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Texas Instruments LP2980AIM5X-3.0
- Part No.:
- LP2980AIM5X-3.0
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2980AIM5X-3.0.pdf
- Description:
- IC REG LINEAR 3V 50MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,670
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Product details
Overview
LP2980AIM5X-3.0 from Texas Instruments is a fixed 3.0V, micropower, ultra-low dropout linear regulator in SOT-23-5 package, delivering up to 50mA output current with ±0.5% initial accuracy, 120mV dropout at 50mA, and stable operation with 2.2µF ceramic output capacitors. It serves as a precision post-regulator for low-voltage MCUs and sensors in space-constrained industrial and metering systems.
For engineers reviewing the LP2980AIM5X-3.0 datasheet, LP2980AIM5X-3.0 pinout, LP2980AIM5X-3.0 application, or LP2980AIM5X-3.0 equivalent, key selection criteria include its 69μA quiescent current at zero load, 75dB PSRR at 1kHz, –40°C to +125°C operating junction temperature, enable-controlled shutdown, and compatibility with standard SOT-23 PCB footprints.
Technical Context
The LP2980AIM5X-3.0 implements a CMOS-based LDO architecture with an internal 1.2V bandgap reference, active-high ON/OFF control, and integrated undervoltage lockout (UVLO) with 2.2V turn-on threshold and 0.13V hysteresis. Its pass transistor operates in ohmic region to achieve ultra-low dropout, supported by soft-start circuitry that limits inrush current during enable transitions.
Thermal protection triggers shutdown at 170°C and resets at 150°C, while current limiting clamps output to 150mA under short-circuit conditions. The device features internal output pulldown during disable or UVLO fault conditions, ensuring controlled discharge of downstream capacitance without relying on external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±0.5% (A-grade new chip), enabling direct replacement of legacy 3.0V LDOs without resistor network recalibration. |
| Dropout Voltage | 120mV at 50mA load, allowing regulation from 3.12V input - critical for battery-powered systems near end-of-life voltage. |
| Quiescent Current | 69μA at 0mA load, minimizing standby power loss in always-on IoT sensor nodes and smart meters. |
| PSRR | 75dB at 1kHz, attenuating switching noise from upstream DC/DC converters and reducing need for additional filtering stages. |
| Operating Temperature | –40°C to +125°C junction range, supporting deployment in automotive under-hood, industrial PLC, and electricity meter environments. |
| Stability | Stable with ≥2.2µF ceramic output capacitor (ESR ≤1Ω), eliminating need for tantalum or electrolytic capacitors and improving long-term reliability. |
| Enable Threshold | ON/OFF pin activates above 1.6V (typ), compatible with 1.8V/3.3V GPIO logic and simplifying interface with low-voltage microcontrollers. |
Pinout & Package
LP2980AIM5X-3.0 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 1.6mm, optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply | Accepts 2.5V–16V input; requires ≥1µF ceramic capacitor to GND for stability and transient response. |
| 2 (GND) | Ground reference | Common substrate connection; must be low-impedance path to minimize noise coupling and thermal resistance. |
| 3 (ON/OFF) | Enable control | Active-high logic input; tie to VIN if unused; enables internal pulldown when disabled to discharge VOUT. |
| 4 (N/C) | No-connect | Reserved for factory calibration; must remain floating - no connection to GND, VOUT, or any potential. |
| 5 (OUT) | Regulated output | Delivers 3.0V ±0.5%; requires ≥2.2µF ceramic capacitor to GND with ESR ≤1Ω for guaranteed stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 69μA at zero load enables >10-year battery life in coin-cell-powered utility meters and wireless sensors. |
| High PSRR | 75dB at 1kHz suppresses ripple from buck converter switching frequencies, reducing post-regulation filter component count. |
| Integrated UVLO | 2.2V turn-on threshold with 0.13V hysteresis prevents erratic startup during brownout conditions in industrial power rails. |
| Output Pulldown | Active discharge of VOUT during disable or UVLO fault avoids floating rail issues in multi-rail systems and simplifies power sequencing. |
| Thermal Shutdown | 170°C trip point with 20°C hysteresis protects against sustained overload or poor heatsinking in enclosed enclosures. |
Applications
| Residential Breakers | Solid State Drives (SSD) |
|---|---|
Use Scenario: Powering real-time monitoring ICs and communication interfaces in smart circuit breakers with limited board area and strict thermal constraints. IC Role / Device Role / Timing Role: Primary 3.0V supply for ARM Cortex-M0+ MCU and RS-485 transceiver, replacing less accurate 3.3V regulators to meet IEC 61000-4-5 surge immunity requirements. Use Value: ±0.5% output accuracy ensures ADC reference stability across temperature, while 120mV dropout extends operational time during AC line sags. | Use Scenario: Providing clean 3.0V bias to NAND flash controllers and DRAM buffers in embedded SSD modules where EMI and thermal density are critical. IC Role / Device Role / Timing Role: Low-noise post-regulator after a 5V-to-3.3V buck stage, decoupling digital switching noise from sensitive memory timing circuits. Use Value: 75dB PSRR at 1kHz reduces switching ripple-induced bit errors; 69μA IQ minimizes idle power in enterprise storage standby modes. |
| Electricity Meters | Building Automation |
