My Inquiry
My Account
Texas Instruments LP2982IM5-5.0
- Part No.:
- LP2982IM5-5.0
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2982IM5-5.0.pdf
- Description:
- IC REG LINEAR 5V 50MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,465
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LP2982IM5-5.0 from Texas Instruments is a fixed 5.0-V, 50-mA ultra-low-dropout linear regulator (LDO) in SOT-23-5 package, designed for battery-powered systems requiring micropower operation, <1 μA shutdown current, and 1% output voltage accuracy (A-grade). It delivers 120 mV typical dropout at 50 mA load and supports input voltages from 2.1 V to 16 V - enabling use with single Li-ion, multi-cell alkaline, or industrial supply rails.
For engineers reviewing the LP2982IM5-5.0 datasheet, LP2982IM5-5.0 pinout, LP2982IM5-5.0 application, or LP2982IM5-5.0 equivalent, key selection criteria include verified 5.0-V output tolerance, ON/OFF logic-controlled enable functionality, bypass-capacitor–enabled low-noise operation (30 μV RMS), and thermal/overcurrent protection in a 2.90 mm × 1.60 mm surface-mount package.
Technical Context
The LP2982IM5-5.0 employs a vertically integrated PNP (VIP) pass transistor architecture to achieve ultra-low dropout and minimal ground current across load range. Its internal 1.23-V bandgap reference enables high-accuracy regulation, while the dedicated BYPASS pin allows external capacitor filtering to reduce output noise to 30 μV RMS (300 Hz–50 kHz).
Functional modes include active regulation (ON/OFF ≥ 1.4 V), sleep mode (<0.15 V), and protected shutdown with <1 μA quiescent current. Protection features include foldback current limiting (150 mA peak), thermal shutdown (125°C junction limit), and reverse-current path mitigation via external Schottky diode recommendation when VOUT > VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±1% (A-grade) - ensures stable MCU core or analog sensor supply without external feedback. |
| Max Output Current | 50 mA continuous - sufficient for low-power microcontrollers, RF modules, or precision sensors. |
| Dropout Voltage | 120 mV typical at 50 mA - enables regulation from 5.12 V input, extending usable battery life in single-cell Li-ion applications. |
| Quiescent Current | 375 μA typical at 50 mA load; <1 μA in shutdown - minimizes standby power loss in always-on portable devices. |
| Noise Performance | 30 μV RMS (300 Hz–50 kHz) with 0.01 μF BYPASS capacitor - meets low-noise requirements for ADC references or audio bias rails. |
| Input Voltage Range | 2.1 V to 16 V - supports wide-input designs including multi-cell alkaline, LiFePO₄, and industrial 12-V rails. |
| Protection Features | Thermal shutdown, foldback current limiting, and reverse-current path warning - reduces need for external protection circuitry. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body size, 0.95 mm height, gull-wing leads, JEDEC MO-178AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | Accepts 2.1–16 V; requires ≥1 μF ceramic/tantalum capacitor within 12.7 mm of pin for stability. |
| 2 - GND | Ground reference | Device substrate connection; must be tied to clean analog ground plane to minimize noise coupling. |
| 3 - ON/OFF | Enable control input | Active-high logic: ≥1.4 V enables regulation; ≤0.15 V disables output and reduces IQ to <1 μA. |
| 4 - BYPASS | Bypass capacitor node | Connects to 0.01 μF NPO/COG ceramic capacitor to filter bandgap reference noise and achieve 30 μV RMS output noise. |
| 5 - OUT | Regulated output | Delivers 5.0 V ±1% at up to 50 mA; requires 2.2 μF tantalum (or 2.2 μF + 1 Ω series resistor if ceramic) for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 120 mV at 50 mA load - enables operation down to 5.12 V input, maximizing energy extraction from aging batteries. |
| 1% output accuracy (A-grade) | Guaranteed over –40°C to +125°C and full load range - eliminates need for post-regulation trimming in precision analog circuits. |
| Logic-controlled shutdown | ON/OFF pin draws <0.01 μA at 0 V and supports direct interface with GPIOs or open-collector drivers - simplifies system-level power sequencing. |
| Low-noise bypass capability | 0.01 μF capacitor on BYPASS pin reduces output noise to 30 μV RMS - suitable for powering ADC references or RF synthesizer VCOs. |
| Integrated protection | Thermal shutdown and foldback current limiting prevent damage during overload or ambient temperature excursions - improves field reliability without external components. |
Applications
| Cellular Handsets | Portable Medical Sensors |
|---|---|
|
Use Scenario: Powering baseband processor I/O rails and SIM card interface in GSM/UMTS handsets with single Li-ion battery (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary 5.0-V LDO supplying digital logic and communication peripherals; regulates during battery voltage sag under transmit bursts. Use Value: 120 mV dropout ensures stable 5.0-V output down to 5.12 V input, extending talk time by >8% versus standard LDOs. |
Use Scenario: Supplying low-noise 5.0-V bias to ECG front-end amplifiers and SAR ADCs in wearable patch monitors. IC Role / Device Role / Timing Role: Precision analog rail generator; BYPASS pin filters reference noise to maintain <12-bit ENOB performance. Use Value: 30 μV RMS noise (with 0.01 μF capacitor) meets medical-grade signal-chain SNR requirements without additional filtering. |
| Laptop Subsystems | Industrial Data Loggers |
|
Use Scenario: Providing 5.0-V supply to USB peripheral controllers and touchpad ICs in ultrabook auxiliary power domains. IC Role / Device Role / Timing Role: Secondary regulated rail enabled/disabled via system PMIC's GPIO to reduce idle power in sleep states. Use Value: <1 μA shutdown current eliminates leakage path when subsystem is inactive, improving S3/S4 state battery retention. |
