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Texas Instruments LP2980AIM5X-5.0
- Part No.:
- LP2980AIM5X-5.0
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2980AIM5X-5.0.pdf
- Description:
- IC REG LINEAR 5V 50MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,514
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Product details
Overview
LP2980AIM5X-5.0 from Texas Instruments is a fixed 5.0V, micropower, ultra-low dropout (LDO) linear regulator in SOT-23-5 package, delivering up to 50mA output current with ±0.5% initial accuracy, 1% load-and-temperature accuracy, and 69μA quiescent current at zero load - designed for low-voltage MCU power rails in space-constrained industrial and metering systems.
For engineers reviewing the LP2980AIM5X-5.0 datasheet, LP2980AIM5X-5.0 pinout, LP2980AIM5X-5.0 application, or LP2980AIM5X-5.0 equivalent, key selection criteria include dropout voltage at 50mA (≤145mV), PSRR (75dB @ 1kHz), stability with 2.2µF ceramic output capacitors, thermal shutdown threshold (170°C), and ON/OFF enable functionality with internal pulldown.
Technical Context
The LP2980AIM5X-5.0 implements a CMOS-based LDO architecture with an internal bandgap reference (1.2V), active-high enable (ON/OFF pin), and integrated undervoltage lockout (UVLO) with 2.2V rising threshold and 0.13V hysteresis. It features brick-wall current limiting (150mA typical) and thermal shutdown with 170°C trip and 150°C reset points.
Its regulation loop maintains 5.0V output across input voltages from 2.5V to 16V, with dropout as low as 2.75mV at 0mA and ≤145mV at 50mA over –40°C to +125°C junction temperature. The device supports fast transient response and includes internal output pulldown during disable or UVLO conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±0.5% (A-grade new chip); ensures stable supply for 5V-tolerant logic and analog peripherals. |
| Input Voltage Range | 2.5V to 16V; accommodates wide-input sources including battery stacks, DC/DC post-regulation, and unregulated industrial rails. |
| Max Output Current | 50mA continuous; sufficient for low-power MCUs, sensors, and interface ICs without external pass devices. |
| Quiescent Current | 69μA at ILOAD = 0mA; enables multi-year operation in battery-backed or energy-harvesting applications. |
| Dropout Voltage | ≤145mV at 50mA, –40°C to +125°C; allows regulation from 5.145V input, minimizing headroom loss in tight-margin systems. |
| PSRR | 75dB @ 1kHz, 45dB @ 1MHz; effectively suppresses switching noise from upstream DC/DC converters. |
| Thermal Shutdown | 170°C trip, 150°C reset; protects against sustained overload or poor PCB thermal design without latch-up. |
Pinout & Package
LP2980AIM5X-5.0 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 connection | Accepts 2.5–16V; requires ≥1µF ceramic capacitor to GND for stability and EMI suppression. |
| 2 (GND) | Power ground reference | Common return path for input, output, and internal circuitry; must be low-impedance and thermally coupled to PCB copper. |
| 3 (ON/OFF) | Active-high enable control | Drives high (>1.6V) to enable output; pulls low (<0.15V) to disable with internal pulldown and output discharge. |
| 4 (N/C) | No-connect calibration pin | Reserved for factory VOUT accuracy trim; must remain floating - no connection to GND, VIN, or test probes. |
| 5 (OUT) | Regulated 5.0V output | Delivers up to 50mA; requires ≥2.2µF ceramic capacitor to GND for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 2.75mV typical at 0mA enables operation with minimal input overhead - critical for single-cell Li-ion or low-VIN legacy systems. |
| High PSRR | 75dB @ 1kHz attenuates ripple from switching regulators, reducing need for bulky post-filtering in mixed-signal designs. |
| Stable with 2.2µF ceramic | Eliminates reliance on tantalum or electrolytic capacitors, improving reliability, lifetime, and temperature performance. |
| Integrated UVLO | 2.2V turn-on threshold with 0.13V hysteresis prevents erratic startup during brownout or slow-rising input conditions. |
| Output pulldown on disable | Actively discharges output capacitance when disabled, preventing floating rail issues in sequenced power systems. |
Applications
| Residential Breakers | Solid State Drives (SSD) |
|---|---|
Use Scenario: Powering microcontroller, RTC, and communication interfaces in smart circuit breakers with limited board area and battery backup. IC Role / Device Role / Timing Role: Primary 5V LDO supplying MCU core and isolated UART transceivers during mains-off operation. Use Value: 69μA quiescent current extends battery life; 1% accuracy ensures reliable ADC reference and sensor biasing across temperature. | Use Scenario: Regulating 5V supply for NAND flash controller and DRAM cache in embedded SSD modules. IC Role / Device Role / Timing Role: Low-noise post-regulator for memory subsystem, decoupling high-frequency switching noise from upstream DC/DC. Use Value: 75dB PSRR at 1kHz minimizes bit-error rate induced by power rail noise; SOT-23 footprint saves space in dense BGA packages. |
| Electricity Meters | Building Automation |
Use Scenario: Providing stable 5V rail for metrology ASIC, optical isolation drivers, and tamper-detection circuitry in ANSI C12.20-compliant meters. IC Role / Device Role / Timing Role: Precision LDO for analog front-end and real-time clock, operating continuously over –40°C to +85°C ambient. Use Value: ±1% output accuracy across load and temperature meets Class 0.2 metrology requirements; thermal shutdown prevents failure under fault conditions. | Use Scenario: Powering wireless SoCs (Zigbee, BLE), environmental sensors, and actuator drivers in HVAC controllers and lighting nodes. IC Role / Device Role / Timing Role: Enable-controlled 5V regulator enabling deep-sleep mode with sub-100μA system standby current. Use Value: ON/OFF pin allows full system power gating; 145mV dropout at 50mA supports operation from 5.15V PoE-derived rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-5002E/MB | 30mA max output, 1.6μA IQ, 600mV dropout at 250mA - higher dropout, lower current, much lower IQ. | Suitable only for ultra-low-power <10mA loads; not viable for 50mA MCU + peripheral combinations. | Select if system load is ≤30mA and standby current is priority over output capability. |
| TLC7705IPK | 50mA output, 15μA IQ, but ±2% accuracy and no enable pin - lacks precision and control flexibility. | Acceptable for non-critical digital rails where 5V tolerance >±2% is permitted and enable sequencing is unnecessary. | Choose only when cost is primary constraint and ±1% accuracy or ON/OFF control is not required. |
Compared with MCP1700T-5002E/MB and TLC7705IPK, LP2980AIM5X-5.0 uniquely balances 50mA drive, ±0.5% accuracy, 69μA IQ, and enable-controlled output pulldown - making it optimal for precision, medium-current, space-constrained industrial LDO applications.
