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Texas Instruments LP2987IMX-3.0/NOPB
- Part No.:
- LP2987IMX-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2987IMX-3.0/NOPB.pdf
- Description:
- IC REG LINEAR 3V 200MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,923
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Product details
Overview
LP2987IMX-3.0/NOPB from Texas Instruments is a fixed-output 3.0 V, 200 mA ultra-low-dropout linear regulator with programmable power-on reset delay and <2 µA shutdown quiescent current. It uses a vertically integrated PNP process, delivers 180 mV dropout at 200 mA, 0.5% output voltage accuracy (A-grade), and operates across −40°C to +125°C for use in battery-powered portable electronics requiring stable low-noise supply rails.
For engineers reviewing the LP2987IMX-3.0/NOPB datasheet, LP2987IMX-3.0/NOPB pinout, LP2987IMX-3.0/NOPB application, or LP2987IMX-3.0/NOPB equivalent, this page provides verified technical context, SOIC-8 package details, reset timing behavior, ground current vs. load characteristics, and validated alternative options for portable power management designs.
Technical Context
The LP2987IMX-3.0/NOPB implements a precision bandgap reference and PNP pass transistor architecture optimized for micropower operation. Its error comparator monitors output voltage against a 1.23 V internal reference, asserting the open-collector ERROR pin when VOUT drops >5% below nominal - enabling system-level reset signaling.
Power-on reset delay is implemented via an external capacitor on the DELAY pin, charged by a 2.2 µA current source after regulation is established; the ERROR pin transitions high once the DELAY pin voltage reaches 1.23 V. Shutdown control is active-low, with defined turn-on/turn-off thresholds (VH = 1.6 V, VL = 0.18 V) and minimum slew rate requirement (40 mV/µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±0.5% (A-grade) at 25°C; ensures stable core/sensor rail without external feedback components. |
| Max Continuous Output Current | 200 mA; supports moderate-power microcontrollers, RF modules, and analog signal chains in space-constrained designs. |
| Dropout Voltage | 180 mV @ 200 mA (typical); enables regulation from 3.18 V input - critical for single-cell Li-ion or multi-cell alkaline systems. |
| Quiescent Current | <2 µA in shutdown mode; extends battery life in always-on or sleep-mode applications like IoT sensors. |
| Ground Pin Current | 1 mA @ 200 mA load (typical); low parasitic current improves efficiency and simplifies thermal design. |
| Operating Input Range | 2.1 V to 16 V; accommodates wide-input industrial or automotive auxiliary supplies while maintaining regulation. |
| Reset Threshold Accuracy | −5.5% to −3.5% VOUT hysteresis; provides reliable brown-out detection with built-in noise immunity for clean system boot. |
Pinout & Package
LP2987IMX-3.0/NOPB is housed in an 8-pin SOIC (D) surface-mount package (Package Drawing D0008A), with θJ−A = 160°C/W. The package supports standard reflow profiles (MSL Level-1, 260°C peak) and features gull-wing leads for automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BYPASS | Reference bypass node | Not connected on LP2987 (only used on LP2988 for noise reduction); leave unconnected or tie to ground if unused. |
| 2 - DELAY | Reset delay timing input | Accepts external capacitor to set power-on reset duration; charged by 2.2 µA current source after regulation begins. |
| 3 - GROUND | Analog ground reference | Return path for internal bias and error amplifier; must be connected to clean low-impedance PCB ground plane. |
| 4 - INPUT | Unregulated input supply | Accepts 2.1–16 V; requires ≥2.2 µF ceramic/tantalum input capacitor placed within 0.5″ of pin. |
| 5 - SENSE | Output voltage sensing | Internally connected to OUTPUT; used for precision regulation feedback - no external connection required. |
| 6 - OUTPUT | Regulated 3.0 V output | Delivers up to 200 mA; requires ≥4.7 µF output capacitor with appropriate ESR for stability. |
| 7 - SHUTDOWN | Active-low enable control | Drives low (<0.18 V) to disable regulator; must swing above 1.6 V to enable with ≥40 mV/µs slew rate. |
| 8 - ERROR | Open-collector reset flag | Sinks current when VOUT falls >5% below 3.0 V; requires external pull-up for logic-level reset signal generation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 200 mA enables operation from marginal input sources such as aging batteries or low-headroom DC-DC outputs. |
| Programmable power-on reset | Single external capacitor on DELAY pin sets reset timeout - eliminates need for discrete supervisor ICs in portable systems. |
| 0.5% output accuracy (A-grade) | Guaranteed over temperature and load ensures reliable operation of voltage-sensitive peripherals without calibration. |
| Thermal & overcurrent protection | Internally limits power dissipation and output current to prevent damage during fault conditions or transient overload. |
| −40°C to +125°C junction range | Validated performance across extended industrial temperature range supports deployment in harsh environments. |
Applications
| Cellular Phone Power Management | Palmtop Computer Core Rail |
|---|---|
Use Scenario: Regulating 3.0 V supply for baseband processor I/O and memory interface in GSM/3G handsets. IC Role / Device Role / Timing Role: Primary LDO delivering clean, low-noise 3.0 V rail with precise reset assertion during battery insertion or cold start. Use Value: 180 mV dropout preserves operating time from single-cell Li-ion (3.2–4.2 V), while 0.5% accuracy prevents I/O timing violations. |
Use Scenario: Providing stable 3.0 V core voltage to ARM-based application processors in handheld PDAs. IC Role / Device Role / Timing Role: System power supervisor with integrated reset delay, coordinating boot sequence with PMIC sequencing signals. Use Value: Programmable reset delay via DELAY pin replaces discrete RC network, reducing BOM count and board area. |
