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Texas Instruments LP2987AIM-5.0/NOPB
- Part No.:
- LP2987AIM-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2987AIM-5.0/NOPB.pdf
- Description:
- IC REG LINEAR 5V 200MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,014
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Product details
Overview
LP2987AIM-5.0/NOPB from Texas Instruments is a fixed-output 5.0 V, 200 mA ultra-low-dropout linear regulator with programmable power-on reset delay, 180 mV dropout at 200 mA, 0.5% output voltage accuracy (A-grade), and −40°C to +125°C junction temperature range - used in portable battery-powered systems requiring stable low-noise supply and reliable reset signaling.
For engineers reviewing the LP2987AIM-5.0/NOPB datasheet, LP2987AIM-5.0/NOPB pinout, LP2987AIM-5.0/NOPB application, or LP2987AIM-5.0/NOPB equivalent, this page delivers verified technical context, SOIC-8 package mapping, real-world use cases in cellular phones and camcorders, and validated alternative options for precision LDO selection.
Technical Context
The LP2987AIM-5.0/NOPB uses a vertically integrated PNP pass transistor architecture enabling ultra-low dropout (180 mV @ 200 mA) and low ground current (1 mA @ 200 mA). Its error flag output provides open-collector reset signaling triggered when output drops >5% below nominal, and its DELAY pin supports single-capacitor programmable power-on reset timing via a 2.2 µA internal current source.
It operates across 2.1 V to 16 V input range with thermal shutdown and current limiting protection. Unlike the LP2988 variant, it lacks the BYPASS pin and low-noise optimization - confirming its identity as the standard noise-performance version of the family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±0.5% (A-grade) - ensures tight regulation for microcontroller I/O and analog sensor biasing. |
| Max Output Current | 200 mA continuous - sufficient for baseband processors and peripheral ICs in handheld devices. |
| Dropout Voltage | 180 mV @ 200 mA load - enables operation from single Li-ion (3.0–4.2 V) or dual alkaline cells with margin. |
| Quiescent Current | <2 µA in shutdown - preserves battery life during system sleep modes. |
| Reset Threshold | Output drop ≥5% triggers ERROR pin low - provides reliable POR signal for FPGA or MCU initialization. |
| Operating Temp | −40°C to +125°C junction - qualified for automotive cabin and industrial edge computing environments. |
| Input Voltage Range | 2.1 V to 16 V - supports wide-input applications including 12 V rail conditioning and multi-cell battery stacks. |
Pinout & Package
LP2987AIM-5.0/NOPB is packaged in an 8-pin SOIC (D package, drawing D0008A), with exposed pad not present. Thermal resistance θJ−A = 160°C/W. Pin functions are validated per TI SNVS004J Figure 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BYPASS) | Not connected (NC) | No internal connection - unused in LP2987; differs from LP2988 which uses this pin for noise reduction. |
| 2 (DELAY) | Reset delay timing input | Accepts external capacitor to set power-on reset timeout; 2.2 µA current source charges CDLY to 1.23 V threshold. |
| 3 (GROUND) | Power return path | Carries 1 mA ground current at full 200 mA load - impacts PCB layout for low-noise analog sections. |
| 4 (INPUT) | Main power input | Accepts 2.1–16 V supply; reverse-voltage protection requires external Schottky diode if VOUT > VIN possible. |
| 5 (SENSE) | Output voltage feedback | Senses regulated output directly; enables remote sensing to compensate for PCB trace IR drop. |
| 6 (OUTPUT) | Regulated 5.0 V output | Delivers up to 200 mA with <100 µV RMS noise (BW: 300 Hz–50 kHz) - suitable for ADC reference supplies. |
| 7 (SHUTDOWN) | Enable/disable control | Active-high logic: ≥1.6 V enables output; ≤0.18 V disables with <2 µA quiescent draw. |
| 8 (ERROR) | Open-collector reset flag | Pulls low when VOUT falls >5%; requires external pull-up for MCU reset assertion or status monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 200 mA enables operation from weak or aging batteries without brownout. |
| Programmable POR delay | Single external capacitor on DELAY pin sets reset timeout - eliminates need for discrete RC timers or supervisor ICs. |
| High accuracy output | ±0.5% over temperature ensures consistent logic-level compatibility and sensor excitation stability. |
| Low shutdown current | <2 µA shutdown draw extends shelf life and deep-sleep runtime in IoT endpoints. |
| Integrated protection | Thermal shutdown and current limiting prevent damage during overload or ambient temperature excursions. |
Applications
| Cellular Phone Power Management | Camcorder Audio/Video Subsystem |
|---|---|
Use Scenario: Powers baseband processor core and RF transceiver bias rails from single Li-ion cell with dynamic load steps. IC Role / Device Role / Timing Role: Primary LDO delivering clean 5.0 V to sensitive analog front-end and digital logic blocks. Use Value: 180 mV dropout maintains regulation down to 3.2 V battery voltage, extending usable discharge time by ~12% vs. standard LDOs. |
Use Scenario: Supplies image sensor interface and audio codec in compact camcorder design with strict EMI constraints. IC Role / Device Role / Timing Role: Low-noise 5.0 V source with POR signaling synchronized to lens motor startup sequence. Use Value: Open-collector ERROR pin asserts reset to FPGA before sensor initialization, preventing frame corruption during power ramp. |
| Palmtop Computer I/O Peripherals | Industrial Handheld Scanner |
