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Texas Instruments LP2988AIMM-3.3/NOPB
- Part No.:
- LP2988AIMM-3.3/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LP2988AIMM-3.3/NOPB.pdf
- Description:
- IC REG LINEAR 3.3V 200MA 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,554
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Product details
Overview
LP2988AIMM-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 programmable power-on reset delay via external capacitor, bypass pin for noise reduction, and <2 µA shutdown quiescent current. It serves as a precision low-noise supply for RF sections, analog sensor interfaces, and portable digital logic in battery-powered systems.
For engineers reviewing the LP2988AIMM-3.3/NOPB datasheet, LP2988AIMM-3.3/NOPB pinout, LP2988AIMM-3.3/NOPB application, or LP2988AIMM-3.3/NOPB equivalent, this page provides verified technical context, package mapping, noise performance data (20 µV RMS), dropout behavior (180 mV @ 200 mA), and validated alternative options for low-noise LDO replacement scenarios.
Technical Context
The LP2988AIMM-3.3/NOPB uses a vertically integrated PNP pass transistor architecture enabling ultra-low dropout (180 mV @ 200 mA) and stable operation with minimal external capacitance. 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.
Power-on reset timing is controlled by an internal 2.2 µA current source charging an external capacitor on the DELAY pin; the Bypass pin connects directly to the bandgap reference node, allowing a 0.01 µF low-leakage capacitor to reduce output noise spectral density by filtering reference noise-confirmed at 20 µV RMS (300 Hz–50 kHz) for 3.3 V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±0.5% (A-grade) - ensures stable core/logic rail tolerance across −40°C to +125°C junction temperature. |
| Dropout Voltage | 180 mV @ 200 mA load - enables regulation from 3.48 V input, critical for single-cell Li-ion or 3.6 V supply margin. |
| Output Noise | 20 µV RMS (300 Hz–50 kHz, CBYPASS = 0.01 µF) - supports noise-sensitive ADCs, RF synthesizers, and precision analog front-ends. |
| Quiescent Current | <2 µA in shutdown - extends battery life in always-on monitoring circuits with periodic wake-up. |
| Power-On Reset Delay | Programmable via external capacitor (CDELAY) - provides configurable system initialization timing without additional ICs. |
| Ground Pin Current | 1 mA @ 200 mA load - low parasitic current improves efficiency and reduces thermal load in compact layouts. |
| Operating Input Range | 2.1 V to 16 V - accommodates wide-input industrial and automotive auxiliary rails while maintaining regulation. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0 mm × 3.0 mm, 0.65 mm pitch, exposed thermal pad, RoHS-compliant matte tin lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BYPASS) | Bandgap reference bypass | Connects to low-leakage 0.01 µF capacitor to suppress reference noise; leakage <1 nA required to avoid output voltage shift. |
| 2 (DELAY) | Reset delay timing control | Sinks 2.2 µA to ground until VOUT stabilizes; external capacitor sets power-on reset timeout per CDLY = TDELAY/5.59×10⁵. |
| 3 (GROUND) | Analog ground return | Low-impedance path for reference, error amplifier, and pass transistor base current; must be routed separately from power ground. |
| 4 (INPUT) | Unregulated input supply | Accepts 2.1–16 V; requires ≥2.2 µF ceramic or tantalum input capacitor placed within 12.7 mm of pin. |
| 5 (SENSE) | Output voltage feedback | High-impedance sense node; connects directly to regulated output or remote point to compensate for PCB trace IR drop. |
| 6 (OUTPUT) | Regulated 3.3 V output | Delivers up to 200 mA; requires ≥4.7 µF output capacitor with ESR between 0.1 Ω and 10 Ω for stability. |
| 7 (SHUTDOWN) | Enable/disable control | Active-high logic: drives high (>1.4 V) to enable, low (<0.18 V) to enter sub-2 µA shutdown state. |
| 8 (ERROR) | Open-collector fault flag | Pulls low when VOUT falls >5% below 3.3 V or during power-up reset; requires external pull-up resistor (typically 10 kΩ). |
Key Features
| Feature | Design Value |
|---|---|
| Bypass pin noise reduction | Reduces output RMS noise from 100 µV (LP2987) to 20 µV via 0.01 µF capacitor on bandgap reference node. |
| Single-capacitor power-on reset | Eliminates discrete RC timer; DELAY pin current source enables precise, repeatable reset timing without external biasing. |
| Ultra-low dropout architecture | 180 mV dropout at full 200 mA load enables operation from marginal input sources like aging batteries or post-dropper supplies. |
| Thermal and current protection | Internally limits peak output current to >250 mA and disables output under overtemperature or short-circuit conditions. |
| 0.5% output accuracy (A-grade) | Guaranteed initial tolerance at room temperature ensures reliable logic-level compatibility and ADC reference stability. |
Applications
| Portable Medical Sensors | Industrial IoT Edge Node |
|---|---|
Use Scenario: Continuous glucose monitor with low-power MCU, analog front-end, and BLE radio operating from coin cell. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying MCU core, ADC reference, and RF transceiver; Bypass pin minimizes switching noise coupling into analog measurements. Use Value: 20 µV RMS noise ensures <1 LSB error in 16-bit medical ADC; 180 mV dropout extends usable battery life by 12% vs. standard LDOs. |
Use Scenario: Wireless vibration sensor node deployed in factory machinery with 10-year battery target. IC Role / Device Role / Timing Role: Always-on 3.3 V supply for accelerometer, microcontroller, and LoRaWAN transceiver; SHUTDOWN pin enables deep-sleep mode. Use Value: Sub-2 µA shutdown current reduces annual standby draw to <1.8 µA·yr; programmable reset delay ensures clean MCU boot after cold start. |
| Automotive Infotainment Display | Test & Measurement Equipment |
