments. |
Pinout & Package
LP2992IM5-3.0 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9 mm × 2.8 mm, with exposed pad not present (SOT-23-5 DBV variant). Thermal resistance RθJA = 178.6°C/W (JEDEC 2s2p board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input supply connection | Accepts 2.5–16 V input; requires ≥1 µF ceramic capacitor to GND for stability and transient response. |
| OUT (Pin 5) | Regulated output | Delivers fixed 3.0 V; stable with ≥2.2 µF ceramic output capacitor (ESR ≤1 Ω) and no tantalum required. |
| GND (Pin 2) | Power ground reference | Common return for IN, OUT, BYPASS, and ON/OFF; must be low-impedance plane to minimize noise coupling. |
| ON/OFF (Pin 3) | Enable control input | Active-high logic: <0.72 V disables output (1.12 µA shutdown current); >0.85 V enables regulation; tie to IN if unused. |
| BYPASS (Pin 4) | Noise reduction node | Connects to 10 nF capacitor to GND to filter reference voltage noise; reduces output noise to 30 µVRMS. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-noise regulation | 30 µVRMS output noise with 10 nF BYPASS cap - eliminates need for additional LDO stages in RF/analog signal chains. |
| Micropower operation | 69 µA quiescent current at zero load - extends battery runtime in always-on IoT endpoints and remote sensors. |
| Wide-input compatibility | 2.5 V to 16 V input range - supports direct connection to 12 V industrial rails, USB PD, or multi-cell batteries without pre-regulation. |
| Robust protection suite | Internally limited current (300–350 mA peak), thermal shutdown, and active output pull-down on disable - prevents latch-up and bus contention. |
| Low-ESR capacitor support | Stable with 2.2 µF ceramic output caps (no electrolytic/tantalum needed) - improves reliability and reduces board area vs legacy LDOs. |
Applications
| Motor Control Feedback Loop | Active Antenna mMIMO Front-End |
|---|---|
|
Use Scenario: Powers ADCs, op-amps, and position sensors in closed-loop BLDC motor drives operating in harsh thermal environments. IC Role / Device Role / Timing Role: Low-noise 3.0 V bias supply for analog signal conditioning and current sensing circuitry. Use Value: 30 µVRMS noise and 70 dB PSRR prevent switching noise from motor gate drivers from corrupting 12-bit+ current measurements. |
Use Scenario: Supplies low-jitter clock buffers and RF transceiver bias rails in 5G mMIMO active antenna units deployed outdoors. IC Role / Device Role / Timing Role: Post-regulator for clean 3.0 V domain feeding PLL VCOs and mixer LO paths. Use Value: ±0.5% output accuracy over –40°C to +125°C ensures consistent gain and phase alignment across temperature extremes. |
| Industrial Cordless Power Tool MCU | Smart Home Appliance Controller |
|
Use Scenario: Regulates 3.0 V for ARM Cortex-M4 MCU, CAN transceiver, and battery fuel gauge in cordless drills and saws. IC Role / Device Role / Timing Role: Primary 3.0 V LDO for digital subsystem, enabled via MCU GPIO for power-state management. Use Value: 250 mA capability and 225 mV dropout allow operation down to 3.225 V battery voltage, maximizing usable cell capacity. |
Use Scenario: Powers main controller, display driver, and Wi-Fi SoC in smart washers/dryers subject to repeated thermal cycling. IC Role / Device Role / Timing Role: Main 3.0 V supply for microcontroller I/O banks and communication peripherals. Use Value: 178.6°C/W RθJA and –40°C to +125°C rating ensure reliable operation inside sealed, thermally insulated appliance enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, micropower LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL7407LPGEDR | 7-channel high-side driver with integrated 3.3 V LDO (not adjustable); 200 mA max; 60 µVRMS noise; no BYPASS pin. | Designed for LED/display driver integration; lacks standalone LDO flexibility and ultra-low-noise optimization. | Select only when consolidating driver + LDO functions; avoid for precision analog or RF where 30 µVRMS noise is mandatory. |
| TPS7A2030PDBVR | Single-output 3.0 V LDO; 300 mA; 12 µVRMS noise (lower); 6.5 µA IQ; SOT-23-5; but requires ≥1 µF COUT and no BYPASS pin. | Superior noise and IQ, but no dedicated noise-reduction pin - less effective against high-frequency ripple above 100 kHz. | Prefer for ultra-low-power sensor nodes; choose LP2992IM5-3.0 when 10 nF BYPASS-capacitor tuning is needed for specific frequency-domain noise suppression. |
Compared with TPL7407LPGEDR and TPS7A2030PDBVR, LP2992IM5-3.0 uniquely balances ultra-low noise (30 µVRMS with BYPASS), wide input range (2.5–16 V), and robust thermal performance (125°C JT) in a standard SOT-23 footprint-making it optimal for industrial analog and RF power management where noise, input flexibility, and temperature resilience are jointly critical.