| Camcorder Sensor Bias Supply | Personal Stereo Audio Codec Rail |
Use Scenario: Generating low-noise 3.0 V bias for CMOS image sensor analog front-end and ADC reference. IC Role / Device Role / Timing Role: Precision analog LDO with minimal ground current variation to avoid coupling noise into sensitive imaging circuitry. Use Value: 1 mA ground current at full load minimizes IR drop in shared ground paths, preserving SNR in video capture chain. |
Use Scenario: Supplying 3.0 V to stereo audio DAC/ADC and headphone amplifier in portable music players. IC Role / Device Role / Timing Role: Low-quiescent LDO supporting dynamic power gating - shuts down during pause mode to extend playback time. Use Value: <2 µA shutdown current reduces standby drain, enabling multi-week battery life in flash-based audio devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC7703IPW | 3.3 V fixed output, 150 mA max, no DELAY pin, higher 250 mV dropout at 150 mA | Lacks programmable reset; suitable only where reset functionality is handled externally | Select when reset timing is managed by MCU or separate supervisor, and 3.3 V (not 3.0 V) rail is acceptable |
| TPS76330DBVR | 3.0 V fixed output, 150 mA, 220 mV dropout @ 150 mA, no DELAY pin, 12 µA quiescent current | No integrated power-on reset; requires external RC or dedicated reset IC for boot coordination | Choose for cost-sensitive designs needing basic 3.0 V regulation without reset integration, accepting higher IQ and lower current capability |
Compared with TLC7703IPW and TPS76330DBVR, LP2987IMX-3.0/NOPB uniquely combines 3.0 V output, 200 mA capability, ultra-low dropout, and hardware-programmable reset - eliminating external components in portable systems requiring coordinated power sequencing.
Availability
LP2987IMX-3.0/NOPB is available at Aetrix Electronics and suitable for cellular phone power management, palmtop computer core rails, camcorder sensor bias supplies, and personal stereo audio codec rails requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LP2987IMX-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 power management technologies, with decades of expertise in precision voltage regulation and low-power system solutions.
The LP2987 series belongs to TI's micropower LDO portfolio, designed specifically for battery-operated portable electronics demanding ultra-low quiescent current, tight output tolerance, and integrated power sequencing features.
FAQ
What is the maximum input voltage rating for LP2987IMX-3.0/NOPB?
The LP2987IMX-3.0/NOPB has an absolute maximum input voltage of +16 V and a recommended operating range of 2.1 V to +16 V. Exceeding 16 V may cause permanent damage. For reliable long-term operation, maintain VIN ≤16 V under all conditions including transients and ripple.
Does LP2987IMX-3.0/NOPB include a bypass pin for noise reduction?
No, the LP2987IMX-3.0/NOPB does not utilize the BYPASS pin for noise filtering - that feature is exclusive to the LP2988 variant. On LP2987IMX-3.0/NOPB, Pin 1 (BYPASS) is not connected internally and should remain unconnected or tied to ground if routing constraints require termination.
How is the power-on reset delay time calculated for LP2987IMX-3.0/NOPB?
The reset delay time TDELAY (in seconds) for LP2987IMX-3.0/NOPB is calculated using CDLY = TDELAY / (5.59 × 10⁵), where CDLY is the capacitor value in farads on the DELAY pin. For example, a 100 nF capacitor yields ~56 ms delay. Maximum recommended CDLY is 1 µF.
What is the shutdown input voltage threshold for LP2987IMX-3.0/NOPB?
The LP2987IMX-3.0/NOPB turns off when the SHUTDOWN pin voltage is below 0.18 V (max) and turns on when above 1.6 V (min). Signals must transition between these thresholds with ≥40 mV/µs slew rate; slow-rising/falling edges in the 0.18–1.6 V range may cause undefined output states.
Can LP2987IMX-3.0/NOPB be used with ceramic output capacitors?
Yes, but only with a series resistor. The LP2987IMX-3.0/NOPB requires minimum ESR for stability; standard ceramic capacitors have too-low ESR and will cause oscillation. Add a 1 Ω resistor in series with the ceramic output capacitor to meet stability requirements while retaining fast transient response.
LP2987IMX-3.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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-SOIC
LP2987IMX-3.0/NOPB FAQ
1.How can I place an order for LP2987IMX-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2987IMX-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 LP2987IMX-3.0/NOPB reliable?
The price and inventory of LP2987IMX-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 LP2987IMX-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2987IMX-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2987IMX-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2987IMX-3.0/NOPB?
LP2987IMX-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2987IMX-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 LP2987IMX-3.0/NOPB?
For technical support, including LP2987IMX-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2987IMX-3.0/NOPB requirements.
6.How does Aetrix verify that LP2987IMX-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2987IMX-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 LP2987IMX-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2987IMX-3.0/NOPB?
All LP2987IMX-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2987IMX-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 LP2987IMX-3.0/NOPB part is unused and in its original packaging.
Return procedure for LP2987IMX-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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