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Texas Instruments LP2987AILD-3.0/NOPB
- Part No.:
- LP2987AILD-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
LP2987AILD-3.0/NOPB.pdf
- Description:
- IC REG LINEAR 3V 200MA 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:995
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Product details
Overview
LP2987AILD-3.0/NOPB from Texas Instruments is a micropower, 200 mA ultra-low-dropout linear voltage regulator with programmable power-on reset delay and 3.0 V fixed output. It features 180 mV dropout at 200 mA, 0.5% output voltage accuracy (A-grade), and operates across −40°C to +125°C junction temperature. Designed for space-constrained portable electronics requiring stable low-noise biasing.
For engineers reviewing the LP2987AILD-3.0/NOPB datasheet, LP2987AILD-3.0/NOPB pinout, LP2987AILD-3.0/NOPB application, or LP2987AILD-3.0/NOPB equivalent, key selection criteria include dropout performance under 200 mA load, reset delay configurability via external capacitor, thermal behavior in WSON-8 package, and compatibility with low-ESR tantalum or ceramic+series-resistor output capacitors.
Technical Context
The LP2987AILD-3.0/NOPB uses a vertically integrated PNP (VIP) pass transistor architecture enabling ultra-low dropout (180 mV @ 200 mA) and low ground current (1 mA @ 200 mA). Its error flag output provides ±5% output voltage monitoring and serves as a power-on reset signal when paired with an external capacitor on the DELAY pin.
Unlike the noise-optimized LP2988 variant, the LP2987AILD-3.0/NOPB lacks a Bypass pin and delivers 100 µVRMS output noise (BW = 300 Hz–50 kHz, 3.3 V output). It supports input voltages from 2.1 V to 16 V and includes overtemperature and overcurrent protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V, ±0.5% tolerance (A-grade) ensures precision biasing for 3.0 V logic and analog circuitry without trimming. |
| Max Output Current | 200 mA continuous, >250 mA peak - sufficient for microcontrollers, sensors, and RF front-ends in portable systems. |
| Dropout Voltage | 180 mV @ 200 mA load - enables regulation from 3.18 V input, critical for single-cell Li-ion or multi-cell alkaline operation. |
| Quiescent Current | <2 µA in shutdown mode - preserves battery life in always-on standby applications like real-time clocks or wake-on-event circuits. |
| Reset Threshold | Output drops ~5% below nominal before ERROR pin asserts low - provides reliable brownout detection for system-level power sequencing. |
| Operating Temp | −40°C to +125°C junction range - qualified for automotive cabin, industrial control, and outdoor embedded environments. |
| Input Voltage Range | 2.1 V to 16 V operating - accommodates wide-input DC-DC pre-regulation or direct connection to unregulated rails. |
Pinout & Package
LP2987AILD-3.0/NOPB is housed in an 8-pin WSON (NGN) surface-mount package (2.0 mm × 2.0 mm, 0.5 mm pitch, exposed thermal pad). This thermally enhanced package delivers improved power dissipation versus SOIC-8 or VSSOP-8 variants and requires PCB thermal vias for optimal junction temperature management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BYPASS) | Not connected (NC) | Unused on LP2987; differs from LP2988 which uses this pin for noise reduction - no bypass capacitor required. |
| 2 (DELAY) | Reset delay timing node | Sinks 2.2 µA current to charge external capacitor; sets power-on reset timeout (TDELAY = CDLY × 5.59×10⁵). |
| 3 (GROUND) | Power return path | Low-impedance ground reference for regulator core and error comparator; connects to exposed thermal pad. |
| 4 (INPUT) | Unregulated input supply | Accepts 2.1–16 V; requires ≥2.2 µF input capacitor placed ≤0.5″ from pin and returned to clean analog ground. |
| 5 (SENSE) | Output voltage feedback | Monitors regulated output via internal resistive divider; enables accurate remote sensing if routed separately from OUTPUT. |
| 6 (OUTPUT) | Regulated 3.0 V output | Delivers up to 200 mA; requires ≥4.7 µF output capacitor with controlled ESR (tantalum recommended or ceramic + 1 Ω series resistor). |
| 7 (SHUTDOWN) | Enable/disable control | Drives low to enter <2 µA shutdown; requires logic-high ≥1.6 V and slew rate ≥40 mV/µs to avoid metastability. |
| 8 (ERROR) | Open-collector fault flag | Pulls low during undervoltage (−5%) or startup delay; requires external pull-up for active-high reset signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 200 mA enables operation from marginal input sources (e.g., aging batteries or post-buck rails). |
| Programmable reset delay | Single external capacitor on DELAY pin sets precise power-on reset timing - eliminates need for discrete RC timers or dedicated supervisor ICs. |
| High accuracy output | ±0.5% (A-grade) over temperature ensures consistent performance for ADC references, sensor excitation, and PLL VCO supplies. |
| Thermal & current protection | Internally limits power dissipation and disables output during overtemperature or short-circuit events - enhances system reliability without external circuitry. |
| Low shutdown current | <2 µA quiescent draw in shutdown extends battery runtime in intermittent-use devices such as IoT endpoints and wearables. |
Applications
| Cellular Phone Power Management | Palmtop/Laptop Subsystem Biasing |
|---|---|
Use Scenario: Supplying 3.0 V to baseband processor I/O banks and PMIC-controlled peripherals during battery-powered operation. IC Role / Device Role / Timing Role: Primary LDO delivering stable 3.0 V rail with programmable reset to coordinate SoC boot sequence after battery insertion or cold start. Use Value: 180 mV dropout allows sustained regulation down to 3.18 V input - extending usable battery capacity by ~12% versus standard 300 mV-dropout regulators. | Use Scenario: Providing clean 3.0 V bias to camera module interface, touch controller, and Bluetooth radio in clamshell-form factor devices. IC Role / Device Role / Timing Role: Secondary LDO with ERROR flag tied to system supervisor to trigger graceful shutdown when main 3.3 V rail collapses. Use Value: ±0.5% output accuracy prevents false resets during thermal drift; open-collector ERROR pin simplifies wired-OR reset bus integration. |
