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Texas Instruments LP2987IMMX-5.0/NOPB
- Part No.:
- LP2987IMMX-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LP2987IMMX-5.0/NOPB.pdf
- Description:
- IC REG LINEAR 5V 200MA 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,815
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Product details
Overview
LP2987IMMX-5.0/NOPB from Texas Instruments is a fixed-output 5.0 V, 200 mA micropower 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 range. It serves as a precision local power supply in battery-powered portable electronics requiring stable low-noise voltage regulation.
For engineers reviewing the LP2987IMMX-5.0/NOPB datasheet, LP2987IMMX-5.0/NOPB pinout, LP2987IMMX-5.0/NOPB application, or LP2987IMMX-5.0/NOPB equivalent, key selection criteria include dropout performance under 200 mA load, reset delay configurability via external capacitor, shutdown quiescent current <2 µA, and SOIC-8/VSSOP-8 package compatibility for space-constrained designs.
Technical Context
The LP2987IMMX-5.0/NOPB uses a vertically integrated PNP (VIP) pass transistor architecture enabling ultra-low dropout and low ground pin current across load range. Its error comparator monitors output voltage against a 1.23 V internal reference, asserting the open-collector ERROR pin when output falls >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 DELAY pin voltage reaches 1.23 V. The device includes thermal shutdown and current limiting, and supports shutdown control with logic-level compatible input thresholds (VH = 1.6 V, VL = 0.18 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±0.5% (A-grade) at 25°C; ensures stable MCU core or analog sensor biasing without external feedback. |
| Max Continuous Output Current | 200 mA; sufficient for powering single-core microcontrollers, RF transceivers, or small FPGA I/O banks. |
| Dropout Voltage | 180 mV @ 200 mA load (typical); enables operation from 5.18 V input while maintaining regulation down to battery end-of-life. |
| Quiescent Current | <2 µA in shutdown mode; critical for long-term battery hold-up in always-on monitoring circuits. |
| Power-On Reset Delay | Programmable via external capacitor on DELAY pin (CDLY = TDELAY / 5.59×10⁵); provides configurable system initialization timing without additional ICs. |
| Operating Junction Temp | −40°C to +125°C; supports automotive cabin, industrial control, and outdoor embedded applications. |
| Input Voltage Range | 2.1 V to 16 V; accommodates wide-input DC-DC pre-regulation or direct connection to 12 V rail with margin. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0 mm × 3.0 mm, 0.65 mm pitch, exposed thermal pad, RoHS-compliant CU-SN finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BYPASS | Reference bypass node (LP2988 only) | Not connected on LP2987IMMX-5.0/NOPB; unused pin per datasheet - must be left floating or tied to GND per design guidance. |
| 2 - DELAY | Reset delay timing input | Accepts external capacitor to set power-on reset timeout; sourced by 2.2 µA current for precise RC-based delay generation. |
| 3 - GROUND | Analog ground reference | Low-impedance return path for regulator core and error comparator; requires dedicated analog ground plane for noise-sensitive loads. |
| 4 - INPUT | Unregulated input supply | Accepts 2.1–16 V input; requires ≥2.2 µF ceramic/tantalum capacitor within 0.5″ for stability and transient response. |
| 5 - SENSE | Output voltage feedback sense | High-impedance input monitoring regulated output; enables remote sensing to compensate for PCB trace IR drop. |
| 6 - OUTPUT | Regulated 5.0 V output | Delivers up to 200 mA; requires ≥4.7 µF output capacitor with controlled ESR (e.g., 1–10 Ω) for loop stability. |
| 7 - SHUTDOWN | Logic-controlled enable/disable | Active-high input: drives low to enter <2 µA shutdown; threshold VH = 1.6 V, VL = 0.18 V; slew rate ≥40 mV/µs required. |
| 8 - ERROR | Open-collector reset flag | Asserts low when output drops >5%; requires external pull-up resistor; doubles as power-on reset signal when DELAY pin used. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 200 mA enables operation from aging Li-ion cells (3.0 V min) while regulating 5.0 V output via boost+LDO hybrid architectures. |
| Programmable reset delay | Single external capacitor on DELAY pin sets reset timeout from milliseconds to seconds - eliminates need for discrete RC timer or supervisor IC. |
| 0.5% output accuracy (A-grade) | Guaranteed over temperature and line/load; reduces calibration overhead in precision ADC reference or sensor signal chains. |
| Thermal & current protection | Internally limits output during overload or high ambient; prevents damage during short-circuit or thermal runaway conditions without external components. |
| Low ground pin current | 1 mA @ 200 mA load (typical); improves overall system efficiency vs. standard LDOs with higher quiescent loss in high-current operation. |
Applications
| Portable Medical Monitor | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Powering low-power ECG front-end amplifier and 12-bit SAR ADC in handheld diagnostic device. IC Role / Device Role / Timing Role: Provides clean, accurate 5.0 V reference and analog supply; ERROR pin triggers MCU reset if battery voltage sags below safe operating level. Use Value: 0.5% voltage accuracy maintains ADC full-scale linearity; 180 mV dropout extends usable battery life by >12% compared to legacy 300 mV-dropout regulators. |
Use Scenario: Local 5.0 V supply for isolated digital I/O drivers and optocoupler bias in DIN-rail mounted controller. IC Role / Device Role / Timing Role: Regulates auxiliary rail from 24 V bus; SHUTDOWN pin enables firmware-controlled power cycling of I/O bank during fault recovery. Use Value: −40°C to +125°C rating ensures reliability in uncooled enclosures; programmable DELAY pin synchronizes I/O power-up with fieldbus controller boot sequence. |
