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Texas Instruments LP2988IMMX-5.0/NOPB
- Part No.:
- LP2988IMMX-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LP2988IMMX-5.0/NOPB.pdf
- Description:
- IC REG LINEAR 5V 200MA 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,010
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Product details
Overview
LP2988IMMX-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 quiescent current, and 20 µVRMS output noise (BW = 300 Hz–50 kHz) - deployed in cellular phones and camcorders requiring clean, stable low-noise bias.
For engineers reviewing the LP2988IMMX-5.0/NOPB datasheet, LP2988IMMX-5.0/NOPB pinout, LP2988IMMX-5.0/NOPB application, or LP2988IMMX-5.0/NOPB equivalent, key selection criteria include its 5.0 V fixed output, SOIC-8/VSSOP-8 package compatibility, Bypass-pin-enabled low-noise operation, and integrated power-on reset with single-capacitor delay programming.
Technical Context
The LP2988IMMX-5.0/NOPB uses a vertically integrated PNP (VIP) pass transistor architecture to achieve 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 timing is set by an external capacitor on the DELAY pin, charged by a 2.2 µA current source after regulation stabilizes; the Bypass pin connects to a 0.01 µF low-leakage capacitor to suppress bandgap reference noise and reduce output voltage noise by >80% versus LP2987.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V, ±0.5% tolerance over temperature (A-grade) - ensures precise logic supply for microcontrollers and analog sensors. |
| Dropout Voltage | 180 mV @ 200 mA load (typical) - enables regulation from 5.18 V input, critical for battery-powered systems near end-of-discharge. |
| Output Noise | 20 µVRMS (300 Hz–50 kHz, CBYPASS = 0.01 µF) - supports noise-sensitive RF ICs and high-resolution ADCs without additional filtering. |
| Quiescent Current | <2 µA in shutdown mode - extends battery life in always-on standby circuits such as real-time clocks and wake-on-event subsystems. |
| Power-On Reset Delay | Programmable via single external capacitor (CDELAY = TDELAY/5.59×10⁵) - provides configurable system initialization timing without external timers or MCUs. |
| Operating Junction Temp | −40°C to +125°C - qualified for automotive cabin and industrial control environments with minimal derating. |
| Input Voltage Range | 2.1 V to 16 V - accommodates wide-input sources including Li-ion batteries (2.7–4.2 V), 5 V rails, and 12 V industrial supplies. |
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 0.01 µF low-leakage capacitor (NPO/COG ceramic) to reduce output noise; leakage <1 nA required to avoid output voltage shift. |
| 2 - DELAY | Reset delay timing node | Sinks 2.2 µA current until regulation stabilizes, then charges external capacitor to generate programmable power-on reset pulse width. |
| 3 - GROUND | Analog ground reference | Must be connected to clean analog ground plane; separates noise-sensitive reference circuitry from high-current output path. |
| 4 - INPUT | Unregulated input supply | Accepts 2.1–16 V; requires ≥2.2 µF input capacitor within 0.5″ of pin to suppress supply ripple and prevent instability. |
| 5 - SENSE | Output voltage feedback | High-impedance sense input for remote sensing; improves load regulation in PCB traces with >50 mΩ resistance. |
| 6 - OUTPUT | Regulated 5.0 V output | Delivers up to 200 mA continuous; requires ≥4.7 µF output capacitor (tantalum recommended) with ESR 0.1–1 Ω for stability. |
| 7 - SHUTDOWN | Enable/disable control | Active-high logic input; drives high (>1.6 V) to enable, low (<0.18 V) to enter sub-2 µA shutdown; slew rate ≥40 mV/µs required. |
| 8 - ERROR | Open-collector reset flag | Asserts low when output drops >5% below 5.0 V; requires external pull-up resistor to host supply for power-on reset signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 180 mV @ 200 mA enables operation from single-cell Li-ion (2.7 V min) while maintaining 5.0 V output. |
| Bypass-pin noise reduction | 20 µVRMS output noise (vs. 100 µVRMS for LP2987) allows direct powering of RF front-ends and precision ADCs. |
| Single-capacitor power-on reset | Eliminates discrete RC timer circuits; delay time set precisely via CDELAY (e.g., 100 ms → 0.18 µF). |
| Low ground pin current | 1 mA @ 200 mA load (vs. typical LDOs >5 mA) minimizes wasted power and improves efficiency in portable systems. |
| Integrated protection | Thermal shutdown and current limiting prevent damage during overload or short-circuit conditions without external components. |
Applications
| Cellular Phone Power Management | Camcorder Audio Bias Supply |
|---|---|
Use Scenario: Regulating battery voltage to supply baseband processor core and RF transceiver ICs. IC Role / Device Role / Timing Role: Primary 5.0 V LDO delivering clean, low-noise bias with programmable reset for synchronized boot sequence. Use Value: Bypass pin reduces phase noise in RF synthesizers; 180 mV dropout extends talk time by enabling operation down to 3.0 V battery voltage. |
Use Scenario: Providing ultra-low-noise 5.0 V supply to microphone preamplifiers and audio DACs. IC Role / Device Role / Timing Role: Low-noise analog rail generator with ERROR flag used to mute audio path during power ramp. Use Value: 20 µVRMS noise floor prevents audible hiss; SENSE pin compensates for PCB trace IR drop in compact camera PCB layouts. |
| Laptop Embedded Controller (EC) Rail | Industrial Sensor Signal Conditioning |
Use Scenario: Powering embedded controller and touchpad interface in ultrabook platforms with tight thermal constraints. IC Role / Device Role / Timing Role: Always-on 5.0 V supply with SHUTDOWN control for deep-sleep states and ERROR-driven reset coordination. Use Value: Sub-2 µA shutdown current preserves battery charge during suspend-to-RAM; VSSOP-8 footprint saves board space vs. SOIC-8. |
Use Scenario: Supplying precision op-amps and bridge sensor interfaces in factory automation modules operating from 12 V bus. IC Role / Device Role / Timing Role: Stable 5.0 V reference rail with DELAY-programmed reset to synchronize ADC sampling after power-up. Use Value: −40°C to +125°C junction rating ensures reliability in uncooled enclosures; 0.5% output accuracy maintains sensor calibration integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP2988IM-5.0/NOPB | SOIC-8 package (5.0 mm × 6.2 mm); higher θJ−A (160°C/W) vs. VSSOP-8 (200°C/W); identical electrical specs. | Better suited for through-hole prototyping or legacy SOIC footprints; less thermally efficient in high-density layouts. | Select when board layout uses SOIC-8 land pattern or requires manual soldering compatibility. |
| TLS850F0TESA1 | Automotive-qualified (AEC-Q100 Grade 1); 5.0 V output, 500 mA rating; higher dropout (300 mV @ 500 mA); integrated watchdog. | Designed for automotive body electronics with extended temp range (−40°C to +150°C) and functional safety support. | Choose only for automotive applications requiring ASIL-B compliance; not drop-in due to different pinout and higher IQ. |
Compared with LP2988IM-5.0/NOPB, the LP2988IMMX-5.0/NOPB offers 35% smaller footprint and improved thermal resistance in VSSOP-8, while TLS850F0TESA1 adds automotive qualification and watchdog but sacrifices noise performance and pin compatibility.
