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Texas Instruments LP2987AILD-5.0/NOPB
- Part No.:
- LP2987AILD-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
LP2987AILD-5.0/NOPB.pdf
- Description:
- IC REG LINEAR 5V 200MA 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,085
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Product details
Overview
LP2987AILD-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 operating junction temperature. It serves as a precision local power supply in battery-powered portable electronics requiring stable low-noise voltage under varying load and input conditions.
For engineers reviewing the LP2987AILD-5.0/NOPB datasheet, LP2987AILD-5.0/NOPB pinout, LP2987AILD-5.0/NOPB application, or LP2987AILD-5.0/NOPB equivalent, key selection criteria include its WSON-8 package thermal performance, shutdown-controlled micropower sleep mode (<2 µA), integrated error flag/reset functionality, and single-capacitor programmable POR delay - all critical for space-constrained, low-quiescent-power embedded systems.
Technical Context
The LP2987AILD-5.0/NOPB uses a vertically integrated PNP (VIP) pass transistor architecture enabling ultra-low dropout and low ground pin current (1 mA @ 200 mA). Its internal bandgap reference and error amplifier deliver tight regulation across line, load, and temperature.
It integrates a dedicated DELAY pin current source (2.2 µA typical) for external capacitor-based power-on reset timing and an open-collector ERROR pin that asserts low when output drops >5% below nominal - supporting system-level reset sequencing without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±0.5% (A-grade) at 25°C; ensures compatibility with 5 V logic and analog circuitry requiring tight tolerance. |
| Max Output Current | 200 mA continuous; supports moderate-power microcontrollers, sensors, and interface ICs in portable devices. |
| Dropout Voltage | 180 mV @ 200 mA load (typical); enables operation down to VIN = 5.18 V, extending battery runtime in single-cell Li-ion or multi-cell alkaline systems. |
| Quiescent Current | <2 µA in shutdown mode; reduces standby power loss in always-on or wake-on-event applications. |
| Power-On Reset Delay | Programmable via external capacitor on DELAY pin (CDLY = TDELAY / 5.59×10⁵); provides configurable system initialization timing without additional timers. |
| Operating Temp Range | −40°C to +125°C junction temperature; qualified for automotive cabin, industrial control, and ruggedized portable equipment. |
| Package | 8-pin WSON (NGN), 2.0 mm × 2.0 mm, 0.65 mm pitch; enables high-density PCB layouts with improved thermal resistance vs. SOIC-8. |
Pinout & Package
LP2987AILD-5.0/NOPB is housed in an 8-pin WSON (NGN) surface-mount package with exposed thermal pad. The package measures 2.0 mm × 2.0 mm × 0.8 mm and is RoHS-compliant with Sn lead finish and MSL Level-3 rating (260°C peak reflow, 168-hour floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BYPASS | Reference bypass node | Not used on LP2987 (only present on LP2988); left unconnected or tied to ground per layout best practice. |
| DELAY | Reset delay timing input | Sinks 2.2 µA current to charge external capacitor; sets power-on reset timeout duration (e.g., 100 ms with 0.18 µF). |
| GROUND | Power return path | Low-impedance ground connection for regulator core and error comparator; must be routed to clean analog ground plane. |
| INPUT | Main power input | Accepts 2.1 V to 16 V DC; requires ≥2.2 µF input capacitor within 0.5″ of pin for stability and transient response. |
| SENSE | Output voltage feedback | Monitors regulated output via internal resistive divider; connects directly to VOUT for standard configuration (no remote sense). |
| OUTPUT | Regulated power output | Delivers 5.0 V ±0.5% to load; requires ≥4.7 µF output capacitor with appropriate ESR (e.g., 1–10 Ω for 5 V version). |
| SHUTDOWN | Enable/disable control | Active-high logic input; drives high (>1.4 V) to enable, low (<0.18 V) to enter <2 µA shutdown state. |
| ERROR | Open-collector fault flag | Asserts low when VOUT falls >5% below 5.0 V; requires external pull-up resistor to generate system reset signal. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 200 mA enables operation with minimal headroom - critical for single-cell battery systems where every millivolt extends runtime. |
| Programmable POR delay | Single external capacitor on DELAY pin eliminates need for discrete RC timer or dedicated reset IC, reducing BOM count and board area. |
| High-accuracy output | 0.5% initial tolerance (A-grade) minimizes need for post-regulation trimming or margining in precision analog and ADC reference circuits. |
| Micropower shutdown | <2 µA quiescent current in shutdown mode supports long-term storage and ultra-low-power wake-on-interrupt designs. |
| Integrated error flag | Open-collector ERROR pin provides direct interface to microcontroller reset inputs or FPGA configuration logic without level-shifting. |
Applications
| Cellular Phone Power Management | Industrial Sensor Node |
|---|---|
|
Use Scenario: Supplying 5 V to baseband processor, RF transceiver, and display driver in GSM/3G handset during active and sleep modes. IC Role / Device Role / Timing Role: Primary LDO delivering stable 5 V rail with fast load transient response and programmable power-up sequencing. Use Value: 180 mV dropout extends usable battery range by ~30 minutes at end-of-discharge; shutdown mode cuts leakage to sub-µA during deep sleep. |
Use Scenario: Powering low-power MCU, MEMS accelerometer, and LoRaWAN transceiver in battery-operated factory-floor sensor node. IC Role / Device Role / Timing Role: Local 5 V regulator with POR delay synchronized to MCU boot sequence and ERROR flag tied to watchdog input. Use Value: 0.5% output accuracy ensures consistent ADC reference and sensor biasing; −40°C to +125°C rating guarantees operation in uncontrolled environments. |