Use Scenario: TFT LCD backlight driver and touch controller powered from 5 V vehicle bus via local regulation. IC Role / Device Role / Timing Role: Secondary 3.3 V rail for display interface logic and capacitive touch IC; ERROR pin signals MCU on undervoltage events. Use Value: −40°C to +125°C junction rating meets AEC-Q100 Grade 2 requirements; 5% output fault threshold prevents erratic touch response during load dump. |
Use Scenario: Precision multimeter front-end requiring ultra-stable 3.3 V reference for 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Low-noise analog supply decoupled from digital domains; SENSE pin enables Kelvin sensing to eliminate PCB trace resistance errors. Use Value: 0.5% output accuracy and 20 ppm/°C tempco ensure <±0.02% full-scale drift over operating range; bypass pin eliminates 1/f noise contribution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLS850B0ELVSA1 | 500 mA output, integrated watchdog timer, 300 mV dropout @ 500 mA, no bypass pin | Targets automotive body electronics with ASIL-B compliance; lacks low-noise optimization for precision analog | Select when higher current and functional safety features outweigh noise performance requirements |
| TPS7A2033PDBVR | 300 mA output, 125 mV dropout @ 300 mA, 7 µV RMS noise, no DELAY pin or ERROR flag | Optimized for space-constrained portable devices; missing power-on reset and fault reporting functions | Select when lowest possible noise and footprint are critical, and reset timing is handled externally |
Compared with TLS850B0ELVSA1 and TPS7A2033PDBVR, the LP2988AIMM-3.3/NOPB uniquely combines programmable reset delay, open-collector fault flag, and 20 µV RMS noise in a VSSOP-8 package-making it optimal for battery-powered instrumentation where deterministic startup and analog integrity are co-dependent requirements.
Availability
LP2988AIMM-3.3/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, automotive infotainment displays, and test & measurement equipment requiring stable component supply with guaranteed long-term availability.
Supply support for LP2988AIMM-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 LDO design heritage and broad industrial qualification.
The LP2988AIMM-3.3/NOPB belongs to TI's precision micropower LDO family, engineered specifically for noise-critical battery-powered applications demanding ultra-low dropout, programmable reset, and guaranteed accuracy across extended temperature ranges.
FAQ
What is the maximum allowable input voltage for LP2988AIMM-3.3/NOPB?
The LP2988AIMM-3.3/NOPB supports an operating input voltage range of 2.1 V to 16 V. Absolute maximum survival rating is −0.3 V to +16 V on the INPUT pin. Exceeding 16 V may damage the internal PNP pass transistor or bandgap reference circuitry. For automotive applications with load dump transients, external clamping is recommended.
How does the BYPASS pin reduce output noise in LP2988AIMM-3.3/NOPB?
The BYPASS pin connects directly to the bandgap reference node inside the LP2988AIMM-3.3/NOPB. Adding a 0.01 µF low-leakage capacitor (e.g., COG/NPO ceramic) filters reference noise, reducing total output RMS noise from 100 µV (LP2987) to 20 µV (300 Hz–50 kHz). Leakage must remain below 1 nA to prevent output voltage shift.
Can LP2988AIMM-3.3/NOPB be used without connecting the DELAY pin?
Yes. If power-on reset functionality is not required, the DELAY pin should be left unconnected or tied to GROUND. The LP2988AIMM-3.3/NOPB will operate normally with immediate output regulation and ERROR pin asserting only on undervoltage faults. No external components are needed for basic LDO operation.
What is the purpose of the SENSE pin on LP2988AIMM-3.3/NOPB?
The SENSE pin provides remote output voltage sensing for the LP2988AIMM-3.3/NOPB. When connected directly to the load instead of the OUTPUT pin, it compensates for voltage drop across PCB traces or connectors, maintaining 3.3 V accuracy at the point of load. If unused, SENSE must be tied directly to OUTPUT.
Does LP2988AIMM-3.3/NOPB include overtemperature protection?
Yes. The LP2988AIMM-3.3/NOPB incorporates internal overtemperature protection that disables the output when junction temperature exceeds safe limits. Recovery occurs automatically once die temperature falls below the thermal shutdown threshold. This feature prevents permanent damage during sustained overload or poor heatsinking conditions.
LP2988AIMM-3.3/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:
- 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-VSSOP
LP2988AIMM-3.3/NOPB FAQ
1.How can I place an order for LP2988AIMM-3.3/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2988AIMM-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 LP2988AIMM-3.3/NOPB reliable?
The price and inventory of LP2988AIMM-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 LP2988AIMM-3.3/NOPB is usually 5 days.
3.What payment methods are accepted for LP2988AIMM-3.3/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2988AIMM-3.3/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2988AIMM-3.3/NOPB?
LP2988AIMM-3.3/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2988AIMM-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 LP2988AIMM-3.3/NOPB?
For technical support, including LP2988AIMM-3.3/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2988AIMM-3.3/NOPB requirements.
6.How does Aetrix verify that LP2988AIMM-3.3/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2988AIMM-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 LP2988AIMM-3.3/NOPB meets industry standards.
7.What is the process for return or replacement of LP2988AIMM-3.3/NOPB?
All LP2988AIMM-3.3/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2988AIMM-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 LP2988AIMM-3.3/NOPB part is unused and in its original packaging.
Return procedure for LP2988AIMM-3.3/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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