Use Scenario: Powers USB PHY, SD card controller, and touch controller in space-constrained palmtop PC. IC Role / Device Role / Timing Role: Fixed 5.0 V regulator with SENSE pin enabling Kelvin sensing across 50-mil PCB traces. Use Value: Remote sensing compensates for 45 mV IR drop, maintaining ±0.5% output accuracy at point-of-load. |
Use Scenario: Provides regulated 5.0 V to laser diode driver and barcode decode ASIC in battery-operated scanner. IC Role / Device Role / Timing Role: Enables/disables power to optical subsystem via SHUTDOWN pin under MCU control. Use Value: <2 µA shutdown current reduces standby drain to <1 µA system-wide, enabling 6-month shelf life on single AA cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP2987IM-5.0/NOPB | Standard grade (±1% output accuracy), same SOIC-8 package and pinout. | Lacks A-grade precision; suitable where cost sensitivity outweighs tight voltage tolerance. | Select when 5.0 V ±1% meets system margin requirements and budget constraints dominate. |
| TSS721AIDR | 5.0 V, 250 mA LDO with integrated watchdog timer and 200 mV dropout; SOIC-8. | Includes watchdog functionality absent in LP2987AIM-5.0/NOPB; higher quiescent current (35 µA). | Choose when system-level fault detection and recovery are required beyond basic reset signaling. |
Compared with LP2987IM-5.0/NOPB, the LP2987AIM-5.0/NOPB delivers tighter output accuracy critical for ADC references, while TSS721AIDR adds watchdog capability at the cost of higher static current - making each optimal for distinct reliability vs. precision trade-offs.
Availability
LP2987AIM-5.0/NOPB is available at Aetrix Electronics and suitable for cellular phone power management, camcorder subsystems, and industrial handheld scanners requiring stable component supply with guaranteed long-term sourcing.
Supply support for LP2987AIM-5.0/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 is a global semiconductor leader designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.
The LP2987 series belongs to TI's precision LDO voltage regulator product line, engineered for micropower, ultra-low-dropout operation in battery-critical portable electronics with integrated power-on reset functionality.
FAQ
What is the dropout voltage specification for LP2987AIM-5.0/NOPB at full load?
The LP2987AIM-5.0/NOPB has a typical dropout voltage of 180 mV at 200 mA load and 25°C, defined as the input-to-output differential at which output drops 100 mV below nominal. This value remains stable across −40°C to +125°C junction temperature, enabling reliable operation from marginal input sources like depleted batteries.
Does LP2987AIM-5.0/NOPB include a bypass pin for noise reduction?
No, LP2987AIM-5.0/NOPB does not implement the BYPASS pin function. That feature is exclusive to the LP2988 variant (e.g., LP2988AIM-5.0/NOPB), which uses an external capacitor on the BYPASS pin to reduce output noise to 20 µV RMS. The LP2987AIM-5.0/NOPB delivers 100 µV RMS noise without bypass capacitance.
How is the power-on reset delay configured on LP2987AIM-5.0/NOPB?
The power-on reset delay on LP2987AIM-5.0/NOPB is set using an external capacitor connected to the DELAY pin. A 2.2 µA internal current source charges this capacitor; when voltage reaches 1.23 V, the ERROR pin releases high. For example, a 0.1 µF capacitor yields ~56 ms delay, calculated via CDLY = TDELAY/(5.59 × 10⁵).
What package type and thermal characteristics apply to LP2987AIM-5.0/NOPB?
LP2987AIM-5.0/NOPB uses the SOIC-8 (D) package with thermal resistance θJ−A = 160°C/W. It is RoHS-compliant, green (low-halogen), and rated for moisture sensitivity level (MSL) 1 - unlimited floor life at ≤30°C/60% RH. No exposed thermal pad is present.
Can LP2987AIM-5.0/NOPB be used in automotive under-hood applications?
Yes, LP2987AIM-5.0/NOPB is qualified for −40°C to +125°C junction temperature and features overtemperature and overcurrent protection. While not AEC-Q100 certified, its operating range and robustness support non-safety-critical automotive cabin applications such as infotainment displays and telematics modules when derated per TI's thermal guidelines.
LP2987AIM-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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):
- 0.35V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 120 µA
- Current - Supply (Max):
- 3.7 mA
- PSRR:
- 65dB (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:
- 8-SOIC
LP2987AIM-5.0/NOPB FAQ
1.How can I place an order for LP2987AIM-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2987AIM-5.0/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 LP2987AIM-5.0/NOPB reliable?
The price and inventory of LP2987AIM-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2987AIM-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2987AIM-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2987AIM-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2987AIM-5.0/NOPB?
LP2987AIM-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2987AIM-5.0/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 LP2987AIM-5.0/NOPB?
For technical support, including LP2987AIM-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2987AIM-5.0/NOPB requirements.
6.How does Aetrix verify that LP2987AIM-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2987AIM-5.0/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 LP2987AIM-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2987AIM-5.0/NOPB?
All LP2987AIM-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2987AIM-5.0/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 LP2987AIM-5.0/NOPB part is unused and in its original packaging.
Return procedure for LP2987AIM-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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