Use Scenario: Supplying metrology ASICs and isolated communication interfaces in ANSI C12.20-compliant revenue-grade electricity meters operating continuously for 15+ years. IC Role / Device Role / Timing Role: Precision 3.0V rail for 24-bit sigma-delta ADC and RTC, requiring long-term drift stability and low thermal coefficient. Use Value: ±1% total accuracy over –40°C to +125°C eliminates calibration drift compensation firmware; N/C pin isolation prevents field-programming interference. | Use Scenario: Powering Zigbee/BLE SoCs and environmental sensor clusters in HVAC controllers deployed in unconditioned mechanical rooms. IC Role / Device Role / Timing Role: Main 3.0V supply for wireless transceivers and analog front-ends, enabled/disabled via microcontroller GPIO to manage duty-cycled operation. Use Value: Active pulldown on disable ensures rapid rail collapse for deterministic wake-up timing; 150mA short-circuit limit protects against wiring faults in distributed sensor networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | 300mA output, 1.6μA IQ, but only 65dB PSRR at 1kHz and requires ≥1μF output cap; no UVLO or pulldown. | Better for ultra-low-power always-on sensors, worse for noise-sensitive analog/metrology loads. | Select when max load exceeds 50mA or standby current is primary concern; avoid where PSRR >70dB or controlled discharge is required. |
| TLC7703IPK | 3.0V fixed, 150mA, 12μA IQ, but 250mV dropout at 50mA and no enable pin; uses SOIC-8 package. | Suitable for non-portable industrial controls with ample board space and relaxed dropout requirements. | Choose for cost-sensitive, non-compact designs needing higher current; not viable for SOT-23 footprint or battery-backed applications. |
Compared with MCP1700T-3002E/MB and TLC7703IPK, LP2980AIM5X-3.0 uniquely balances ultra-low dropout (120mV), high PSRR (75dB), and integrated enable/pulldown in a miniature SOT-23-5 package - making it optimal for space-constrained, noise-sensitive, and thermally demanding applications where precision and controllability outweigh raw current capability.
Availability
LP2980AIM5X-3.0 is available at Aetrix Electronics and suitable for residential breakers, solid state drives (SSD), and electricity meters requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for LP2980AIM5X-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 and embedded processing technologies, with decades of expertise in power management IC design and high-volume manufacturing reliability.
The LP2980-N product line delivers micropower, ultra-low-dropout regulators for industrial, metering, and automotive applications where precision, thermal robustness, and small-footprint integration are essential.
FAQ
What is the maximum input voltage rating for LP2980AIM5X-3.0?
The LP2980AIM5X-3.0 supports a continuous input voltage range of –0.3V to 18V for the new chip revision, with recommended operation from 2.5V to 16V. Exceeding 18V risks permanent damage per absolute maximum ratings, and operation below 2.5V may cause dropout or regulation loss due to insufficient headroom for the 120mV dropout at full load.
Does LP2980AIM5X-3.0 require an external pull-up on the ON/OFF pin?
No - the LP2980AIM5X-3.0 does not require an external pull-up on the ON/OFF pin. When unused, TI specifies tying the ON/OFF pin directly to VIN to ensure reliable enablement. The device has no internal pull-up; leaving it floating risks undefined behavior, and connecting it to GND forces shutdown.
Can LP2980AIM5X-3.0 operate stably with a 1µF ceramic output capacitor?
No - LP2980AIM5X-3.0 requires a minimum 2.2µF ceramic output capacitor for guaranteed stability per the datasheet. While the nominal minimum is 1µF (derated 50%), effective capacitance must exceed 1µF at operating bias; 2.2µF ensures margin across voltage, temperature, and aging. Using 1µF risks oscillation or poor transient response.
What is the thermal shutdown behavior of LP2980AIM5X-3.0?
The LP2980AIM5X-3.0 enters thermal shutdown at 170°C (typical junction temperature) and resets at 150°C, providing 20°C hysteresis. During shutdown, the output disables and internal pulldown activates. If the fault persists, the device cycles between shutdown and restart - a behavior confirmed in the Electrical Characteristics table and Functional Description section of the LP2980-N datasheet.
Is pin 4 (N/C) on LP2980AIM5X-3.0 safe to connect to ground for ESD protection?
No - pin 4 (N/C) on LP2980AIM5X-3.0 must remain unconnected and floating. TI explicitly warns against connecting it to ground, VOUT, or any potential, as it is reserved for post-packaging calibration. Doing so may activate internal trim circuitry, forcing VOUT out of tolerance or causing permanent functional deviation in the LP2980AIM5X-3.0.
LP2980AIM5X-3.0 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.22V @ 50mA
- Current - Output:
- 50mA
- Current - Quiescent (Iq):
- 95 µA
- Current - Supply (Max):
- 1.2 mA
- PSRR:
- 63dB (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
LP2980AIM5X-3.0 FAQ
1.How can I place an order for LP2980AIM5X-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2980AIM5X-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 LP2980AIM5X-3.0 reliable?
The price and inventory of LP2980AIM5X-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 LP2980AIM5X-3.0 is usually 5 days.
3.What payment methods are accepted for LP2980AIM5X-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2980AIM5X-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2980AIM5X-3.0?
LP2980AIM5X-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2980AIM5X-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 LP2980AIM5X-3.0?
For technical support, including LP2980AIM5X-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2980AIM5X-3.0 requirements.
6.How does Aetrix verify that LP2980AIM5X-3.0 is sourced from the original manufacturer or authorized distributors?
All LP2980AIM5X-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 LP2980AIM5X-3.0 meets industry standards.
7.What is the process for return or replacement of LP2980AIM5X-3.0?
All LP2980AIM5X-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2980AIM5X-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 LP2980AIM5X-3.0 part is unused and in its original packaging.
Return procedure for LP2980AIM5X-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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