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Texas Instruments LP2987AIM-3.0/NOPB
- Part No.:
- LP2987AIM-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2987AIM-3.0/NOPB.pdf
- Description:
- IC REG LINEAR 3V 200MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,417
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Product details
Overview
LP2987AIM-3.0/NOPB from Texas Instruments is a fixed-output, 200 mA ultra-low-dropout linear voltage regulator with programmable power-on reset delay and shutdown control, delivering 3.0 V ±0.5% (A-grade) output at up to 200 mA load, 180 mV dropout at full load, and <2 µA quiescent current in shutdown - deployed in battery-powered portable electronics requiring stable low-noise supply and reliable system initialization.
For engineers reviewing the LP2987AIM-3.0/NOPB datasheet, LP2987AIM-3.0/NOPB pinout, LP2987AIM-3.0/NOPB application, or LP2987AIM-3.0/NOPB equivalent, key selection criteria include its SOIC-8 package compatibility, 3.0 V precision output with 0.5% tolerance, integrated reset delay via single external capacitor, and thermal/overcurrent protection for embedded power management in space-constrained designs.
Technical Context
The LP2987AIM-3.0/NOPB uses a vertically integrated PNP (VIP) pass transistor architecture enabling ultra-low dropout (180 mV @ 200 mA) and low ground pin current (1 mA @ 200 mA). Its error comparator monitors output voltage against an internal 1.23 V reference, asserting the open-collector ERROR pin when VOUT drops >5% below nominal.
Power-on reset delay is implemented by charging an external capacitor on the DELAY pin using a 2.2 µA current source; the ERROR pin transitions high once the DELAY pin voltage reaches 1.23 V. Shutdown is controlled via a logic-level input that draws <1 µA at 0 V and supports 1.4 V turn-on threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±0.5% (A-grade) at 25°C; maintains regulation across −40°C to +125°C junction temperature range. |
| Max Output Current | 200 mA continuous; peak output current exceeds 250 mA before foldback activation. |
| Dropout Voltage | 180 mV @ 200 mA load (typical); enables operation with VIN as low as 3.18 V while sustaining 3.0 V output. |
| Quiescent Current | <2 µA in shutdown mode; 1 mA typical ground current at full 200 mA load. |
| Reset Threshold | ERROR pin asserts low when VOUT falls ≥5% below 3.0 V (i.e., ≤2.85 V); hysteresis of 2.0% prevents chatter. |
| Input Voltage Range | 2.1 V to 16 V operating; absolute max survival rating is −0.3 V to +16 V. |
| Shutdown Threshold | Turns off when SHUTDOWN pin voltage <0.18 V (max); turns on when >1.4 V (min). |
Pinout & Package
LP2987AIM-3.0/NOPB is supplied in an 8-pin SOIC (D) surface-mount package per drawing D0008A, with standard 1.27 mm lead pitch and JEDEC MS-012AC footprint. Thermal resistance θJ−A = 160°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BYPASS | Reference bypass node | Not used on LP2987 (only present on LP2988); leave unconnected or float. |
| 2 - DELAY | Reset delay timing node | Accepts external capacitor to set power-on reset timeout; charged by 2.2 µA current source. |
| 3 - GROUND | Analog ground reference | Return path for internal circuitry and output current; must connect to clean analog ground plane. |
| 4 - INPUT | Regulator input supply | Accepts 2.1–16 V DC; requires ≥2.2 µF input capacitor placed within 12.7 mm of pin. |
| 5 - SENSE | Output voltage feedback | Monitors regulated output via internal resistive divider; connects directly to VOUT for standard configuration. |
| 6 - OUTPUT | Regulated output terminal | Delivers 3.0 V ±0.5% at up to 200 mA; requires ≥4.7 µF output capacitor with appropriate ESR. |
| 7 - SHUTDOWN | Enable/disable control | Active-high logic input; drives regulator into <2 µA sleep state when pulled low. |
| 8 - ERROR | Open-collector fault flag | Sinks current when VOUT <2.85 V or during power-up delay; requires external pull-up resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 200 mA enables use in single-cell Li-ion or multi-cell alkaline systems where input margin is tight. |
| Programmable power-on reset | Single external capacitor on DELAY pin sets reset timeout without external timers or microcontroller intervention. |
| High accuracy output | 0.5% initial tolerance (A-grade) reduces need for post-regulation trimming in precision analog or RF subsystems. |
| Low-noise operation | 100 µVRMS output noise (300 Hz–50 kHz) supports noise-sensitive analog circuits like ADC references or audio codecs. |
| Integrated protection | Thermal shutdown and current limiting prevent damage during overload, short-circuit, or high ambient conditions. |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
|
Use Scenario: Battery-powered wearable ECG sensor with analog front-end and BLE radio requiring stable 3.0 V rail and deterministic power-up sequencing. IC Role / Device Role / Timing Role: Primary LDO supplying analog signal chain and digital core; ERROR pin triggers MCU reset until regulated voltage stabilizes. Use Value: 0.5% output accuracy ensures consistent ADC reference scaling; 180 mV dropout extends usable battery life down to 3.18 V input. |
Use Scenario: Remote environmental monitor with LoRaWAN transceiver, temperature/humidity sensor, and microcontroller operating from primary lithium battery. IC Role / Device Role / Timing Role: System power supervisor providing clean 3.0 V and synchronized reset signal to MCU and peripherals during cold start. Use Value: Programmable reset delay via DELAY pin eliminates need for external RC timer; <2 µA shutdown current enables multi-year battery life in sleep mode. |
| Automotive Cabin Control Modules | Point-of-Sale Terminal Power Management |
|
