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Texas Instruments LP2987IMX-5.0
- Part No.:
- LP2987IMX-5.0
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2987IMX-5.0.pdf
- Description:
- IC REG LINEAR 5V 200MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,795
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Product details
Overview
LP2987IMX-5.0 from Texas Instruments is a fixed-output, 200 mA ultra-low-dropout linear voltage regulator with programmable power-on reset delay, 5.0 V output, 0.5% initial accuracy (A-grade), 180 mV dropout at 200 mA, and SOIC-8 package - used in portable battery-powered systems requiring stable low-noise supply and reliable power sequencing.
For engineers reviewing the LP2987IMX-5.0 datasheet, LP2987IMX-5.0 pinout, LP2987IMX-5.0 application, or LP2987IMX-5.0 equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternatives, and supply-ready procurement guidance - all grounded in TI's official SNVS004J revision J documentation.
Technical Context
The LP2987IMX-5.0 uses a vertically integrated PNP pass transistor architecture to achieve 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 doubles as a power-on reset signal when paired with an external capacitor on the DELAY pin.
It integrates shutdown control (active-low, 0.18 V threshold), bypass-capable noise reduction (though Bypass pin functionality is exclusive to LP2988 variants), and internal overtemperature/overcurrent protection. The SOIC-8 package has θJ−A = 160°C/W and supports operation from −40°C to +125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V, ±0.5% tolerance (A-grade) at 25°C - ensures precise biasing for 5 V logic, ADC references, and analog circuitry without external feedback. |
| Max Output Current | 200 mA continuous, >250 mA peak - supports moderate-power microcontrollers, sensors, and interface ICs in space-constrained portable designs. |
| Dropout Voltage | 180 mV @ 200 mA load (typical) - enables regulation from 5.18 V input, critical for single-cell Li-ion or multi-cell alkaline systems near end-of-life. |
| Quiescent Current | <2 μA in shutdown mode - preserves battery life in always-on standby or wake-on-event applications. |
| Power-On Reset Delay | Programmable via single external capacitor on DELAY pin - provides configurable system initialization timing without additional supervisor ICs. |
| Operating Input Range | 2.1 V to 16 V - accommodates wide-input industrial rails and legacy 12 V systems while maintaining regulation down to low VIN. |
| Thermal Protection | Integrated overtemperature shutdown - prevents thermal runaway during sustained overload or poor PCB heatsinking. |
Pinout & Package
LP2987IMX-5.0 is supplied in an 8-pin SOIC (D) surface-mount package (Package Drawing D0008A), with 1.27 mm pitch, 4.9 mm × 3.9 mm body, and exposed pad not present. Thermal resistance θJ−A = 160°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BYPASS | Reference bypass node | Not functional on LP2987 (only LP2988); leave unconnected or tie to ground per TI recommendation. |
| 2 - DELAY | Reset delay timing input | Accepts external capacitor to set power-on reset timeout; 2.2 µA internal current source charges CDLY to 1.23 V threshold. |
| 3 - GROUND | Analog ground reference | Return path for regulator core, error comparator, and shutdown circuitry - must connect to clean analog ground plane. |
| 4 - INPUT | Main input supply rail | Accepts 2.1–16 V DC; requires ≥2.2 µF ceramic/tantalum input capacitor placed ≤0.5″ from pin. |
| 5 - SENSE | Output voltage sensing node | Internally connected to OUTPUT on LP2987IMX-5.0; use for remote sensing only if external trace resistance exceeds 50 mΩ. |
| 6 - OUTPUT | Regulated 5.0 V output | Delivers up to 200 mA; requires ≥4.7 µF output capacitor with ESR in stable region per TI Figure 44. |
| 7 - SHUTDOWN | Active-low enable control | Pull ≤0.18 V to disable regulator (IQ < 2 µA); pull ≥1.4 V to enable; slew rate ≥40 mV/µs required. |
| 8 - ERROR | Open-collector fault/reset flag | Asserts low when VOUT drops >5% below 5.0 V; also serves as power-on reset signal after DELAY timeout. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 200 mA enables operation from marginal input sources (e.g., 5.18 V min), extending usable battery range. |
| Programmable power-on reset | Single external capacitor on DELAY pin eliminates need for discrete supervisor ICs - reduces BOM count and board area. |
| 0.5% output accuracy (A-grade) | Meets tight tolerance requirements for precision analog front-ends, reference supplies, and 5 V MCU cores without calibration. |
| Low ground pin current | 1 mA @ 200 mA load minimizes wasted input power and improves efficiency vs. standard LDOs with higher IGND. |
| Integrated protection | Overtemperature and overcurrent shutdown prevent damage during fault conditions - no external circuitry needed. |
Applications
| Cellular Phone Power Management | Palmtop/Laptop Subsystem Supply |
|---|---|
|
Use Scenario: Regulating main 5 V rail for baseband processor I/O, SIM interface, and audio codec in GSM/UMTS handsets. IC Role / Device Role / Timing Role: Primary LDO delivering clean, sequenced 5 V supply with integrated POR for controlled boot. Use Value: Eliminates external reset generator; 180 mV dropout extends talk time by enabling regulation down to 5.18 V from aging Li-ion cells. |
Use Scenario: Providing isolated 5 V supply to USB peripheral controllers, card readers, or touchpad interfaces in clamshell devices. IC Role / Device Role / Timing Role: Secondary LDO with shutdown control for dynamic power gating of non-critical subsystems. Use Value: <2 μA shutdown current preserves battery during suspend; ±0.5% accuracy ensures USB compliance under varying load. |
| Camcorder Image Sensor Bias | Personal Stereo DAC Reference |
