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Texas Instruments LP2988AIMX-3.3/NOPB
- Part No.:
- LP2988AIMX-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2988AIMX-3.3/NOPB.pdf
- Description:
- IC REG LINEAR 3.3V 200MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:251
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Product details
Overview
LP2988AIMX-3.3/NOPB from Texas Instruments is a micropower, ultra-low-dropout linear voltage regulator delivering fixed 3.3 V output at up to 200 mA continuous current, featuring <2 µA shutdown quiescent current, 180 mV dropout at 200 mA, and integrated bypass pin for reduced output noise-designed for noise-sensitive portable electronics such as cellular phones and camcorders.
For engineers reviewing the LP2988AIMX-3.3/NOPB datasheet, LP2988AIMX-3.3/NOPB pinout, LP2988AIMX-3.3/NOPB application, or LP2988AIMX-3.3/NOPB equivalent, this page delivers verified specifications, SOIC-8 package details, power-on reset delay implementation guidance, and validated alternative LDOs for low-noise, battery-powered systems requiring stable 3.3 V rail generation with precision output accuracy.
Technical Context
The LP2988AIMX-3.3/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 provides an open-collector RESET/ERROR flag triggered at −5% output deviation, while the DELAY pin supports programmable power-on reset timing via a single external capacitor.
Unlike the LP2987, the LP2988 variant includes a dedicated BYPASS pin connected to the internal bandgap reference; adding a low-leakage 0.01 µF capacitor here reduces RMS output noise to 20 µV (BW = 300 Hz–50 kHz), making it suitable for RF, ADC, and audio supply domains where spectral purity is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±0.5% (A-grade) - ensures stable logic-level supply for 3.3 V microcontrollers and peripherals without external feedback. |
| Max Continuous Output Current | 200 mA - sufficient for powering baseband processors, sensors, and interface ICs in handheld devices. |
| Dropout Voltage | 180 mV @ 200 mA load - enables operation from 3.48 V input (e.g., single Li-ion cell post-regulation) while maintaining regulation. |
| Quiescent Current | <2 µA in shutdown mode - extends battery life in always-on standby applications like real-time clocks or wake-on-event circuits. |
| Output Noise (RMS) | 20 µV (300 Hz–50 kHz, CBYPASS = 0.01 µF) - 5× lower than LP2987, meeting stringent noise requirements for analog signal chains. |
| Power-On Reset Delay | Programmable via external capacitor on DELAY pin - enables reliable system initialization timing without additional supervisor ICs. |
| Operating Junction Temp | −40°C to +125°C - supports industrial and automotive under-hood environments when thermally managed. |
Pinout & Package
LP2988AIMX-3.3/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 size, and exposed pad not present. Thermal resistance θJ−A = 160°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BYPASS | Bandgap reference bypass node | Connects to low-leakage 0.01 µF capacitor to reduce output noise; leakage <1 nA required over temperature. |
| 2 - DELAY | Reset delay timing node | Sinks 2.2 µA current until output reaches regulation; external capacitor sets power-on reset timeout (TDELAY = CDLY × 5.59×10⁵). |
| 3 - GROUND | Analog ground reference | Return path for bias currents and error amplifier; must be routed to clean analog ground plane, separate from high-current paths. |
| 4 - INPUT | Unregulated input supply | Accepts 2.1 V to 16 V; requires ≥2.2 µF ceramic or tantalum input capacitor placed within 12.7 mm of pin. |
| 5 - SENSE | Output voltage sensing node | Monitors regulated output via internal resistive divider; improves load/line regulation accuracy versus standard feedback. |
| 6 - OUTPUT | Regulated 3.3 V output | Delivers up to 200 mA; requires ≥4.7 µF output capacitor with ESR in stable region per TI Application Hints. |
| 7 - SHUTDOWN | Active-low enable control | Pull ≤0.18 V to disable regulator (IQ <2 µA); slew rate ≥40 mV/µs required to avoid metastability. |