| Medical Portable Monitor | Automotive Infotainment Accessory |
|
Use Scenario: Providing clean 5 V supply to ECG front-end amplifier, OLED display controller, and Bluetooth module in handheld patient monitor. IC Role / Device Role / Timing Role: Low-noise, precision LDO with error flag monitoring supply integrity during critical measurement cycles. Use Value: Low ground pin current (1 mA @ 200 mA) minimizes IR drop in shared ground paths; integrated reset prevents firmware lockup on brownout. |
Use Scenario: Regulating 5 V for USB host controller, touch screen controller, and audio codec in aftermarket car stereo add-on module. IC Role / Device Role / Timing Role: Input-tolerant (up to 16 V) LDO handling automotive battery transients while maintaining POR coordination with main SoC. Use Value: Wide input range (2.1–16 V) accommodates cold-crank (6.5 V) and load-dump (≥14 V) events; WSON package withstands vibration and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLS850F0TESK | 5 V, 500 mA, integrated watchdog and enable, higher IQ (25 µA), TO-252-5 package | Targeted at automotive body electronics with ASIL-B support; lacks programmable POR delay | Choose for automotive-grade reliability and functional safety features; avoid if POR timing control or WSON footprint is required. |
| TPS7A2050PDBVR | 5 V, 300 mA, 6.5 µA IQ, ultra-low noise (7 µVRMS), SOT-23-5 package | Optimized for noise-sensitive analog/RF loads; no ERROR flag or DELAY pin | Prefer for ultra-low-noise applications like audio codecs or precision ADCs; not suitable for reset sequencing or fault monitoring. |
Compared with TLS850F0TESK and TPS7A2050PDBVR, the LP2987AILD-5.0/NOPB uniquely combines programmable power-on reset, integrated error flag, and WSON-8 thermal efficiency in a 200 mA A-grade LDO - making it optimal for cost-sensitive, space-constrained portable systems needing coordinated startup and brownout detection.
Availability
LP2987AILD-5.0/NOPB is available at Aetrix Electronics and suitable for cellular phone power management, industrial sensor nodes, medical portable monitors, and automotive infotainment accessories requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LP2987AILD-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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision power management ICs.
The LP2987 series was designed for micropower, ultra-low-dropout regulation in portable and battery-operated systems - emphasizing accuracy, thermal efficiency, and integrated system-level functions like POR and fault reporting.
FAQ
What is the maximum input voltage rating for LP2987AILD-5.0/NOPB?
The LP2987AILD-5.0/NOPB has an absolute maximum input supply voltage of +16 V and a recommended operating range of 2.1 V to +16 V. Exceeding 16 V risks permanent damage. For automotive applications with load-dump transients, external clamping or pre-regulation is advised to keep VIN within safe limits during LP2987AILD-5.0/NOPB operation.
Does LP2987AILD-5.0/NOPB support remote sensing?
No, LP2987AILD-5.0/NOPB does not support true remote sensing. Its SENSE pin is internally connected to the OUTPUT pin in standard configuration and is intended for local feedback only. Layout best practice requires short, low-impedance routing between OUTPUT and SENSE to maintain regulation accuracy under PCB trace resistance.
How is the power-on reset delay time calculated for LP2987AILD-5.0/NOPB?
The delay time TDELAY (in seconds) is calculated using CDLY = TDELAY / 5.59×10⁵, where CDLY is the external capacitor value in farads. For example, a 0.22 µF capacitor yields ~123 ms delay. The DELAY pin sources 2.2 µA, charging CDLY until it reaches 1.23 V, at which point the ERROR pin releases.
Can LP2987AILD-5.0/NOPB be used without connecting the SHUTDOWN pin?
Yes - if shutdown functionality is unused, the SHUTDOWN pin must be tied directly to INPUT (VIN) to ensure the regulator remains enabled. Leaving it floating may cause erratic behavior due to noise coupling; TI explicitly recommends this tie-high connection in the datasheet's Application Hints section.
What is the thermal resistance (θJ−A) of the WSON package used by LP2987AILD-5.0/NOPB?
The WSON-8 (NGN) package for LP2987AILD-5.0/NOPB has a θJ−A of approximately 120°C/W with standard JEDEC 2-layer board layout (2 oz copper, 1 in² thermal pad). This value improves significantly with added thermal vias and larger copper pours - unlike SOIC-8 (160°C/W) or VSSOP-8 (200°C/W), the WSON offers superior thermal performance for high-current or high-ambient applications.
LP2987AILD-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-WSON (4x4)
LP2987AILD-5.0/NOPB FAQ
1.How can I place an order for LP2987AILD-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2987AILD-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 LP2987AILD-5.0/NOPB reliable?
The price and inventory of LP2987AILD-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 LP2987AILD-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2987AILD-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2987AILD-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2987AILD-5.0/NOPB?
LP2987AILD-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2987AILD-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 LP2987AILD-5.0/NOPB?
For technical support, including LP2987AILD-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2987AILD-5.0/NOPB requirements.
6.How does Aetrix verify that LP2987AILD-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2987AILD-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 LP2987AILD-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2987AILD-5.0/NOPB?
All LP2987AILD-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2987AILD-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 LP2987AILD-5.0/NOPB part is unused and in its original packaging.
Return procedure for LP2987AILD-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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