| Camcorder Image Sensor Bias | Personal Stereo DAC/Codec Supply |
Use Scenario: Powering CMOS image sensor analog front-end and column ADC drivers where low noise and tight voltage tolerance are critical. IC Role / Device Role / Timing Role: Low-noise 3.0 V source with SENSE pin used for Kelvin connection to minimize IR drop errors in high-current pixel readout paths. Use Value: Ground pin current of only 1 mA @ 200 mA minimizes shared-PCB trace voltage offsets that could degrade SNR in analog signal chains. | Use Scenario: Supplying 3.0 V reference and analog core voltage to stereo audio DACs and headphone amplifiers in portable media players. IC Role / Device Role / Timing Role: Precision LDO ensuring stable bias for audio converters; SHUTDOWN pin synchronized with playback state machine to cut power during pause. Use Value: <2 µA shutdown current reduces standby drain to negligible levels - enabling multi-week idle battery life without compromising fast wake-up latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLS850F0EJV50 | Automotive-qualified AEC-Q100 Grade 1, 500 mA output, integrated watchdog timer; larger HTSOIC-8 package. | Designed for engine control modules and ADAS domain controllers requiring functional safety support (ISO 26262 ASIL-B). | Select when automotive qualification, higher current, or built-in supervision is required - not drop-in due to different pinout and enable logic. |
| TPS7A2030PDQNR | Lower IQ (65 nA), 300 mA output, 165 mV dropout @ 300 mA; X2SON-4 package (no EN/ERROR pins). | Optimized for ultra-low-power always-on nodes (e.g., RTC, sensor hubs); lacks reset delay and fault flag functionality. | Choose for minimal footprint and lowest quiescent current where reset signaling and precision monitoring are unnecessary. |
Compared with TLS850F0EJV50 and TPS7A2030PDQNR, the LP2987AILD-3.0/NOPB uniquely balances programmable reset delay, ±0.5% accuracy, and WSON-8 thermal performance - making it optimal for cost-sensitive industrial and consumer portable designs needing verified brownout coordination without automotive overhead.
Availability
LP2987AILD-3.0/NOPB is available at Aetrix Electronics and suitable for cellular phone power management, palmtop/laptop subsystem biasing, camcorder image sensor bias, and personal stereo DAC/code supply requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LP2987AILD-3.0/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 family was engineered for portable and battery-operated systems demanding ultra-low dropout, micropower shutdown, and integrated power-on reset - targeting design simplification in space- and energy-constrained applications.
FAQ
What is the maximum input voltage rating for LP2987AILD-3.0/NOPB?
The LP2987AILD-3.0/NOPB has an absolute maximum input voltage of +16 V and a specified operating input range of 2.1 V to +16 V. Exceeding 16 V may cause permanent damage. For reliable operation, maintain VIN ≤16 V and ensure transient spikes are clamped externally if present in the system.
Does LP2987AILD-3.0/NOPB require an external capacitor on the BYPASS pin?
No, the LP2987AILD-3.0/NOPB does not use the BYPASS pin - it is a no-connect (NC) terminal. Unlike the LP2988 variant, the LP2987 lacks internal circuitry for noise reduction via bypass capacitance. Therefore, no capacitor is needed or recommended on Pin 1.
How is the power-on reset delay time set for LP2987AILD-3.0/NOPB?
The reset delay time for LP2987AILD-3.0/NOPB is set using an external capacitor connected to the DELAY pin (Pin 2). The delay follows TDELAY = CDLY × 5.59×10⁵, where CDLY is in farads. For example, a 100 nF capacitor yields ~56 ms delay. Maximum recommended CDLY is 1 µF.
What package type and thermal characteristics apply to LP2987AILD-3.0/NOPB?
LP2987AILD-3.0/NOPB uses the 8-pin WSON (NGN) package (2.0 mm × 2.0 mm). Its thermal resistance θJ–A depends on PCB layout - typical values range from 120°C/W to 180°C/W with 4–6 thermal vias under the exposed pad. Refer to TI Application Note AN-1187 for layout guidelines.
Can LP2987AILD-3.0/NOPB be used with ceramic output capacitors?
Yes, but only with a 1 Ω series resistor to ensure minimum ESR for stability. The LP2987AILD-3.0/NOPB requires ≥4.7 µF output capacitance and stable ESR within defined bounds. Ceramic capacitors typically have ESR too low (<50 mΩ), risking oscillation unless damped by the resistor.
LP2987AILD-3.0/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):
- 3V
- 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-3.0/NOPB FAQ
1.How can I place an order for LP2987AILD-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2987AILD-3.0/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-3.0/NOPB reliable?
The price and inventory of LP2987AILD-3.0/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-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2987AILD-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2987AILD-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2987AILD-3.0/NOPB?
LP2987AILD-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2987AILD-3.0/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-3.0/NOPB?
For technical support, including LP2987AILD-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2987AILD-3.0/NOPB requirements.
6.How does Aetrix verify that LP2987AILD-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2987AILD-3.0/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-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2987AILD-3.0/NOPB?
All LP2987AILD-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2987AILD-3.0/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-3.0/NOPB part is unused and in its original packaging.
Return procedure for LP2987AILD-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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