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Texas Instruments LP2980AIM5-4.0/NOPB
- Part No.:
- LP2980AIM5-4.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2980AIM5-4.0/NOPB.pdf
- Description:
- IC REG LINEAR 4V 50MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,038
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Product details
Overview
LP2980AIM5-4.0/NOPB from Texas Instruments (formerly National Semiconductor) is a micropower 50 mA fixed-output ultra-low-dropout linear regulator in SOT-23-5 package, delivering 4.0 V ±0.5% output with 120 mV dropout at 50 mA, 375 µA ground current, and <1 µA shutdown quiescent current. It serves as a precision voltage source for low-power portable electronics requiring stable rail generation from single-cell or multi-cell battery inputs.
For engineers reviewing the LP2980AIM5-4.0/NOPB datasheet, LP2980AIM5-4.0/NOPB pinout, LP2980AIM5-4.0/NOPB application, or LP2980AIM5-4.0/NOPB equivalent, key selection criteria include guaranteed 50 mA output, 1 µF minimum output capacitance requirement, ON/OFF logic control interface, −40°C to +125°C junction temperature range, and SOT-23-5 thermal performance with θJA = 220°C/W.
Technical Context
The LP2980AIM5-4.0/NOPB employs a vertically integrated PNP (VIP™) pass transistor architecture enabling ultra-low dropout and minimal ground current across load range. Its internal circuitry integrates overtemperature and overcurrent protection, fast transient response, and reverse-voltage blocking via inherent VIN–VOUT diode structure.
It operates from 2.1 V to 16 V input, supports logic-level ON/OFF control (1.4 V turn-on threshold), and maintains stability with 1 µF tantalum or ≥2.2 µF ceramic output capacitors. The device does not require external compensation and features 63 dB ripple rejection at 1 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.0 V ±0.5% (A-grade), ensuring tight regulation for sensitive analog/digital rails |
| Max Output Current | 50 mA continuous, sufficient for microcontrollers, sensors, and RF front-ends |
| Dropout Voltage | 120 mV @ 50 mA load - enables operation down to 4.12 V input for full 4.0 V output |
| Quiescent Current | 375 µA @ 50 mA; <1 µA in shutdown - extends battery life in sleep modes |
| Input Voltage Range | 2.1 V to 16 V - compatible with Li-ion, Li-poly, and multi-cell alkaline systems |
| ON/OFF Threshold | High = ≥1.4 V (enable), Low = ≤0.18 V (disable) - interfaces directly with 1.8 V/3.3 V logic |
| Thermal Protection | Integrated overtemperature shutdown - prevents damage during sustained overload or high ambient |
Pinout & Package
SOT-23-5 (NS Package MF05A), 2.92 mm × 1.6 mm × 1.1 mm body, surface-mount, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input supply connection | Accepts 2.1–16 V; must be decoupled locally; reverse-biased diode to VOUT limits backfeed risk |
| GND (Pin 2) | Power ground reference | Device substrate connection; low-impedance return path for load and quiescent current |
| ON/OFF (Pin 3) | Logic enable/disable control | Pulled high to enable; pulled low (<0.18 V) to enter <1 µA shutdown; must not float |
| N/C (Pin 4) | No-connect terminal | Post-package trim pad - electrically isolated; no PCB trace or solder connection permitted |
| VOUT (Pin 5) | Regulated output | Delivers 4.0 V ±0.5%; requires ≥1 µF output capacitor for stability; low ZOUT improves PSRR |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 120 mV @ 50 mA enables use with depleting batteries without rail collapse |
| Minimal external components | Only 1 µF output capacitor required - reduces BOM count and board area vs. legacy LDOs |
| Logic-controlled shutdown | ON/OFF pin accepts standard CMOS/TTL levels - simplifies power sequencing in multi-rail systems |
| High peak current capability | 150 mA typical short-term delivery - supports digital load transients without brownout |
| Wide operating temperature | −40°C to +125°C junction range - qualified for automotive cabin and industrial edge applications |
Applications
| Cellular Phone Power Management | Palmtop/Laptop Subsystem Rail |
|---|---|
Use Scenario: Supplies 4.0 V bias to RF power amplifier stages and baseband ICs in GSM/UMTS handsets operating from single Li-ion cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary LDO providing clean, low-noise 4.0 V rail with fast load transient response to handle PA burst current demands. Use Value: 120 mV dropout ensures regulation remains active until battery reaches ~4.12 V, maximizing usable capacity; <1 µA shutdown extends standby time. | Use Scenario: Powers low-voltage FPGA configuration memory and USB PHY circuits in clamshell-form-factor palmtops using shared 4.0 V system bus. IC Role / Device Role / Timing Role: Secondary regulated rail generator with ON/OFF synchronized to host processor sleep/wake cycles. Use Value: 0.5% output tolerance guarantees reliable memory initialization; 1 µF capacitor footprint minimizes layout area in space-constrained designs. |
| PDA Audio Codec Supply | Digital Camera Sensor Bias |
Use Scenario: Delivers 4.0 V to stereo audio codec ICs in PDAs where EMI-sensitive analog sections coexist with noisy digital processors. IC Role / Device Role / Timing Role: Low-noise analog supply rail with 160 µV RMS output noise (300 Hz–50 kHz) and 63 dB ripple rejection. Use Value: Low ground current (80 µA @ 1 mA) and high PSRR suppress digital switching noise coupling into audio paths. | Use Scenario: Provides stable 4.0 V bias to CMOS image sensor analog front-end and timing controller in compact digital cameras. IC Role / Device Role / Timing Role: Precision voltage reference for sensor ADC reference and pixel array biasing under variable illumination conditions. Use Value: −40°C to +125°C operation ensures reliability during flash-induced thermal cycling; 150 mA peak current handles sensor startup surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-dropout regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76340DBVR | 4.0 V output, 150 mA max, 125 mV dropout @ 150 mA, 85 µA IQ, SOT-23-5 | Higher output current but higher quiescent current; lacks shutdown pin | Select when >50 mA load or no ON/OFF control needed; verify thermal margin at full load |
| MCP1700T-4002E/TT | 4.0 V output, 250 mA max, 175 mV dropout @ 250 mA, 1.6 µA IQ, SOT-23-3 | Lower IQ but no enable pin; 3-pin package eliminates N/C and ON/OFF functionality | Choose for ultra-low-power always-on rails where shutdown is unnecessary and board space is critical |
Compared with LP2980AIM5-4.0/NOPB, TPS76340DBVR offers higher current headroom but sacrifices shutdown control and micropower efficiency, while MCP1700T-4002E/TT achieves nanoscale quiescent current at the cost of functional flexibility and pin compatibility.
