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Texas Instruments LP2988IM-5.0/NOPB
- Part No.:
- LP2988IM-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2988IM-5.0/NOPB.pdf
- Description:
- IC REG LINEAR 5V 200MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:475
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Product details
Overview
LP2988IM-5.0/NOPB from Texas Instruments is a micropower, 200 mA ultra-low-dropout linear voltage regulator with programmable power-on reset delay and bypass pin for noise reduction. It delivers 5.0 V output at ±0.5% accuracy (A-grade), 180 mV dropout at 200 mA, <2 µA shutdown current, and operates across −40°C to +125°C. It serves as the primary low-noise supply for precision analog circuitry in portable instrumentation.
For engineers reviewing the LP2988IM-5.0/NOPB datasheet, LP2988IM-5.0/NOPB pinout, LP2988IM-5.0/NOPB application, or LP2988IM-5.0/NOPB equivalent, this page provides verified specifications, SOIC-8 package details, noise-sensitive LDO design context, and validated alternative options for industrial and portable electronics.
Technical Context
The LP2988IM-5.0/NOPB uses a vertically integrated PNP (VIP) pass transistor architecture enabling ultra-low dropout and low ground current. 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 via an external capacitor on the DELAY pin charged by a 2.2 µA current source; the Bypass pin connects to a low-leakage capacitor (e.g., COG ceramic) to suppress bandgap reference noise and reduce output RMS noise to 20 µV (BW = 300 Hz–50 kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V, ±0.5% tolerance over temperature (A-grade), enabling stable biasing of ADCs and op-amps without trimming. |
| Dropout Voltage | 180 mV at 200 mA load (typical), allowing regulation from 5.18 V input - critical for single-cell Li-ion or multi-rail systems. |
| Output Noise | 20 µVRMS (300 Hz–50 kHz), reduced via Bypass pin capacitor - suitable for RF front-ends and high-resolution sensor signal chains. |
| Quiescent Current | <2 µA in shutdown mode, supporting battery-powered devices requiring multi-year standby life. |
| Reset Threshold | ERROR pin asserts low when output drops >5% below 5.0 V (i.e., <4.75 V), providing reliable brownout detection for microcontroller reset sequencing. |
| Operating Range | Input voltage 2.1 V to 16 V; junction temperature −40°C to +125°C - qualified for automotive cabin and industrial control environments. |
Pinout & Package
LP2988IM-5.0/NOPB is housed 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 |
|---|---|---|
| BYPASS (Pin 1) | Bandgap reference bypass node | Connects to low-leakage capacitor (e.g., 0.01 µF COG ceramic) to reduce output noise; leakage >1 nA degrades 5.0 V accuracy. |
| DELAY (Pin 2) | Reset delay timing input | Sinks 2.2 µA to charge external capacitor; sets power-on reset timeout (e.g., 100 ms with 0.18 µF). |
| GROUND (Pin 3) | Power return path | Carries up to 2.1 mA at 200 mA load; must connect to low-impedance analog ground plane to maintain PSRR & noise performance. |
| INPUT (Pin 4) | Main power input | Accepts 2.1 V–16 V; requires ≥2.2 µF input capacitor within 12.7 mm of pin to prevent instability and input rail collapse. |
| SENSE (Pin 5) | Output voltage feedback | High-impedance sense node; connects directly to regulated 5.0 V load point for remote sensing and improved load regulation. |
| OUTPUT (Pin 6) | Regulated 5.0 V output | Delivers up to 200 mA continuous; requires ≥4.7 µF output capacitor with ESR 0.1–1 Ω for stability per TI Application Note. |
| SHUTDOWN (Pin 7) | Enable/disable control | Active-high logic: >1.4 V enables regulator; <0.18 V disables with <2 µA quiescent draw - slew rate ≥40 mV/µs required. |
| ERROR (Pin 8) | Open-collector fault flag | Sinks current when output <4.75 V or during startup; requires external pull-up (e.g., 10 kΩ to 5.0 V) for reset signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 200 mA enables operation from marginal input rails (e.g., aged batteries or post-dropper supplies) without headroom loss. |
| Programmable reset delay | Single external capacitor on DELAY pin sets precise power-up timing (10 ms to 1 s), eliminating need for discrete RC timers or supervisor ICs. |
| Bypass-enabled low noise | 20 µVRMS output noise (vs. 100 µV for LP2987) supports noise-critical loads like PLLs, audio codecs, and precision DACs. |
| Robust protection | Integrated thermal shutdown, current limiting, and reverse-input protection (with external Schottky diode) ensure reliability in harsh environments. |
| Wide temperature range | Specified from −40°C to +125°C junction temperature - suitable for under-hood automotive, industrial PLCs, and outdoor IoT nodes. |
Applications
| Portable Medical Sensors | Automotive Cabin Controllers |
|---|---|
|
Use Scenario: Powering low-power ECG front-end amplifiers and 24-bit delta-sigma ADCs in wearable patch monitors. IC Role / Device Role / Timing Role: Primary 5.0 V LDO delivering ultra-low-noise, tightly regulated supply to analog signal chain; ERROR pin triggers MCU reset on battery sag. Use Value: 20 µVRMS noise ensures <1 LSB noise floor in 24-bit conversion; 180 mV dropout extends usable battery life by >15% vs. standard LDOs. |
Use Scenario: Supplying infotainment SoC I/O banks and touch controller in vehicle dashboards exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Stable 5.0 V rail generator with −40°C to +125°C operation; SHUTDOWN pin synchronizes power with ignition state. Use Value: ±0.5% output accuracy maintains GPIO logic margin across temperature; programmable DELAY ensures clean SoC boot after cold crank. |
| Industrial Data Loggers | Handheld Test Equipment |
|
