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Texas Instruments LP2980IM5X-3.0
- Part No.:
- LP2980IM5X-3.0
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2980IM5X-3.0.pdf
- Description:
- IC REG LINEAR 3V 50MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,496
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Product details
Overview
LP2980IM5X-3.0 from Texas Instruments is a fixed 3.0V, micropower, ultra-low dropout (LDO) linear regulator in SOT-23-5 package, delivering up to 50mA output current with ±0.5% initial accuracy, 1% accuracy over load and temperature, and dropout voltage as low as 2.75mV at 0mA. It operates from 2.5V to 16V input and supports stable regulation with 2.2µF ceramic output capacitors - ideal for powering low-voltage microcontrollers in space-constrained industrial and metering systems.
For engineers reviewing the LP2980IM5X-3.0 datasheet, LP2980IM5X-3.0 pinout, LP2980IM5X-3.0 application, or LP2980IM5X-3.0 equivalent, key selection criteria include its 69μA quiescent current at zero load, 75dB PSRR at 1kHz, thermal shutdown at 170°C, enable-controlled ON/OFF functionality, and compatibility with wide-input, low-noise power rails in SSDs, electricity meters, and building automation nodes.
Technical Context
The LP2980IM5X-3.0 implements a CMOS-based LDO architecture with an internal 1.2V bandgap reference and precision resistor divider to set the 3.0V output. Its pass transistor operates in the ohmic region under ultra-low dropout conditions, enabling regulation even when VIN is only ~3.003V.
It integrates active features including undervoltage lockout (UVLO) with 2.2V turn-on threshold and 0.13V hysteresis, internal soft-start to limit inrush current, output pulldown during disable or UVLO, and brick-wall current limiting (150mA typical). Thermal shutdown activates at 170°C with 20°C hysteresis for safe recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±0.5% (A-grade), ±1% across –40°C to +125°C load/temperature range |
| Input Voltage Range | 2.5V to 16V - supports direct regulation from 3.3V, 5V, or 12V rails without pre-regulation |
| Max Output Current | 50mA continuous - sufficient for MCU cores, sensors, and low-power logic in embedded nodes |
| Quiescent Current | 69μA at 0mA load; 380μA at 50mA - enables multi-year battery life in always-on monitoring devices |
| Dropout Voltage | 120mV at 50mA, 184mV at 50mA over full temperature range - ensures regulation down to VIN = 3.12V |
| PSRR | 75dB at 1kHz, 45dB at 1MHz - effectively suppresses switching noise from upstream DC/DC converters |
| Stability | Stable with ≥2.2µF ceramic output capacitor - eliminates need for tantalum or electrolytic capacitors |
Pinout & Package
LP2980IM5X-3.0 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 1.6mm, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply | Accepts 2.5V–16V; requires ≥1µF bypass capacitor to GND for stability and transient response |
| 2 (GND) | Ground reference | Common substrate connection; must be low-impedance path to system ground plane |
| 3 (ON/OFF) | Enable control | Active-high logic input; >1.6V enables regulator, <0.15V disables it; internal pulldown discharges VOUT when disabled |
| 4 (N/C) | No-connect | Reserved for post-package calibration; must remain floating - no connection to GND, VIN, or test probes |
| 5 (OUT) | Regulated output | Delivers 3.0V ±0.5%; requires ≥2.2µF ceramic capacitor to GND for loop stability and noise filtering |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 69μA at zero load enables energy harvesting and coin-cell applications without sacrificing regulation integrity |
| High PSRR | 75dB @ 1kHz attenuates ripple from noisy switchers, reducing need for additional LC filtering stages |
| Thermal & current protection | Integrated brick-wall current limit (150mA) and thermal shutdown (170°C) prevent damage during fault conditions |
| UVLO with hysteresis | 2.2V turn-on / 2.07V turn-off thresholds ensure clean, bounce-free power sequencing in brownout scenarios |
| Soft-start | Internal ramp limits inrush current during startup, minimizing stress on input capacitance and upstream supplies |
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 budgets. IC Role / Device Role / Timing Role: Primary 3.0V LDO supplying MCU, isolated UART transceivers, and analog front-end sensors. Use Value: Ultra-low dropout ensures operation during brownouts; 1% accuracy maintains ADC reference integrity across temperature swings. | Use Scenario: Regulating auxiliary 3.0V rail for NAND flash I/O buffers and controller peripherals in compact M.2 SSD modules. IC Role / Device Role / Timing Role: Low-noise, high-PSRR post-regulator decoupling switching converter output to meet JEDEC SSD power integrity specs. Use Value: 75dB PSRR at 1kHz suppresses DC/DC switching artifacts, preventing data corruption during high-speed read/write bursts. |
| Electricity Meters | Building Automation |
Use Scenario: Providing stable 3.0V bias to metrology ADCs, RTCs, and secure authentication ICs in Class 0.2 revenue-grade meters operating at –40°C to +85°C. IC Role / Device Role / Timing Role: Precision voltage reference source for analog signal chain components requiring tight long-term stability. Use Value: ±0.5% initial tolerance and ±1% over temperature ensure measurement accuracy compliance without calibration drift. | Use Scenario: Powering wireless SoCs (e.g., Zigbee, Thread) and environmental sensors in battery-backed HVAC controllers and occupancy nodes. IC Role / Device Role / Timing Role: Micropower LDO enabling multi-year operation from primary lithium thionyl chloride cells. Use Value: 69μA quiescent current extends battery life while maintaining fast wake-up response via ON/OFF pin control. |
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 max output, 2.0μA IQ, 600mV dropout at 250mA - higher current but significantly higher dropout and lower PSRR (60dB @ 1kHz) | Better suited for higher-current sensor hubs; less effective for noise-sensitive analog circuits | Select if >50mA load or ultra-low IQ dominates requirements; avoid where PSRR or dropout is critical |
| TLC7703IPK | 3.3V fixed output only, 12μA IQ, no enable pin, 1.2V dropout at 50mA - lacks ON/OFF control and has higher dropout | Targeted at simple always-on rails where enable functionality is unnecessary | Choose only for cost-sensitive, non-enable applications with relaxed dropout and noise requirements |
Compared with MCP1700T-3002E/MB and TLC7703IPK, LP2980IM5X-3.0 uniquely balances ultra-low dropout (120mV), high PSRR (75dB), and enable control in a 5-pin SOT-23 - making it optimal for noise-critical, space-constrained, and battery-aware designs where precision and efficiency coexist.
