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Texas Instruments LP2980IM5X-4.7
- Part No.:
- LP2980IM5X-4.7
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2980IM5X-4.7.pdf
- Description:
- IC REG LINEAR 4.7V 50MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,953
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Product details
Overview
LP2980IM5X-4.7 from Texas Instruments is a micropower 50-mA ultra-low-dropout linear regulator in SOT-23-5 package, delivering fixed 4.7 V output with ±0.5% initial accuracy (A-grade), 120 mV typical dropout at 50 mA, <1 µA shutdown current, and stable operation with only 1 µF output capacitance. It serves as a precision voltage source for low-power portable systems where battery life and tight regulation are critical.
For engineers reviewing the LP2980IM5X-4.7 datasheet, LP2980IM5X-4.7 pinout, LP2980IM5X-4.7 application, or LP2980IM5X-4.7 equivalent, key selection criteria include guaranteed 50-mA output under 125°C junction temperature, ON/OFF logic control with 0.18 V disable threshold, ground current as low as 80 µA at 1 mA load, and compatibility with ceramic, tantalum, and electrolytic output capacitors ≥1 µF.
Technical Context
The LP2980IM5X-4.7 uses a vertically integrated PNP (VIP) pass transistor architecture to achieve ultra-low dropout and minimal ground current across load range. Its internal bandgap reference and error amplifier maintain output stability over −40°C to +125°C, with line regulation of 0.007%/V and load regulation within ±0.75% from 1 mA to 50 mA.
It integrates active shutdown control via the ON/OFF pin, enabling sleep mode with <1 µA quiescent current, and includes foldback current limiting (100–150 mA peak), thermal shutdown, and reverse-current protection through the inherent PNP base-collector diode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.7 V ±0.5% (A-grade) - ensures stable rail for 4.5–4.9 V logic or analog circuitry without external feedback. |
| Max Output Current | 50 mA - sufficient for powering microcontrollers, sensors, or RF front-ends in space-constrained portable designs. |
| Dropout Voltage | 120 mV typical at 50 mA - enables regulation from 4.82 V input, extending usable battery voltage range in single-cell Li-ion or multi-cell alkaline systems. |
| Quiescent Current | 375 µA typical at 50 mA; <1 µA in shutdown - minimizes standby power loss, critical for always-on battery-backed functions. |
| Input Voltage Range | 2.1 V to 16 V - supports wide input sources including unregulated DC-DC outputs, USB, or industrial rails. |
| Output Capacitor | 1 µF minimum (ceramic/tantalum) - reduces BOM count and PCB area; 2.2 µF improves transient response and noise rejection. |
| Ripple Rejection | 63 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters, preserving signal integrity in mixed-signal applications. |
| Operating Temp | −40°C to +125°C junction - qualified for automotive cabin, industrial control, and extended-temperature embedded deployments. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads, JEDEC MO-178 compliant. Thermal resistance RθJA = 175.7°C/W on high-K PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.1–16 V; requires local 1 µF bypass capacitor to minimize AC impedance and improve PSRR. |
| 2 (GND) | Ground reference | Device substrate connection; must be low-impedance path to system ground to ensure regulation accuracy and thermal performance. |
| 3 (ON/OFF) | Enable/disable control input | Logic-high (>1.6 V) enables regulation; logic-low (<0.18 V) disables output and reduces IQ to <1 µA - supports host-controlled power sequencing. |
| 4 (NC) | No-connect terminal | Floating test pin reserved for factory calibration; must remain unconnected - soldering or probing risks output voltage drift or damage. |
| 5 (OUT) | Regulated output | Delivers 4.7 V ±0.5%; requires ≥1 µF output capacitor for loop stability; ESR must be within 0.1–10 Ω for ceramic/tantalum types. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 120 mV at 50 mA load enables operation down to 4.82 V input - extends battery runtime in single-cell systems. |
| High-accuracy output | ±0.5% initial tolerance (A-grade) eliminates need for post-production trimming in precision sensor or ADC reference applications. |
| Minimal external components | Stable with only 1 µF output capacitor - reduces bill-of-materials cost and PCB footprint versus legacy LDOs requiring 10 µF+. |
| Active shutdown control | ON/OFF pin draws <1 µA when pulled low - allows microcontroller GPIO to gate power to peripheral subsystems without leakage penalties. |
| Robust protection | Integrated thermal shutdown, foldback current limiting (100–150 mA), and reverse-current blocking prevent damage during fault conditions. |
| Wide temperature operation | Specified from −40°C to +125°C junction - suitable for under-hood automotive, industrial motor drives, and outdoor IoT nodes. |
Applications
| Cellular Phone Power Rail | Portable Medical Sensor |
|---|---|
Use Scenario: Supplies 4.7 V bias to RF power amplifier and baseband processor core logic in GSM/UMTS handsets. IC Role / Device Role / Timing Role: Primary LDO providing clean, low-noise 4.7 V rail with fast load transient response to handle burst-mode transmission current spikes. Use Value: 120 mV dropout preserves battery headroom down to 4.82 V; 63 dB ripple rejection suppresses switching noise from PMIC DC-DC stages. | Use Scenario: Powers low-power analog front-end (AFE) and biosensor interface in wearable ECG or pulse oximeter devices. IC Role / Device Role / Timing Role: Precision voltage source for 16-bit ADC reference and op-amp biasing, requiring stable 4.7 V with minimal thermal drift. Use Value: ±0.5% output tolerance and 0.007%/V line regulation ensure measurement accuracy; <1 µA shutdown current enables multi-week standby battery life. |
| Laptop Subsystem Regulator | Industrial PLC I/O Module |