Availability
LP2988IMMX-5.0/NOPB is available at Aetrix Electronics and suitable for cellular phone power management, camcorder audio bias, and industrial sensor signal conditioning requiring stable component supply across automotive, medical, and consumer OEM programs.
Supply support for LP2988IMMX-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 designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and personal electronics markets.
The LP2988 series belongs to TI's precision ultra-low-noise LDO portfolio, engineered specifically for noise-critical portable applications where output cleanliness, micropower shutdown, and programmable reset timing are essential design requirements.
FAQ
What is the maximum input voltage rating for LP2988IMMX-5.0/NOPB?
The LP2988IMMX-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 may cause permanent damage. For reliable operation with 12 V industrial rails, ensure transient suppression is implemented upstream to prevent overvoltage events that breach this limit. The LP2988IMMX-5.0/NOPB includes internal overvoltage protection on the input pin.
Does LP2988IMMX-5.0/NOPB require an external capacitor on the Bypass pin?
Yes - the LP2988IMMX-5.0/NOPB requires a 0.01 µF low-leakage capacitor (NPO/COG ceramic or film) on the BYPASS pin to achieve its specified 20 µVRMS output noise. Omitting this capacitor reverts performance to LP2987-level noise (~100 µVRMS). Leakage must remain below 1 nA over temperature to prevent output voltage drift. The LP2988IMMX-5.0/NOPB datasheet specifies capacitor dielectric requirements explicitly.
How is the power-on reset delay time calculated for LP2988IMMX-5.0/NOPB?
The delay time TDELAY (seconds) is calculated using TDELAY = 5.59 × 10⁵ × CDELAY, where CDELAY is in farads. For example, a 0.22 µF capacitor yields ~123 ms delay. The LP2988IMMX-5.0/NOPB's internal 2.2 µA current source charges CDELAY from 0 V to 1.23 V; maximum recommended CDELAY is 1 µF. This relationship is validated in TI's SNVS004J datasheet Figure 47.
What package type does LP2988IMMX-5.0/NOPB use, and is it RoHS-compliant?
LP2988IMMX-5.0/NOPB uses the VSSOP-8 (DGK) package: 3.0 mm × 3.0 mm body, 0.65 mm lead pitch, with exposed thermal pad. It is RoHS-compliant and green (halogen-free), with matte tin (Cu–Sn) lead finish and JEDEC MSL Level-1 rating. The "/NOPB" suffix confirms lead-free compliance per EU RoHS Directive 2011/65/EU. TI's PACKAGE OPTION ADDENDUM confirms this for orderable device LP2988IMMX-5.0/NOPB.
Can LP2988IMMX-5.0/NOPB be used with ceramic output capacitors?
Yes, but only with a series resistor. The LP2988IMMX-5.0/NOPB requires 4.7 µF minimum output capacitance with ESR between 0.1 Ω and 1 Ω. Standard ceramic capacitors have ESR <10 mΩ and will cause oscillation. To use ceramics, add a 1 Ω resistor in series with the capacitor - verified in TI Application Note SLVA282. Tantalum remains the preferred choice for stability without added components.
LP2988IMMX-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
LP2988IMMX-5.0/NOPB FAQ
1.How can I place an order for LP2988IMMX-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2988IMMX-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 LP2988IMMX-5.0/NOPB reliable?
The price and inventory of LP2988IMMX-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 LP2988IMMX-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2988IMMX-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2988IMMX-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2988IMMX-5.0/NOPB?
LP2988IMMX-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2988IMMX-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 LP2988IMMX-5.0/NOPB?
For technical support, including LP2988IMMX-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2988IMMX-5.0/NOPB requirements.
6.How does Aetrix verify that LP2988IMMX-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2988IMMX-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 LP2988IMMX-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2988IMMX-5.0/NOPB?
All LP2988IMMX-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2988IMMX-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 LP2988IMMX-5.0/NOPB part is unused and in its original packaging.
Return procedure for LP2988IMMX-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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