Use Scenario: Regulating power for isolated RS-485 transceivers and precision voltage references in battery-backed field recorders. IC Role / Device Role / Timing Role: Low-quiescent LDO enabling multi-year battery life; SENSE pin compensates for PCB trace IR drop in distributed layouts. Use Value: <2 µA shutdown current reduces annual self-discharge to <1% of Li-SOCl₂ cell capacity; remote sensing maintains 5.0 V ±10 mV at load. |
Use Scenario: Providing clean 5.0 V to mixed-signal FPGA configuration circuits and display backlight drivers in portable oscilloscopes. IC Role / Device Role / Timing Role: Dual-role regulator: main supply during active use, low-noise bias during measurement acquisition; BYPASS pin engaged only during sampling. Use Value: Bypass-capacitor-selectable noise mode allows dynamic trade-off between runtime (low IQ) and measurement fidelity (low noise). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSS721AIPW | 5.0 V fixed, 250 mA, 350 mV dropout @ 200 mA, no Bypass pin, no reset delay | Lacks noise-reduction capability and power-on reset; suited for non-critical digital rails only | Select when cost sensitivity outweighs noise or sequencing requirements; verify thermal margin due to higher dropout. |
| TPS7A2050PDBVR | 5.0 V fixed, 300 mA, 175 mV dropout @ 300 mA, 6.5 µA IQ, no DELAY/ERROR pins | No integrated reset function or programmable delay; lower IQ but no fault signaling | Choose for ultra-low-power always-on subsystems where reset sequencing is handled externally; confirm layout compatibility (SOT-23-5 vs SOIC-8). |
Compared with LP2988IM-5.0/NOPB, TSS721AIPW trades noise performance and reset integration for lower cost, while TPS7A2050PDBVR improves current capability and quiescent current but removes system-level supervision features essential for autonomous startup reliability.
Availability
LP2988IM-5.0/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin controllers, and industrial data loggers requiring stable component supply with full temperature-range qualification and long-term lifecycle support.
Supply support for LP2988IM-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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of LDO design heritage and automotive-grade process validation.
The LP2988IM-5.0/NOPB belongs to TI's precision micropower LDO family, engineered specifically for noise-sensitive, battery-constrained applications where dropout, accuracy, and integrated power sequencing are critical system requirements.
FAQ
What is the maximum input voltage rating for LP2988IM-5.0/NOPB?
The LP2988IM-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. For inputs above 12 V, ensure thermal design accommodates increased power dissipation - SOIC-8 θJ−A is 160°C/W.
Does LP2988IM-5.0/NOPB require an external capacitor on the Bypass pin to function?
No, the LP2988IM-5.0/NOPB operates without a Bypass capacitor, but its output noise rises from 20 µVRMS to ~100 µVRMS (matching LP2987 performance). The Bypass pin is optional: connecting a 0.01 µF COG ceramic capacitor reduces broadband noise by 5×, essential for RF or high-resolution analog designs.
How is the power-on reset delay time calculated for LP2988IM-5.0/NOPB?
The delay time TDELAY (seconds) is calculated as TDELAY = CDLY × 5.59 × 10⁵, where CDLY is the capacitor value in farads on the DELAY pin. For example, a 0.22 µF capacitor yields ~123 ms delay. TI recommends CDLY ≤ 1 µF and low-leakage dielectrics (tantalum, film, or COG ceramic).
Can LP2988IM-5.0/NOPB be used with ceramic output capacitors?
Yes, but only with series resistance: the LP2988IM-5.0/NOPB requires 0.1–1 Ω ESR at the output for stability. Standard ceramic capacitors have ESR <10 mΩ and will cause oscillation. Add a 1 Ω resistor in series with the ceramic output capacitor, or use a tantalum capacitor (4.7 µF minimum, typical ESR ~0.5 Ω) for direct replacement.
What is the function of the SENSE pin on LP2988IM-5.0/NOPB?
The SENSE pin on LP2988IM-5.0/NOPB provides remote voltage sensing to compensate for IR drop across PCB traces or connectors. When wired directly to the load's 5.0 V input (not the OUTPUT pin), it improves load regulation to ±0.1% over 0–200 mA, critical for precision analog systems where local regulation errors degrade measurement accuracy.
LP2988IM-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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
LP2988IM-5.0/NOPB FAQ
1.How can I place an order for LP2988IM-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2988IM-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 LP2988IM-5.0/NOPB reliable?
The price and inventory of LP2988IM-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 LP2988IM-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2988IM-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2988IM-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2988IM-5.0/NOPB?
LP2988IM-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2988IM-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 LP2988IM-5.0/NOPB?
For technical support, including LP2988IM-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2988IM-5.0/NOPB requirements.
6.How does Aetrix verify that LP2988IM-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2988IM-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 LP2988IM-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2988IM-5.0/NOPB?
All LP2988IM-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2988IM-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 LP2988IM-5.0/NOPB part is unused and in its original packaging.
Return procedure for LP2988IM-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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