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Texas Instruments LP2980AIM5X-4.7
- Part No.:
- LP2980AIM5X-4.7
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2980AIM5X-4.7.pdf
- Description:
- IC REG LINEAR 4.7V 50MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,443
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Product details
Overview
LP2980AIM5X-4.7 from Texas Instruments is a fixed-output, micropower, ultra-low dropout (LDO) linear regulator in SOT-23-5 package delivering 4.7 V at up to 50 mA with ±0.5% initial accuracy, 1% load-and-temperature accuracy, and 69 µA quiescent current at zero load - designed for powering low-voltage microcontrollers and sensors in space-constrained, battery-sensitive applications such as solid-state drives and electricity meters.
For engineers reviewing the LP2980AIM5X-4.7 datasheet, LP2980AIM5X-4.7 pinout, LP2980AIM5X-4.7 application, or LP2980AIM5X-4.7 equivalent, key selection considerations include dropout voltage ≤145 mV at 50 mA/125°C, PSRR of 75 dB at 1 kHz, stability with 2.2 µF ceramic output capacitors, and integrated enable (ON/OFF) control with 1.12 µA shutdown current.
Technical Context
The LP2980AIM5X-4.7 employs a CMOS pass transistor architecture enabling ultra-low dropout (as low as 2.75 mV at 0 mA) and high PSRR performance. Its internal bandgap reference and error amplifier deliver tight regulation across line, load, and temperature - maintaining ±1% output accuracy from –40°C to +125°C at full 50 mA load.
It integrates active features including undervoltage lockout (UVLO) with 2.2 V turn-on threshold and 0.13 V hysteresis, thermal shutdown at 170°C with 20°C hysteresis, brick-wall current limiting (150 mA), and an active output pulldown during disable to rapidly discharge output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.7 V ±0.5% (A-grade new chip); enables precise biasing of 4.7 V–tolerant logic and analog circuitry without external feedback. |
| Input Voltage Range | 2.5 V to 16 V; supports wide-input systems including 3.3 V, 5 V, and 12 V rails with margin for ripple or sag. |
| Max Output Current | 50 mA continuous; sufficient for MCU cores, RF transceivers, and sensor signal chains in compact embedded designs. |
| Quiescent Current | 69 µA at ILOAD = 0 mA; minimizes standby power loss in always-on or battery-backed subsystems. |
| Dropout Voltage | 120–145 mV at 50 mA over –40°C to +125°C; allows regulation from 4.82 V input at worst-case temp, extending usable input range. |
| PSRR | 75 dB @ 1 kHz, 45 dB @ 1 MHz; effectively suppresses switching noise from upstream DC/DC converters, reducing need for post-regulator filtering. |
| Stability | Stable with ≥2.2 µF ceramic output capacitor; eliminates need for tantalum or electrolytic caps, improving reliability and board area efficiency. |
Pinout & Package
LP2980AIM5X-4.7 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9 mm × 1.6 mm, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply | Accepts 2.5–16 V input; requires ≥1 µF ceramic capacitor to GND for stability and transient response. |
| 2 (GND) | Ground reference | Common substrate return path for all internal circuits; must be connected to low-impedance system ground plane. |
| 3 (ON/OFF) | Enable control | Active-high logic input; >1.6 V enables regulator, <0.15 V disables it; internal pulldown ensures safe default-off state. |
| 4 (N/C) | No-connect | Reserved for factory calibration; must remain floating - no connection to GND, VIN, or any potential to avoid VOUT drift or damage. |
| 5 (OUT) | Regulated output | Delivers stable 4.7 V; requires ≥2.2 µF ceramic capacitor to GND; internal pulldown discharges output when disabled. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | As low as 2.75 mV at 0 mA enables operation with minimal headroom - critical for single-cell Li-ion or low-VIN industrial rails. |
| High PSRR | 75 dB at 1 kHz attenuates DC/DC switching artifacts, allowing cleaner power delivery to noise-sensitive ADCs and PLLs. |
| Enable-controlled shutdown | ON/OFF pin reduces total system current to 1.12 µA typical, supporting deep-sleep modes in IoT edge nodes and metering devices. |
| Integrated protection | Thermal shutdown (170°C), current limiting (150 mA), and UVLO prevent fault propagation and ensure robust field operation. |
| Low-noise operation | 140 µVRMS output noise (300 Hz–50 kHz, 3.3 V variant) supports precision analog front-ends without added filtering. |
Applications
| Residential Breakers | Solid-State Drives (SSD) |
|---|---|
Use Scenario: Powering real-time monitoring ICs and communication interfaces in smart circuit breakers operating from 3.3 V or 5 V rails with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary 4.7 V LDO supplying power to microcontroller, isolated RS-485 transceiver, and current-sense amplifier. Use Value: Ultra-low dropout ensures regulation even during brownout events on the 5 V bus; ±1% accuracy maintains ADC reference integrity across –40°C to +85°C. | Use Scenario: Providing clean, stable 4.7 V bias to NAND flash controller and DRAM buffer in consumer and enterprise SSD modules. IC Role / Device Role / Timing Role: Secondary LDO after main DC/DC converter, rejecting switching noise to preserve data integrity and reduce bit-error rates. Use Value: 75 dB PSRR at 1 kHz suppresses 500 kHz–2 MHz DC/DC ripple; 69 µA IQ extends idle power budget in low-activity states. |
| Electricity Meters | Building Automation Sensors |
