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Texas Instruments LP2988IMM-3.0/NOPB
- Part No.:
- LP2988IMM-3.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LP2988IMM-3.0/NOPB.pdf
- Description:
- IC REG LINEAR 3V 200MA 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,965
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Product details
Overview
LP2988IMM-3.0/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 3.0 V output at ±0.5% accuracy (A-grade), 180 mV dropout at 200 mA, and 20 µVRMS output noise (BW = 300 Hz–50 kHz) when using 0.01 µF bypass capacitor. It serves as a precision low-noise supply in portable battery-powered systems requiring stable rail generation and reliable power sequencing.
For engineers reviewing the LP2988IMM-3.0/NOPB datasheet, LP2988IMM-3.0/NOPB pinout, LP2988IMM-3.0/NOPB application, or LP2988IMM-3.0/NOPB equivalent, this page provides verified technical context, validated pin functions, confirmed noise-performance trade-offs, and real-world selection guidance for low-noise LDO deployment in space-constrained, thermally sensitive designs.
Technical Context
The LP2988IMM-3.0/NOPB uses a vertically integrated PNP pass transistor architecture to achieve ultra-low dropout (180 mV @ 200 mA) and low ground current (1 mA @ 200 mA). 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 set by an external capacitor on the DELAY pin, charged by a 2.2 µA current source; the Bypass pin connects to a low-leakage capacitor that filters the bandgap reference, directly reducing output voltage noise to 20 µVRMS. Shutdown control enables <2 µA quiescent current in sleep mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V, ±0.5% tolerance over temperature (A-grade), enabling precise biasing of ADCs, RF ICs, and low-voltage logic. |
| Dropout Voltage | 180 mV @ 200 mA load - supports operation down to VIN = 3.18 V, critical for single-cell Li-ion or 3.3 V system backup rails. |
| Output Noise | 20 µVRMS (300 Hz–50 kHz) with 0.01 µF bypass capacitor - meets stringent noise requirements for audio codecs and precision analog front-ends. |
| Quiescent Current | 1 mA @ full 200 mA load; <2 µA in shutdown - extends battery life in always-on sensor nodes and standby subsystems. |
| Power-On Reset Delay | Programmable via external capacitor on DELAY pin (CDLY = TDELAY / 5.59×10⁵) - enables configurable system initialization timing without additional logic. |
| Operating Junction Temp | −40°C to +125°C - qualified for automotive cabin modules, industrial controllers, and outdoor IoT edge devices. |
| Package | VSSOP-8 (DGK), 3.0 mm × 3.0 mm footprint - supports high-density PCB layouts while maintaining thermal resistance of θJ−A = 200°C/W. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0 mm × 3.0 mm, 0.65 mm pitch, exposed thermal pad (not electrically connected), RoHS-compliant matte tin lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BYPASS | Bias reference filter node | Connects to low-leakage capacitor (e.g., 0.01 µF COG ceramic) to suppress bandgap noise; omission increases output noise to ~100 µVRMS. |
| DELAY | Reset timer charge node | Sinks 2.2 µA to ground until VOUT reaches regulation, then charges external capacitor to generate programmable reset delay. |
| GROUND | Analog/Power return path | Shared ground for input/output/bypass; requires low-impedance connection to minimize noise coupling and ground bounce. |
| INPUT | Unregulated supply input | Accepts 2.1 V to 16 V; reverse-input protection diode requires external Schottky clamp if VOUT may exceed VIN. |
| SENSE | Output voltage feedback | High-impedance sense input; enables remote sensing to compensate for PCB trace IR drop in high-current applications. |
| OUTPUT | Regulated 3.0 V supply | Delivers up to 200 mA continuous; requires ≥4.7 µF output capacitor with ESR in stable region per TI Application Note AN-1187. |
| SHUTDOWN | Enable/disable control | Active-high logic; drives high (>1.6 V) to enable, low (<0.18 V) to enter <2 µA sleep mode; slew rate ≥40 mV/µs required. |