|
Use Scenario: Supplying low-noise 5 V bias to CMOS image sensor analog blocks and column amplifiers. IC Role / Device Role / Timing Role: Precision analog LDO with POR coordination to synchronize sensor initialization with system boot. Use Value: 0.5% output tolerance maintains consistent pixel response; DELAY pin enables deterministic sensor startup timing. |
Use Scenario: Generating stable 5 V reference for stereo DACs and headphone amplifiers in portable audio players. IC Role / Device Role / Timing Role: Low-drift, low-ripple LDO serving as analog supply and reset source for audio subsystem. Use Value: Ground current stability (1 mA @ 200 mA) minimizes supply-induced distortion; built-in POR prevents pop/click at power-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP2987IMM-5.0/NOPB | VSSOP-8 package (3.0 mm × 3.0 mm), θJ−A = 200°C/W, same electrical specs and pinout. | Better suited for high-density PCB layouts where SOIC footprint is prohibitive; thermal performance slightly reduced. | Select for space-constrained designs; verify thermal margin with 200°C/W θJ−A and expected ambient. |
| LP2988IMX-5.0/NOPB | Includes functional BYPASS pin (0.01 µF reduces output noise to 20 µVRMS), otherwise identical pinout and regulation specs. | Required for ultra-low-noise applications (e.g., RF receivers, high-resolution ADCs); adds one passive component. | Choose when output noise <25 µVRMS is mandatory; BYPASS pin unused on LP2987IMX-5.0 renders it unsuitable for such cases. |
Compared with LP2987IMX-5.0, LP2987IMM-5.0 offers identical regulation in a smaller VSSOP package but with higher thermal resistance, while LP2988IMX-5.0 adds measurable noise reduction capability via the BYPASS pin - making it the only true functional upgrade for noise-sensitive signal chains.
Availability
LP2987IMX-5.0 is available at Aetrix Electronics and suitable for cellular phone power management, palmtop/laptop subsystem supply, camcorder image sensor bias, and personal stereo DAC reference applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for LP2987IMX-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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of LDO design heritage and automotive-grade reliability validation.
The LP2987 series belongs to TI's precision micropower LDO family, engineered for battery-powered portable electronics demanding ultra-low dropout, accurate output, and integrated power sequencing - not general-purpose regulation.
FAQ
What is the maximum input voltage rating for LP2987IMX-5.0?
The LP2987IMX-5.0 has an absolute maximum input voltage of +16 V and a recommended operating range of 2.1 V to +16 V. Exceeding 16 V risks permanent damage. For reliable long-term operation, maintain VIN ≤15.5 V with appropriate derating margin, especially at elevated temperatures.
Does LP2987IMX-5.0 support remote voltage sensing?
Yes - LP2987IMX-5.0 includes a dedicated SENSE pin (Pin 5) that can be routed to the load to compensate for IR drop in output traces. When used, SENSE must be connected directly to the load-side of the output capacitor; unused SENSE should be tied to OUTPUT per TI guidelines.
Can the ERROR pin of LP2987IMX-5.0 drive a microcontroller GPIO directly?
Yes - the ERROR pin is an open-collector NPN output rated for 300 µA sink current and 220 mV low-level voltage. It requires an external pull-up resistor (typically 10 kΩ to 5 V or 3.3 V) and is fully compatible with standard MCU GPIO inputs for reset or fault monitoring.
Is a bypass capacitor required on the BYPASS pin of LP2987IMX-5.0?
No - the BYPASS pin is not functional on LP2987IMX-5.0 (it is reserved for LP2988 variants only). TI documentation explicitly states it should be left unconnected or tied to ground. Adding a capacitor here provides no benefit and may risk unintended behavior.
What is the minimum output capacitance required for stable operation of LP2987IMX-5.0?
The minimum output capacitance is 4.7 µF, with specified ESR range dependent on load current and output voltage. For 5.0 V operation, TI's Figure 44 defines the stable ESR envelope - e.g., 0.15 Ω to 1.2 Ω at 200 mA. Tantalum capacitors are preferred; ceramic types require a 1 Ω series resistor to ensure stability.
LP2987IMX-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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):
- 0.35V @ 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
LP2987IMX-5.0 FAQ
1.How can I place an order for LP2987IMX-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2987IMX-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 LP2987IMX-5.0 reliable?
The price and inventory of LP2987IMX-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 LP2987IMX-5.0 is usually 5 days.
3.What payment methods are accepted for LP2987IMX-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2987IMX-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2987IMX-5.0?
LP2987IMX-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2987IMX-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 LP2987IMX-5.0?
For technical support, including LP2987IMX-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2987IMX-5.0 requirements.
6.How does Aetrix verify that LP2987IMX-5.0 is sourced from the original manufacturer or authorized distributors?
All LP2987IMX-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 LP2987IMX-5.0 meets industry standards.
7.What is the process for return or replacement of LP2987IMX-5.0?
All LP2987IMX-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2987IMX-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 LP2987IMX-5.0 part is unused and in its original packaging.
Return procedure for LP2987IMX-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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