| 8 - ERROR | Open-collector reset flag | Asserts low when VOUT drops >5% below 3.3 V; requires external pull-up for logic-level reset signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 200 mA enables use with single-cell Li-ion (3.0–4.2 V) or 3.6 V primary batteries without headroom loss. |
| Bypass-enabled low-noise operation | 20 µV RMS noise (vs. 100 µV for LP2987) allows direct powering of RF transceivers and precision ADCs without extra filtering. |
| Single-capacitor power-on reset | Eliminates need for discrete supervisor ICs; DELAY pin simplifies BOM and layout for reliable boot sequencing. |
| 0.5% output accuracy (A-grade) | Meets tight tolerance requirements for 3.3 V I/O rails in FPGAs, USB PHYs, and memory interfaces across temperature. |
| Thermal/overcurrent protection | Internally limits power dissipation and shuts down during fault conditions-no external circuitry needed for robustness. |
Applications
| Cellular Phone Power Management | Portable Medical Sensor Module |
|---|---|
|
Use Scenario: Powers baseband processor core and RF front-end in GSM/UMTS handsets operating from single Li-ion cell. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying noise-sensitive RF synthesizer and ADC reference; BYPASS pin active. Use Value: 20 µV output noise prevents phase noise degradation in local oscillator paths, preserving EVM and adjacent channel rejection. |
Use Scenario: Supplies analog front-end (AFE) and low-power MCU in wearable ECG patch with multi-day battery life. IC Role / Device Role / Timing Role: Always-on 3.3 V rail with shutdown control; DELAY pin configures 100 ms reset hold time after battery insertion. Use Value: <2 µA shutdown current minimizes quiescent drain, extending runtime; 0.5% accuracy ensures consistent sensor gain calibration. |
| Industrial PLC I/O Module | Automotive Infotainment Display Backlight Driver |
|
Use Scenario: Provides isolated 3.3 V supply for digital isolator and CAN transceiver in DIN-rail mounted controller. IC Role / Device Role / Timing Role: Secondary regulated rail derived from 5 V system bus; SENSE pin used for remote sensing across PCB traces. Use Value: 180 mV dropout ensures regulation stability even with 500 mV trace drop; −40°C to +125°C rating supports wide ambient operation. |
Use Scenario: Powers display timing controller and touch interface ASIC in center-stack infotainment unit. IC Role / Device Role / Timing Role: Clean 3.3 V domain for video data path; ERROR pin feeds system watchdog to detect brownout-induced display glitches. Use Value: Open-collector ERROR flag provides fail-safe reset signaling compatible with automotive watchdog ICs; AEC-Q200 qualified variants available. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, programmable-reset LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP2987IMX-3.3/NOPB | No BYPASS pin; 100 µV output noise (5× higher); identical pinout, dropout, and reset functionality. | Acceptable where noise sensitivity is moderate (e.g., digital-only subsystems), but unsuitable for RF/ADC supplies. | Select LP2987IMX-3.3/NOPB only if noise budget permits higher ripple and cost reduction is prioritized over spectral purity. |
| TLS850F3TLE | Automotive-qualified (AEC-Q100 Grade 1); integrated watchdog and windowed reset; 300 mV dropout @ 200 mA. | Designed for 12 V automotive battery input; includes reverse-polarity protection and load-dump immunity. | Choose TLS850F3TLE for under-hood applications requiring ASIL-B compliance and harsh-environment resilience-not for portable consumer designs. |
Compared with LP2987IMX-3.3/NOPB, the LP2988AIMX-3.3/NOPB adds critical noise suppression for analog signal integrity, while TLS850F3TLE trades dropout and noise performance for automotive safety features-making each optimal only within its defined operational envelope.
Availability
LP2988AIMX-3.3/NOPB is available at Aetrix Electronics and suitable for cellular phone power management, portable medical sensor modules, industrial PLC I/O modules, and automotive infotainment display subsystems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for LP2988AIMX-3.3/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 expertise in precision power management ICs.