Use Scenario: Regulating 5.0-V supply for microcontroller, RTC, and isolated RS-485 transceivers in battery-backed environmental loggers. IC Role / Device Role / Timing Role: Main system LDO operating from 3.6-V Li-SOCl₂ primary cell; withstands –40°C to +85°C extended temperature range. Use Value: Guaranteed 1% accuracy and thermal protection ensure reliable timestamping and data integrity over 10-year deployments. |
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 | 300 mA max output, 1.6 μA quiescent current, no ON/OFF pin - higher current but no enable control. | Used in higher-load IoT nodes where shutdown control is handled externally or not required. | Select when >50 mA load or lowest possible IQ dominates; avoid if ON/OFF sequencing is mandatory. |
| TPS78250DRVR | 50 mA max, 1.3 μA IQ, integrated thermal shutdown, but 200 mV dropout at 50 mA - higher dropout than LP2982IM5-5.0. | Favored in TI-centric designs needing same-package footprint and simplified qualification. | Choose when design already uses TPS782 family; accept ~80 mV higher dropout penalty for ecosystem consistency. |
Compared with MCP1700T-5002E/MB and TPS78250DRVR, the LP2982IM5-5.0 uniquely balances ultra-low dropout (120 mV), sub-1-μA shutdown, and ON/OFF controllability in SOT-23-5 - making it optimal for space-constrained, battery-sensitive applications where both efficiency and precise power gating matter.
Availability
LP2982IM5-5.0 is available at Aetrix Electronics and suitable for cellular handsets, portable medical sensors, laptop subsystems, and industrial data loggers requiring stable component supply, long-lifecycle support, and guaranteed A-grade parametric performance.
Supply support for LP2982IM5-5.0 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 company delivering analog and embedded processing solutions, with leadership in power management ICs and precision analog design.
The LP2982 product line targets ultra-low-power, battery-operated applications demanding high accuracy, minimal dropout, and intelligent enable control - especially in portable communications and medical instrumentation.
FAQ
What is the maximum input voltage rating for LP2982IM5-5.0?
The LP2982IM5-5.0 has an absolute maximum input voltage of 16 V, with recommended operating range from 2.1 V to 16 V. Exceeding 16 V risks permanent damage per Absolute Maximum Ratings. This wide range supports multi-cell alkaline, LiFePO₄, and industrial 12-V supplies while maintaining 5.0-V regulation.
Does LP2982IM5-5.0 require an external bypass capacitor for stable operation?
Yes - the LP2982IM5-5.0 requires a 0.01 μF NPO or COG ceramic capacitor between the BYPASS pin and GND to achieve specified 30 μV RMS output noise. Without it, noise increases significantly. The capacitor must exhibit low leakage (<500 nA) across –40°C to +125°C to prevent output voltage drift.
Can LP2982IM5-5.0 be used with ceramic output capacitors?
TI does not recommend ceramic capacitors alone on the LP2982IM5-5.0 output due to their very low ESR (<20 mΩ), which can cause instability. If ceramic is used, a 1 Ω resistor must be placed in series with the capacitor. Tantalum (2.2 μF) is preferred for inherent ESR stability across temperature.
What is the dropout voltage of LP2982IM5-5.0 at 50 mA load?
The LP2982IM5-5.0 has a typical dropout voltage of 120 mV at 50 mA load and 25°C, with a maximum of 225 mV over –40°C to +125°C. This enables regulation from as low as 5.12 V input, critical for extending runtime in Li-ion battery applications nearing end-of-discharge.
How does the ON/OFF pin function on LP2982IM5-5.0?
The ON/OFF pin on LP2982IM5-5.0 is an active-high enable input: ≥1.4 V (min) enables regulation; ≤0.15 V (max) disables output and reduces quiescent current to <1 μA. It must never float - tie to VIN if unused. Input current is <0.01 μA at 0 V, supporting direct GPIO interfacing.
LP2982IM5-5.0 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):
- 0.33V @ 80mA
- Current - Output:
- 50mA
- Current - Quiescent (Iq):
- 95 µA
- Current - Supply (Max):
- 1.4 mA
- PSRR:
- 45dB (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
LP2982IM5-5.0 FAQ
1.How can I place an order for LP2982IM5-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2982IM5-5.0 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 LP2982IM5-5.0 reliable?
The price and inventory of LP2982IM5-5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2982IM5-5.0 is usually 5 days.
3.What payment methods are accepted for LP2982IM5-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2982IM5-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2982IM5-5.0?
LP2982IM5-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2982IM5-5.0 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 LP2982IM5-5.0?
For technical support, including LP2982IM5-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2982IM5-5.0 requirements.
6.How does Aetrix verify that LP2982IM5-5.0 is sourced from the original manufacturer or authorized distributors?
All LP2982IM5-5.0 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 LP2982IM5-5.0 meets industry standards.
7.What is the process for return or replacement of LP2982IM5-5.0?
All LP2982IM5-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2982IM5-5.0, 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 LP2982IM5-5.0 part is unused and in its original packaging.
Return procedure for LP2982IM5-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP2982IM5-5.0 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