| Automotive Infotainment Display | Wireless Sensor Node |
|
Use Scenario: Supplying backlight LED driver IC and touch controller in 12 V automotive display unit. IC Role / Device Role / Timing Role: Delivers stable 5.0 V despite cold-crank transients; ERROR pin feeds vehicle network watchdog to detect supply brownout. Use Value: 16 V absolute max input withstands load-dump spikes; 200 mA output supports burst-mode display refresh without voltage droop. |
Use Scenario: Powering BLE SoC and MEMS accelerometer in battery-operated predictive maintenance node. IC Role / Device Role / Timing Role: Enables ultra-low-quiescent sleep mode (<2 µA) between sensor readings; DELAY pin configures wake-up reset window after coin-cell recharge. Use Value: Shutdown current <2 µA extends 10-year battery life target; VSSOP-8 footprint minimizes PCB area in compact IoT enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP2987IMX-5.0/NOPB | SOIC-8 package (4.9 mm × 6.0 mm), same electrical specs, no BYPASS pin function, MSL Level-1 unlimited reflow. | Better suited for through-hole prototyping or legacy board layouts with larger pad spacing; less thermally efficient than VSSOP-8. | Select when board real estate allows larger footprint and manual assembly or rework is preferred. |
| TLS850B2TE/V33 | Automotive-grade 5.0 V LDO (AEC-Q100), 500 mA output, 250 mV dropout, integrated watchdog and reset generator. | Targets ASIL-B systems requiring safety mechanisms; includes fail-safe diagnostics not present in LP2987IMMX-5.0/NOPB. | Choose for automotive body electronics where functional safety compliance is mandatory; not drop-in due to different pinout and feature set. |
Compared with LP2987IMMX-5.0/NOPB, LP2987IMX-5.0/NOPB offers identical regulation performance in a larger SOIC-8 package for easier handling, while TLS850B2TE/V33 adds automotive safety features and higher current but requires redesign for pin compatibility and safety validation.
Availability
LP2987IMMX-5.0/NOPB is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O modules, automotive infotainment displays, and wireless sensor nodes requiring stable component supply with guaranteed long-term sourcing.
Supply support for LP2987IMMX-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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets since 1930.
The LP2987 family was designed specifically for micropower, ultra-low-dropout regulation in space- and energy-constrained portable systems, emphasizing precision, low noise, and integrated power sequencing capability.
FAQ
What is the maximum input voltage rating for LP2987IMMX-5.0/NOPB?
The LP2987IMMX-5.0/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 risks permanent damage. This rating allows direct use with 12 V automotive or industrial rails while maintaining margin for transients.
Does LP2987IMMX-5.0/NOPB support remote sensing?
Yes, LP2987IMMX-5.0/NOPB supports remote sensing via the SENSE pin (Pin 5), which connects directly to the load-side output node. This compensates for voltage drop across PCB traces or connectors, maintaining 5.0 V accuracy at the point of load under varying current conditions.
Can the ERROR pin of LP2987IMMX-5.0/NOPB drive a microcontroller reset input directly?
Yes, the ERROR pin is an open-collector output rated for 300 µA sink current at 220 mV saturation. When used with a standard 10 kΩ pull-up to 3.3 V or 5.0 V, it delivers a clean active-low reset signal compatible with most MCU reset inputs without additional buffering.
What is the thermal resistance (θJ−A) of the VSSOP-8 package used by LP2987IMMX-5.0/NOPB?
The VSSOP-8 (DGK) package for LP2987IMMX-5.0/NOPB has a junction-to-ambient thermal resistance (θJ−A) of 200°C/W under standard JEDEC test conditions. Actual performance improves significantly with copper pour and thermal vias under the exposed pad.
Is the BYPASS pin functional on LP2987IMMX-5.0/NOPB?
No - the BYPASS pin (Pin 1) is reserved for the LP2988 low-noise variant and is not connected internally on LP2987IMMX-5.0/NOPB. Per TI documentation, it must be left unconnected or tied to GND; routing a capacitor to it provides no benefit and may introduce noise coupling.
LP2987IMMX-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-VSSOP
LP2987IMMX-5.0/NOPB FAQ
1.How can I place an order for LP2987IMMX-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2987IMMX-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 LP2987IMMX-5.0/NOPB reliable?
The price and inventory of LP2987IMMX-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 LP2987IMMX-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2987IMMX-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2987IMMX-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2987IMMX-5.0/NOPB?
LP2987IMMX-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2987IMMX-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 LP2987IMMX-5.0/NOPB?
For technical support, including LP2987IMMX-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2987IMMX-5.0/NOPB requirements.
6.How does Aetrix verify that LP2987IMMX-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2987IMMX-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 LP2987IMMX-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2987IMMX-5.0/NOPB?
All LP2987IMMX-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2987IMMX-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 LP2987IMMX-5.0/NOPB part is unused and in its original packaging.
Return procedure for LP2987IMMX-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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