Availability
LP2980AIM5-4.0/NOPB is available at Aetrix Electronics and suitable for cellular phone power management, palmtop subsystem rails, PDA audio codecs, and digital camera sensor biasing requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for LP2980AIM5-4.0/NOPB 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 acquired National Semiconductor in 2011 and maintains its legacy analog portfolio, including precision regulators, with full datasheet, simulation model, and application support.
The LP2980 series was designed for battery-powered portable electronics demanding micropower operation, ultra-low dropout, and minimal external components - targeting space- and energy-constrained applications from handhelds to wearables.
FAQ
What is the minimum input voltage required for LP2980AIM5-4.0/NOPB to maintain regulation?
The LP2980AIM5-4.0/NOPB requires an input voltage ≥4.12 V to sustain 4.0 V output at 50 mA load, based on its 120 mV typical dropout voltage. At lighter loads (e.g., 1 mA), dropout drops to 7 mV, allowing regulation down to ~4.007 V. Input must remain ≥2.1 V per absolute maximum ratings, but regulation ceases below the dropout threshold.
Can LP2980AIM5-4.0/NOPB be used with ceramic output capacitors?
Yes, LP2980AIM5-4.0/NOPB supports ceramic output capacitors, but requires ≥2.2 µF for stability per National Semiconductor Application Hints. Multilayer ceramics with appropriate ESR (verified in Table 3 of DS012078) prevent oscillation; 4.7 µF is recommended for improved transient response and phase margin, especially at lower output voltages.
Is the N/C pin (Pin 4) on LP2980AIM5-4.0/NOPB safe to connect to ground or leave floating?
No - Pin 4 is a no-connect (N/C) terminal used for post-package trim and is electrically isolated. Connecting it to ground, VIN, or any other node may compromise regulation or cause malfunction. Per datasheet Figure 3 and Pin Descriptions, it must remain unconnected on PCB layout and solder mask.
Does LP2980AIM5-4.0/NOPB provide reverse-voltage protection?
LP2980AIM5-4.0/NOPB contains an inherent reverse-biased diode between VIN and VOUT due to its PNP pass structure. If VOUT exceeds VIN by >VBE (~0.7 V), the diode becomes forward-biased and allows up to 100 mA reverse current. This is not true protection - external diodes or MOSFET-based reverse-blocking circuits are required for robust reverse-voltage immunity.
What is the thermal resistance (θJA) of LP2980AIM5-4.0/NOPB in SOT-23-5 package?
The junction-to-ambient thermal resistance (θJA) for LP2980AIM5-4.0/NOPB in the SOT-23-5 package (NS MF05A) is 220°C/W under standard JEDEC test conditions (1s² copper pad). Actual thermal performance depends on PCB copper area, airflow, and adjacent heat sources; exceeding power dissipation limits triggers internal thermal shutdown.
LP2980AIM5-4.0/NOPB 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):
- 4V
- 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
LP2980AIM5-4.0/NOPB FAQ
1.How can I place an order for LP2980AIM5-4.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2980AIM5-4.0/NOPB 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 LP2980AIM5-4.0/NOPB reliable?
The price and inventory of LP2980AIM5-4.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2980AIM5-4.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2980AIM5-4.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2980AIM5-4.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2980AIM5-4.0/NOPB?
LP2980AIM5-4.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2980AIM5-4.0/NOPB 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 LP2980AIM5-4.0/NOPB?
For technical support, including LP2980AIM5-4.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2980AIM5-4.0/NOPB requirements.
6.How does Aetrix verify that LP2980AIM5-4.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2980AIM5-4.0/NOPB 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 LP2980AIM5-4.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2980AIM5-4.0/NOPB?
All LP2980AIM5-4.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2980AIM5-4.0/NOPB, 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 LP2980AIM5-4.0/NOPB part is unused and in its original packaging.
Return procedure for LP2980AIM5-4.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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