Availability
LP2980IM5X-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 guaranteed traceable sourcing.
Supply support for LP2980IM5X-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 ICs.
The LP2980-N product line delivers micropower, ultra-low-dropout regulators for industrial, metering, and infrastructure applications demanding precision, reliability, and extended temperature operation (–40°C to +125°C).
FAQ
What is the maximum input voltage rating for LP2980IM5X-3.0?
The LP2980IM5X-3.0 supports a continuous input voltage range of –0.3V to 18V per absolute maximum ratings. For reliable operation, the recommended input range is 2.5V to 16V. Exceeding 16V continuously may impact long-term reliability despite surviving short transients within the 18V absolute limit. Always maintain proper derating and thermal design when operating near maximums.
Does LP2980IM5X-3.0 require an external pull-up on the ON/OFF pin?
No - the LP2980IM5X-3.0 does not require an external pull-up on the ON/OFF pin. When unused, the pin should be tied directly to VIN to enable the device. The part includes internal circuitry that actively pulls the output low during disable, but no internal pull-up exists on the ON/OFF input itself. External pull-up is unnecessary and may interfere with precise enable threshold behavior.
Can LP2980IM5X-3.0 operate stably with a 1µF output capacitor?
No - LP2980IM5X-3.0 requires a minimum of 2.2µF ceramic output capacitance for guaranteed stability per the datasheet. While some configurations may appear functional with 1µF, phase margin degrades and risk of oscillation increases, especially across temperature and load variations. The 2.2µF value accounts for 50% derating of nominal X7R/X5R ceramics, ensuring ≥1.1µF effective capacitance at DC bias and temperature extremes.
What is the thermal shutdown threshold of LP2980IM5X-3.0?
The LP2980IM5X-3.0 activates thermal shutdown at a junction temperature of 170°C (typical), with reset occurring at approximately 150°C due to 20°C hysteresis. This protects the device during sustained overload or poor PCB thermal design. The SOT-23-5 package has a junction-to-ambient thermal resistance (RθJA) of 178.6°C/W, so power dissipation above ~140mW in still air will approach shutdown - layout with copper pour is strongly recommended for >50mA loads.
Is LP2980IM5X-3.0 compatible with ceramic capacitors having ESR above 1Ω?
No - LP2980IM5X-3.0 is specified for stable operation only with output capacitors having ESR ≤1Ω. Using higher-ESR ceramics (e.g., aged or low-voltage-rated types) risks instability. If a higher-ESR bulk capacitor is needed, TI recommends placing a parallel 100nF low-ESR MLCC directly at the OUT pin to maintain loop stability while retaining bulk capacitance elsewhere in the system.
LP2980IM5X-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):
- 0.22V @ 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
LP2980IM5X-3.0 FAQ
1.How can I place an order for LP2980IM5X-3.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2980IM5X-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 LP2980IM5X-3.0 reliable?
The price and inventory of LP2980IM5X-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 LP2980IM5X-3.0 is usually 5 days.
3.What payment methods are accepted for LP2980IM5X-3.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2980IM5X-3.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2980IM5X-3.0?
LP2980IM5X-3.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2980IM5X-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 LP2980IM5X-3.0?
For technical support, including LP2980IM5X-3.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2980IM5X-3.0 requirements.
6.How does Aetrix verify that LP2980IM5X-3.0 is sourced from the original manufacturer or authorized distributors?
All LP2980IM5X-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 LP2980IM5X-3.0 meets industry standards.
7.What is the process for return or replacement of LP2980IM5X-3.0?
All LP2980IM5X-3.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2980IM5X-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 LP2980IM5X-3.0 part is unused and in its original packaging.
Return procedure for LP2980IM5X-3.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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