| ERROR | Open-collector fault flag | Asserts low when VOUT falls >5% below 3.0 V or during power-up delay; requires external pull-up resistor (e.g., 10 kΩ to VIN). |
Key Features
| Feature | Design Value |
|---|---|
| Bypass-pin noise reduction | Reduces output noise from 100 µVRMS (LP2987) to 20 µVRMS - enables clean power for RF transceivers and high-resolution SAR ADCs. |
| Single-capacitor power-on reset | Eliminates need for discrete RC timers or dedicated supervisor ICs - simplifies BOM and reduces board area in portable electronics. |
| Ultra-low ground current | 1 mA @ 200 mA load (vs. typical 5–10 mA for comparable LDOs) - improves efficiency in battery-operated systems with dynamic load profiles. |
| Thermal and current protection | Internally limits power dissipation and trips on overtemperature or short-circuit - ensures robustness without external foldback circuitry. |
| Wide input voltage range | Operates from 2.1 V to 16 V - supports direct connection to 12 V industrial rails, USB PD sources, or multi-cell battery stacks. |
Applications
| Cellular Phone Baseband | Portable Medical Sensor Node |
|---|---|
|
Use Scenario: Powering baseband processor I/O and memory interfaces in LTE smartphones with tight noise budgets. IC Role / Device Role / Timing Role: Primary 3.0 V LDO supplying core logic; ERROR pin synchronized to SoC reset controller for deterministic boot sequence. Use Value: 20 µVRMS noise prevents bit errors in high-speed DDR interface; 180 mV dropout extends usable battery voltage range by ~12 minutes per charge cycle. |
Use Scenario: Regulating power for ultra-low-power ECG front-end amplifier and BLE radio in wearable patch monitors. IC Role / Device Role / Timing Role: Low-noise 3.0 V rail generator; SHUTDOWN pin controlled by microcontroller to gate power during sleep intervals. Use Value: <2 µA shutdown current extends 200 mAh coin-cell lifetime to >18 months; VSSOP-8 footprint fits within 8 mm × 8 mm wearable PCB constraint. |
| Industrial PLC I/O Module | Automotive Cabin Camera |
|
Use Scenario: Providing isolated 3.0 V supply for analog sensor signal conditioning circuits in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Precision voltage reference source; SENSE pin used for Kelvin sensing across 10 cm PCB traces to maintain ±0.5% regulation. Use Value: −40°C to +125°C rating ensures reliability in uncooled enclosures; 0.5% output accuracy eliminates need for post-regulation trimming. |
Use Scenario: Powering CMOS image sensor and ISP in rear-view camera modules exposed to under-hood thermal cycling. IC Role / Device Role / Timing Role: Main 3.0 V domain regulator; DELAY pin configured for 100 ms reset hold-off to allow FPGA configuration before sensor initialization. Use Value: Thermal shutdown protection prevents latch-up during 85°C ambient soak tests; SOIC/VSSOP package compatibility enables drop-in replacement in legacy designs. |
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 |
|---|---|---|---|
| TLS850F0TESA1 | 500 mA output, integrated watchdog timer, 350 mV dropout @ 500 mA, no bypass pin | Higher current capability but 2.5× higher output noise (50 µVRMS) and no programmable reset | Select when system requires >200 mA or built-in watchdog; avoid when sub-30 µVRMS noise is mandatory. |
| TPS7A2030PDQNR | 300 mA output, 130 mV dropout @ 300 mA, 5.5 µVRMS noise (no bypass needed), 1.4 V min input | Lower noise and dropout, but lacks DELAY/ERROR pins for reset functionality and operates down to 1.4 V input | Select for lowest-noise 3.0 V rail where reset sequencing is handled externally; not suitable for 16 V input or reset-integrated designs. |
Compared with TLS850F0TESA1 and TPS7A2030PDQNR, the LP2988IMM-3.0/NOPB uniquely balances ultra-low noise (20 µVRMS), programmable reset, and 16 V input tolerance - making it optimal for noise-sensitive applications requiring robust power sequencing in wide-input industrial or automotive environments.