Use Scenario: Non-safety-critical infotainment sub-module powered from 5 V vehicle bus, requiring isolated 3.0 V for touch controller and display interface ICs. IC Role / Device Role / Timing Role: Secondary LDO with reverse-voltage protection awareness; ERROR flag signals MCU if main 5 V rail sags below regulation. Use Value: −40°C to +125°C operating range meets automotive under-hood ambient requirements; 16 V max input withstands load-dump transients. |
Use Scenario: Handheld payment terminal with smart card reader, EMV chip, and secure element needing precise 3.0 V supply and guaranteed boot integrity. IC Role / Device Role / Timing Role: Power-good supervisor generating hardware reset pulse to secure element and application processor upon power application. Use Value: Open-collector ERROR output interfaces directly with 1.8–5 V logic families; 5% reset threshold ensures robust detection of brownout events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP2985AIM-3.0/NOPB | 150 mA rated output; 170 mV dropout @ 150 mA; no DELAY or ERROR pins; smaller SOT-23-5 package. | Lacks power-on reset functionality and fault reporting; suited for simpler point-of-load regulation without sequencing needs. | Select when board space is critical and reset signaling is handled externally or not required. |
| TLC7703IPW | 3 V fixed output; 200 mA; includes built-in 200 ms reset delay (non-programmable); no shutdown pin; 20 µA quiescent current. | Fixed delay eliminates external capacitor but offers no user adjustment; higher IQ limits ultra-low-power use cases. | Select when deterministic, factory-set reset timing suffices and shutdown control is unnecessary. |
Compared with LP2985AIM-3.0/NOPB, the LP2987AIM-3.0/NOPB provides higher current capability and integrated reset sequencing; compared with TLC7703IPW, it offers adjustable delay and lower quiescent current, making it preferable for battery-sensitive designs requiring flexible power-up control.
Availability
LP2987AIM-3.0/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, automotive cabin modules, and point-of-sale terminals requiring stable component supply with guaranteed long-term sourcing.
Supply support for LP2987AIM-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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and consumer markets.
The LP2987 series belongs to TI's precision micropower LDO portfolio, designed specifically for battery-operated portable electronics demanding ultra-low dropout, high accuracy, and integrated power-management features like programmable reset delay.
FAQ
What is the output voltage tolerance of the LP2987AIM-3.0/NOPB over temperature?
The LP2987AIM-3.0/NOPB is an "A-grade" device with initial output voltage tolerance of ±0.5% at 25°C. Over the full −40°C to +125°C junction temperature range, total variation remains within ±0.8% of nominal 3.0 V, as specified in the Electrical Characteristics table under ΔVO conditions.
Can the LP2987AIM-3.0/NOPB be used without connecting the DELAY pin?
Yes - the DELAY pin may be left unconnected or tied to GROUND if power-on reset functionality is not required. When unused, the ERROR pin will still assert low during undervoltage conditions (VOUT <2.85 V), but no timed reset delay will occur at startup.
Does the LP2987AIM-3.0/NOPB require an external bypass capacitor on the BYPASS pin?
No - the BYPASS pin is reserved for the LP2988 variant only. The LP2987AIM-3.0/NOPB does not utilize this pin; it should be left unconnected or floating. Connecting a capacitor here has no functional effect and is not recommended.
What is the minimum input voltage needed for the LP2987AIM-3.0/NOPB to regulate 3.0 V at 200 mA?
The LP2987AIM-3.0/NOPB requires a minimum input voltage of 3.18 V to maintain 3.0 V output at 200 mA load, based on its typical 180 mV dropout voltage. At lighter loads (e.g., 1 mA), dropout drops to 1 mV, allowing regulation from as low as 3.001 V.
How does the ERROR pin behave during normal operation and fault conditions?
The ERROR pin is an open-collector output that remains high (via external pull-up) during normal regulation. It pulls low when VOUT drops ≥5% below 3.0 V (≤2.85 V) or during the power-on reset delay period - providing both undervoltage detection and hardware reset signaling in a single pin.
LP2987AIM-3.0/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):
- 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-SOIC
LP2987AIM-3.0/NOPB FAQ
1.How can I place an order for LP2987AIM-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2987AIM-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 LP2987AIM-3.0/NOPB reliable?
The price and inventory of LP2987AIM-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 LP2987AIM-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2987AIM-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2987AIM-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2987AIM-3.0/NOPB?
LP2987AIM-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2987AIM-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 LP2987AIM-3.0/NOPB?
For technical support, including LP2987AIM-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2987AIM-3.0/NOPB requirements.
6.How does Aetrix verify that LP2987AIM-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2987AIM-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 LP2987AIM-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2987AIM-3.0/NOPB?
All LP2987AIM-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2987AIM-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 LP2987AIM-3.0/NOPB part is unused and in its original packaging.
Return procedure for LP2987AIM-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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