Availability
LP2992IM5-3.0 is available at Aetrix Electronics and suitable for motor control feedback loops, active antenna mMIMO front-ends, and industrial cordless power tool MCUs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LP2992IM5-3.0 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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of LDO design heritage and automotive-grade process validation.
The LP2992 product line delivers micropower, low-noise, ultra-low-dropout regulation for noise-sensitive industrial, automotive, and communications systems-designed specifically for post-regulation of switched-mode supplies and powering precision analog/RF circuitry.
FAQ
What is the maximum input voltage rating for LP2992IM5-3.0?
The LP2992IM5-3.0 supports a continuous input voltage range of 2.5 V to 16 V for the new chip revision. Absolute maximum input voltage is 18 V, but operation beyond 16 V is not recommended for sustained use. This wide input range allows direct connection to 12 V industrial buses or multi-cell battery packs without pre-regulation, and the LP2992IM5-3.0 maintains regulation even as input drops near the dropout threshold.
Does LP2992IM5-3.0 require an external bypass capacitor, and why?
Yes, LP2992IM5-3.0 requires a 10 nF capacitor between the BYPASS pin and GND to achieve its specified 30 µVRMS output noise. This capacitor filters the internal bandgap reference voltage, directly reducing noise contribution to the output. Omitting it increases output noise to ~100 µVRMS, degrading performance in ADC and RF applications. The LP2992IM5-3.0 datasheet specifies this as mandatory for low-noise operation.
Can LP2992IM5-3.0 operate with ceramic output capacitors smaller than 10 µF?
Yes, LP2992IM5-3.0 is stable with as little as 2.2 µF ceramic output capacitance (1 µF minimum effective value after derating), unlike many legacy LDOs requiring 10–22 µF tantalum. This reduces board area, cost, and improves reliability. The LP2992IM5-3.0 also supports ESR up to 1 Ω, eliminating the need for low-ESR specialty ceramics in most designs.
What is the shutdown current of LP2992IM5-3.0, and how is it controlled?
The LP2992IM5-3.0 draws 1.12 µA (typ) shutdown current when the ON/OFF pin is driven below 0.72 V. This ultra-low state enables multi-year battery life in always-on monitoring devices. The ON/OFF pin is active-high: driving it >0.85 V enables regulation. If unused, it must be tied to IN; floating the pin is not permitted per the LP2992IM5-3.0 datasheet.
Is LP2992IM5-3.0 compatible with automotive temperature requirements?
Yes, LP2992IM5-3.0 is rated for –40°C to +125°C junction temperature operation and features thermal shutdown, making it suitable for under-dash and engine-compartment-adjacent applications. Its 178.6°C/W RθJA (SOT-23-5) and robust current limiting (300–350 mA peak) meet AEC-Q100 stress test expectations for non-automotive-qualified industrial use cases requiring automotive-grade thermal resilience.
LP2992IM5-3.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 3V
- 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
LP2992IM5-3.0 FAQ
1.How can I place an order for LP2992IM5-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2992IM5-3.0 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 LP2992IM5-3.0 reliable?
The price and inventory of LP2992IM5-3.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2992IM5-3.0 is usually 5 days.
3.What payment methods are accepted for LP2992IM5-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2992IM5-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2992IM5-3.0?
LP2992IM5-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2992IM5-3.0 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 LP2992IM5-3.0?
For technical support, including LP2992IM5-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2992IM5-3.0 requirements.
6.How does Aetrix verify that LP2992IM5-3.0 is sourced from the original manufacturer or authorized distributors?
All LP2992IM5-3.0 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 LP2992IM5-3.0 meets industry standards.
7.What is the process for return or replacement of LP2992IM5-3.0?
All LP2992IM5-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2992IM5-3.0, 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 LP2992IM5-3.0 part is unused and in its original packaging.
Return procedure for LP2992IM5-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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