Availability
LP2988IMM-3.0/NOPB is available at Aetrix Electronics and suitable for cellular phone baseband, portable medical sensor nodes, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for LP2988IMM-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 company headquartered in Dallas, Texas, designing and manufacturing analog ICs, embedded processors, and digital signal solutions for industrial, automotive, and consumer markets.
The LP2988IMM-3.0/NOPB belongs to TI's precision micropower LDO family, engineered specifically for noise-critical portable electronics and industrial systems demanding ultra-low dropout, programmable reset, and extended temperature operation.
FAQ
What is the maximum input voltage rating for LP2988IMM-3.0/NOPB?
The LP2988IMM-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 risks permanent damage due to internal junction breakdown. For applications with transient overvoltage risk (e.g., automotive load dump), external clamping or TVS protection is required before the LP2988IMM-3.0/NOPB input pin.
How does the BYPASS pin reduce output noise in LP2988IMM-3.0/NOPB?
The BYPASS pin connects to the bandgap reference node inside the LP2988IMM-3.0/NOPB. Adding a low-leakage 0.01 µF capacitor (e.g., COG ceramic) shunts high-frequency noise from the reference, directly lowering output voltage noise from ~100 µVRMS (LP2987-level) to 20 µVRMS. Omitting the bypass capacitor or using high-leakage dielectrics degrades noise performance and may cause output drift.
Can LP2988IMM-3.0/NOPB be used with ceramic output capacitors?
Yes, LP2988IMM-3.0/NOPB supports ceramic output capacitors, but requires series resistance to ensure stability. The minimum output capacitance is 4.7 µF; however, low-ESR ceramics (e.g., 10 µF X7R) must include a 1 Ω resistor in series to meet the LDO's ESR stability criteria. Tantalum capacitors are preferred for unconditional stability without added components.
What is the function of the DELAY pin on LP2988IMM-3.0/NOPB?
The DELAY pin on LP2988IMM-3.0/NOPB sources a precise 2.2 µA current to charge an external capacitor, generating a programmable power-on reset delay. When input power rises, the ERROR pin remains low until the DELAY capacitor voltage reaches 1.23 V - providing a clean, adjustable reset pulse (e.g., 100 ms with 0.18 µF). This eliminates external reset ICs in cost-sensitive designs.
Is LP2988IMM-3.0/NOPB pin-compatible with LP2987IMM-3.0/NOPB?
Yes, LP2988IMM-3.0/NOPB is pin-compatible with LP2987IMM-3.0/NOPB in the same VSSOP-8 package - sharing identical pinout, electrical interface, and footprint. The key functional difference is the LP2988's BYPASS pin (pin 1), which the LP2987 leaves as NC. Swapping requires only adding the bypass capacitor; all other connections remain unchanged.
LP2988IMM-3.0/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:
- 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-VSSOP
LP2988IMM-3.0/NOPB FAQ
1.How can I place an order for LP2988IMM-3.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2988IMM-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 LP2988IMM-3.0/NOPB reliable?
The price and inventory of LP2988IMM-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 LP2988IMM-3.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2988IMM-3.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2988IMM-3.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2988IMM-3.0/NOPB?
LP2988IMM-3.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2988IMM-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 LP2988IMM-3.0/NOPB?
For technical support, including LP2988IMM-3.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2988IMM-3.0/NOPB requirements.
6.How does Aetrix verify that LP2988IMM-3.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2988IMM-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 LP2988IMM-3.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2988IMM-3.0/NOPB?
All LP2988IMM-3.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2988IMM-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 LP2988IMM-3.0/NOPB part is unused and in its original packaging.
Return procedure for LP2988IMM-3.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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