Use Scenario: Generates 4.7 V for USB PHY, touch controller, or fingerprint sensor in ultrabook or 2-in-1 tablet designs. IC Role / Device Role / Timing Role: Secondary LDO decoupling high-speed digital interfaces from noisy main 5 V rail, with ON/OFF controlled by EC firmware. Use Value: Active enable/disable allows dynamic power gating; 1 µF output cap fits tight layout constraints near SoC BGA packages. | Use Scenario: Provides isolated 4.7 V supply for analog input conditioning circuitry in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Local regulation stage converting 24 V industrial bus to precise analog rail, operating continuously across −40°C to +70°C ambient. Use Value: 125°C junction rating and 175.7°C/W thermal resistance support convection-cooled enclosures; overtemperature protection prevents field failures. |
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 | 30 mA max output; 175 mV dropout at 250 mA; no ON/OFF pin; SOT-23-3 package | Lacks enable control and higher current capability; suited for simpler always-on rails | Select when board space is constrained and enable functionality is unnecessary. |
| TLC7701QDR | 100 mA output; 300 mV dropout at 100 mA; 2% output tolerance; includes reset delay timer | Lower accuracy and higher dropout; adds supervisory function not present in LP2980IM5X-4.7 | Choose when system-level reset timing coordination is required alongside regulation. |
Compared with MCP1700T-4702E/TT and TLC7701QDR, the LP2980IM5X-4.7 offers superior output accuracy (±0.5% vs ±2%), lower dropout (120 mV vs 175–300 mV), and integrated ON/OFF control - making it optimal for battery-sensitive, precision-powered applications where both regulation fidelity and dynamic power management matter.
Availability
LP2980IM5X-4.7 is available at Aetrix Electronics and suitable for cellular phone power management, portable medical sensor biasing, laptop subsystem regulation, and industrial PLC analog I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LP2980IM5X-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 designing analog ICs, embedded processors, and system solutions for industrial, automotive, and personal electronics markets.
The LP2980-N product line delivers micropower, ultra-low-dropout regulators optimized for battery-powered portable equipment - emphasizing minimal quiescent current, high accuracy, and robust operation in thermally demanding environments.
FAQ
What is the maximum input voltage rating for the LP2980IM5X-4.7?
The LP2980IM5X-4.7 has an absolute maximum input voltage rating of 16 V. Operation beyond this limit may cause permanent damage. For reliable continuous use, the recommended input voltage range is 2.1 V to 16 V, with optimal performance observed when VIN remains within 0.6 V above VOUT (i.e., ≥5.3 V) to ensure full regulation across temperature and load.
Does the LP2980IM5X-4.7 require an external capacitor on the IN pin?
The LP2980IM5X-4.7 does not mandate an input capacitor for basic stability, but a 1 µF ceramic capacitor placed close to the IN pin significantly improves line transient response and reduces high-frequency noise coupling. TI recommends this practice in all production designs, especially when powered from switching regulators or long PCB traces with inductive impedance.
Can pin 4 (NC) of the LP2980IM5X-4.7 be left floating or must it be grounded?
Pin 4 of the LP2980IM5X-4.7 must be left floating - it is a no-connect terminal reserved for post-package calibration and must not be tied to ground, VCC, or any other potential. Connecting pin 4 risks activating internal trim circuitry, causing output voltage drift outside ±0.5% tolerance or permanent device malfunction.
What is the typical ground pin current of the LP2980IM5X-4.7 at 50 mA load?
The typical ground pin current of the LP2980IM5X-4.7 at 50 mA load and TA = 25°C is 375 µA. This value increases to ≤1200 µA over the full −40°C to +125°C junction temperature range. Low ground current directly contributes to high efficiency in battery-powered systems, particularly at light loads.
Is the LP2980IM5X-4.7 compatible with multilayer ceramic capacitors (MLCCs) on the output?
Yes, the LP2980IM5X-4.7 is compatible with MLCCs, but requires ≥2.2 µF capacitance for stable operation due to their ultra-low ESR. TI validates 2.2 µF and 4.7 µF MLCCs (e.g., Murata GRM42-6Y5V225Z16) - using 1 µF MLCCs may cause oscillation. Tantalum or aluminum electrolytic capacitors ≥1 µF are also supported with broader ESR tolerance.
LP2980IM5X-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
LP2980IM5X-4.7 FAQ
1.How can I place an order for LP2980IM5X-4.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2980IM5X-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 LP2980IM5X-4.7 reliable?
The price and inventory of LP2980IM5X-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 LP2980IM5X-4.7 is usually 5 days.
3.What payment methods are accepted for LP2980IM5X-4.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2980IM5X-4.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2980IM5X-4.7?
LP2980IM5X-4.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2980IM5X-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 LP2980IM5X-4.7?
For technical support, including LP2980IM5X-4.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2980IM5X-4.7 requirements.
6.How does Aetrix verify that LP2980IM5X-4.7 is sourced from the original manufacturer or authorized distributors?
All LP2980IM5X-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 LP2980IM5X-4.7 meets industry standards.
7.What is the process for return or replacement of LP2980IM5X-4.7?
All LP2980IM5X-4.7 units undergo pre-shipment inspection (PSI). If there is an issue with LP2980IM5X-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 LP2980IM5X-4.7 part is unused and in its original packaging.
Return procedure for LP2980IM5X-4.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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