Availability
LP2980AIM5X-5.0 is available at Aetrix Electronics and suitable for residential breakers, solid state drives (SSD), and electricity meters requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LP2980AIM5X-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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability industrial and automotive-grade components.
The LP2980-N series is part of TI's precision LDO portfolio, engineered for ultra-low dropout, high PSRR, and micropower operation in safety-critical and long-lifetime applications such as smart grid infrastructure and industrial control systems.
FAQ
What is the maximum input voltage rating for LP2980AIM5X-5.0?
The LP2980AIM5X-5.0 has an absolute maximum continuous input voltage of 18V per the latest revision of its datasheet (SNOS733R, February 2025). Its recommended operating range is 2.5V to 16V. Exceeding 18V risks permanent damage, and operation above 16V is outside specified conditions - always verify actual VIN against both absolute max and recommended ranges in your design.
Does LP2980AIM5X-5.0 require an external capacitor on the ON/OFF pin?
No, LP2980AIM5X-5.0 does not require an external capacitor on the ON/OFF pin. The pin is a standard CMOS input with internal hysteresis and pull-down behavior during disable. TI's datasheet specifies only voltage thresholds (0.15V low, 1.6V high) and leakage limits (≤2.25μA), with no recommendation for bypassing or filtering - direct connection to MCU GPIO or open-drain driver is fully supported.
Can LP2980AIM5X-5.0 operate stably with a 1µF output capacitor?
No - LP2980AIM5X-5.0 requires a minimum 2.2µF ceramic output capacitor for guaranteed stability per the "new chip" specifications. While the datasheet notes that 1µF is the *effective* minimum after derating, this assumes use of high-quality X7R/X5R MLCCs with low ESR; 2.2µF is the nominal value validated across process and temperature. Using only 1µF risks oscillation or degraded transient response.
What is the thermal resistance (RθJA) of LP2980AIM5X-5.0 in its SOT-23-5 package?
The junction-to-ambient thermal resistance (RθJA) for LP2980AIM5X-5.0 in the DBV (SOT-23-5) package is 178.6°C/W under JEDEC-standard 2s2p PCB conditions. This value assumes a 1-inch² copper pad with two thermal vias - actual RθJA improves significantly with enhanced PCB copper area and via count, enabling higher continuous power dissipation in well-designed layouts.
Is pin 4 (N/C) of LP2980AIM5X-5.0 safe to leave unconnected on the PCB?
Yes - pin 4 of LP2980AIM5X-5.0 is explicitly designated as N/C (no-connect) and reserved for post-package factory calibration. TI's datasheet mandates that it remain floating: no connection to GND, VIN, or any test point. Continuity testing or probing this pin may activate internal trim circuitry and force VOUT out of specification - leaving it unconnected is mandatory for functional compliance.
LP2980AIM5X-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):
- 0.22V @ 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-5.0 FAQ
1.How can I place an order for LP2980AIM5X-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2980AIM5X-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 LP2980AIM5X-5.0 reliable?
The price and inventory of LP2980AIM5X-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 LP2980AIM5X-5.0 is usually 5 days.
3.What payment methods are accepted for LP2980AIM5X-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2980AIM5X-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2980AIM5X-5.0?
LP2980AIM5X-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2980AIM5X-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 LP2980AIM5X-5.0?
For technical support, including LP2980AIM5X-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2980AIM5X-5.0 requirements.
6.How does Aetrix verify that LP2980AIM5X-5.0 is sourced from the original manufacturer or authorized distributors?
All LP2980AIM5X-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 LP2980AIM5X-5.0 meets industry standards.
7.What is the process for return or replacement of LP2980AIM5X-5.0?
All LP2980AIM5X-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2980AIM5X-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 LP2980AIM5X-5.0 part is unused and in its original packaging.
Return procedure for LP2980AIM5X-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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