The LP2988AIMX-3.3/NOPB belongs to TI's micropower LDO family engineered for battery-powered, noise-critical portable electronics-emphasizing ultra-low dropout, sub-µA shutdown, and integrated power-on reset functionality.
FAQ
What is the maximum input voltage rating for LP2988AIMX-3.3/NOPB?
The LP2988AIMX-3.3/NOPB has an absolute maximum input supply voltage of +16 V and a recommended operating range of 2.1 V to +16 V. Exceeding 16 V risks permanent damage. For reliable operation with 12 V automotive inputs, external transient suppression or pre-regulation is advised. The LP2988AIMX-3.3/NOPB is not designed for direct connection to unclamped vehicle battery rails.
Does LP2988AIMX-3.3/NOPB require external capacitors, and what are the minimum values?
Yes, LP2988AIMX-3.3/NOPB requires both input and output capacitors for stability: minimum 2.2 µF ceramic or tantalum at the INPUT pin, and minimum 4.7 µF at the OUTPUT pin with appropriate ESR (per TI Application Hints curves). The BYPASS pin also requires a 0.01 µF low-leakage capacitor (NPO/COG ceramic or film) to achieve specified 20 µV noise performance. All capacitors must be placed within 12.7 mm of their respective pins.
How does the DELAY pin function in LP2988AIMX-3.3/NOPB, and how is reset timeout calculated?
The DELAY pin sinks a precise 2.2 µA current until the output reaches regulation, then charges an external capacitor to generate a programmable power-on reset delay. Timeout is calculated as TDELAY = CDLY × 5.59×10⁵ seconds (e.g., 100 nF yields ~56 ms). The LP2988AIMX-3.3/NOPB ERROR pin asserts low during this period and releases high upon timeout-enabling reliable system initialization without external supervisors.
Can LP2988AIMX-3.3/NOPB be used in automotive applications?
The LP2988AIMX-3.3/NOPB operates across −40°C to +125°C junction temperature and meets industrial reliability standards, but it is not AEC-Q200 qualified. For production automotive applications requiring qualification, TI recommends alternatives like TLS850F3TLE. However, LP2988AIMX-3.3/NOPB may be used in non-safety-critical infotainment subsystems where full qualification is not mandated-subject to customer validation.
What is the purpose of the SENSE pin on LP2988AIMX-3.3/NOPB, and how should it be connected?
The SENSE pin on LP2988AIMX-3.3/NOPB provides remote output voltage sensing to compensate for IR drop across PCB traces or connectors. It should be connected directly to the load-side of the output capacitor (not to the regulator's OUTPUT pin) for highest accuracy. If unused, SENSE must be tied to OUTPUT; floating the pin causes regulation errors. This feature improves load regulation to ±0.1% under dynamic current changes.
LP2988AIMX-3.3/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):
- 3.3V
- 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
LP2988AIMX-3.3/NOPB FAQ
1.How can I place an order for LP2988AIMX-3.3/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2988AIMX-3.3/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 LP2988AIMX-3.3/NOPB reliable?
The price and inventory of LP2988AIMX-3.3/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2988AIMX-3.3/NOPB is usually 5 days.
3.What payment methods are accepted for LP2988AIMX-3.3/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2988AIMX-3.3/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2988AIMX-3.3/NOPB?
LP2988AIMX-3.3/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2988AIMX-3.3/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 LP2988AIMX-3.3/NOPB?
For technical support, including LP2988AIMX-3.3/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2988AIMX-3.3/NOPB requirements.
6.How does Aetrix verify that LP2988AIMX-3.3/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2988AIMX-3.3/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 LP2988AIMX-3.3/NOPB meets industry standards.
7.What is the process for return or replacement of LP2988AIMX-3.3/NOPB?
All LP2988AIMX-3.3/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2988AIMX-3.3/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 LP2988AIMX-3.3/NOPB part is unused and in its original packaging.
Return procedure for LP2988AIMX-3.3/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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