Use Scenario: Supplying 4.7 V to metrology ASIC, RTC, and optical IR interface in ANSI C12.20-compliant revenue meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Precision LDO for metrology rail where voltage stability directly impacts energy measurement accuracy. Use Value: ±0.5% initial tolerance and ±1% over temperature meet Class 0.2 metering accuracy requirements; 125°C max junction rating supports sealed, thermally constrained housings. | Use Scenario: Powering low-power Zigbee/Thread SoCs and environmental sensors (temp/humidity/CO₂) in wireless HVAC controllers mounted behind walls. IC Role / Device Role / Timing Role: Always-on LDO for wake-up logic and sensor bias, enabled only during scheduled readings to minimize average current. Use Value: 1.12 µA shutdown current extends 10-year battery life in coin-cell-powered nodes; SOT-23-5 footprint fits narrow PCBs behind standard wall plates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-4702E/TT | 4.7 V fixed, 250 mA max, 1.6 µA IQ, but higher dropout (270 mV @ 250 mA) and lower PSRR (60 dB @ 1 kHz). | Higher current capability suits larger loads, but less suitable for ultra-low-noise or ultra-low-headroom use cases. | Select if higher output current is required and PSRR/dropout are secondary concerns. |
| NCP1117ST4.7T3G | 4.7 V fixed, 1 A max, 6 mA IQ, TO-220/SOT-223 package, 1.2 V dropout min - significantly higher IQ and larger footprint. | Designed for high-current, non-portable applications; not viable for space- or power-constrained designs. | Choose only when >100 mA load current or industrial-grade thermal dissipation is mandatory. |
Compared with MCP1700T-4702E/TT and NCP1117ST4.7T3G, the LP2980AIM5X-4.7 delivers superior micropower efficiency (69 µA vs. 1.6 µA–6 mA), tighter accuracy (±0.5% vs. ±2%), and lower dropout - making it optimal for compact, battery-aware, noise-sensitive systems where 50 mA suffices.
Availability
LP2980AIM5X-4.7 is available at Aetrix Electronics and suitable for residential breakers, solid-state drives, and electricity meters requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LP2980AIM5X-4.7 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 power management technologies, with decades of expertise in high-reliability LDO design.
The LP2980-N product line targets cost-sensitive, space-constrained applications demanding ultra-low IQ, high PSRR, and wide-input operation - especially in metering, industrial sensing, and portable electronics.
FAQ
What is the output voltage tolerance of the LP2980AIM5X-4.7 over temperature and load?
The LP2980AIM5X-4.7 maintains ±1% output voltage accuracy across the full operating temperature range (–40°C to +125°C) and full load range (0–50 mA). This specification applies to the "new chip" revision and ensures reliable biasing for precision analog and digital circuits without external trimming.
Does the LP2980AIM5X-4.7 require an external pull-up on the ON/OFF pin?
No - the LP2980AIM5X-4.7 does not require an external pull-up on the ON/OFF pin. When unused, the pin may be tied directly to VIN to enable the device permanently. The internal circuitry provides appropriate thresholds (≥1.6 V to enable, ≤0.15 V to disable), and no external bias is needed for basic operation.
Can the LP2980AIM5X-4.7 operate with a 2.2 µF ceramic output capacitor?
Yes - the LP2980AIM5X-4.7 is explicitly characterized and guaranteed stable with a minimum 2.2 µF ceramic output capacitor (X5R/X7R, 10% tolerance). This eliminates reliance on bulkier, less reliable tantalum or aluminum electrolytic capacitors and simplifies layout in high-density designs.
What is the maximum junction temperature and thermal shutdown behavior of the LP2980AIM5X-4.7?
The LP2980AIM5X-4.7 features thermal shutdown activation at 170°C (typical) with a 20°C hysteresis (reset at ~150°C). Its RθJA is 178.6°C/W in the SOT-23-5 (DBV) package. To maintain reliability, keep the junction temperature ≤125°C under continuous operation using appropriate PCB copper area and airflow.
Is pin 4 (N/C) on the LP2980AIM5X-4.7 safe to connect to ground?
No - pin 4 on the LP2980AIM5X-4.7 is designated N/C (no-connect) and reserved for factory calibration. Connecting it to ground, VIN, or any potential risks output voltage drift, calibration corruption, or permanent damage. It must remain electrically floating in all designs.
LP2980AIM5X-4.7 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):
- 4.7V
- 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-4.7 FAQ
1.How can I place an order for LP2980AIM5X-4.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2980AIM5X-4.7 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-4.7 reliable?
The price and inventory of LP2980AIM5X-4.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2980AIM5X-4.7 is usually 5 days.
3.What payment methods are accepted for LP2980AIM5X-4.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2980AIM5X-4.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2980AIM5X-4.7?
LP2980AIM5X-4.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2980AIM5X-4.7 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-4.7?
For technical support, including LP2980AIM5X-4.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2980AIM5X-4.7 requirements.
6.How does Aetrix verify that LP2980AIM5X-4.7 is sourced from the original manufacturer or authorized distributors?
All LP2980AIM5X-4.7 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-4.7 meets industry standards.
7.What is the process for return or replacement of LP2980AIM5X-4.7?
All LP2980AIM5X-4.7 units undergo pre-shipment inspection (PSI). If there is an issue with LP2980AIM5X-4.7, 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-4.7 part is unused and in its original packaging.
Return procedure for LP2980AIM5X-4.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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