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Texas Instruments LP3995ILDX-2.8/NOPB
- Part No.:
- LP3995ILDX-2.8/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LP3995ILDX-2.8/NOPB.pdf
- Description:
- IC REG LINEAR 2.8V 150MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,268
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Product details
Overview
LP3995ILDX-2.8/NOPB from Texas Instruments is a micropower 150-mA CMOS low-dropout linear voltage regulator with fixed 2.8 V output, active shutdown, and fast turnoff (175 µs). It operates from 2.5 V to 6 V input, delivers ±2% output accuracy over −40°C to +125°C, and is optimized for RF/analog power in space-constrained portable devices.
For engineers reviewing the LP3995ILDX-2.8/NOPB datasheet, LP3995ILDX-2.8/NOPB pinout, LP3995ILDX-2.8/NOPB application, or LP3995ILDX-2.8/NOPB equivalent, key selection criteria include its 60 mV dropout at 150 mA, 25 µVRMS output noise, 0.003 µA quiescent current in shutdown, stability with 1-µF ceramic output capacitor, and DSBGA-5 package footprint.
Technical Context
The LP3995ILDX-2.8/NOPB integrates a precision bandgap reference, error amplifier, and PMOS pass transistor in a CMOS architecture enabling ultra-low ground current and near-zero shutdown current. Its BYPASS pin connects directly to the reference node, allowing external 10 nF capacitor placement to suppress noise without degrading transient response.
Enable control uses logic-level thresholds (VIH = 0.9 V, VIL = 0.4 V) with internal active discharge circuitry that pulls down the output during turnoff, achieving 175 µs discharge time. Thermal shutdown activates at ~160°C with 20°C hysteresis, and short-circuit protection limits output current to 450 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% over −40°C to +125°C - ensures stable bias for RF transceivers and analog sensors without external feedback. |
| Max Output Current | 150 mA - sufficient for powering baseband processors, Bluetooth radios, or multiple low-power peripherals from single regulator. |
| Dropout Voltage | 60 mV at 150 mA load - enables operation down to 2.86 V input, maximizing battery runtime in Li-ion and dual-cell alkaline systems. |
| Quiescent Current | 140–200 µA active, ≤1.5 µA shutdown - extends standby time in always-on IoT nodes and wearable sleep-mode circuits. |
| Output Noise | 25 µVRMS (10 Hz–100 kHz) - meets stringent noise requirements for ADC references, VCO supplies, and RF front-end biasing. |
| PSRR | 60 dB at 1 kHz - rejects ripple from switching DC/DC converters upstream, reducing need for additional filtering stages. |
| Turnoff Time | 175 µs to 5% - enables rapid power gating in burst-mode communication systems like GSM TDMA slots. |
Pinout & Package
LP3995ILDX-2.8/NOPB is packaged in a 5-pin DSBGA (YZR) with 1.502 mm × 1.045 mm body size and bottom thermal pad connected to GND. The package is lead-free, RoHS-compliant, and optimized for minimal PCB area in handheld applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input supply connection | Accepts 2.5–6 V input; requires 1-µF ceramic decoupling within 1 cm to ensure stability and reduce high-frequency noise coupling. |
| GND (Pin 2) | Ground reference | Common return path for input, output, and enable; must be low-impedance analog ground to maintain PSRR and noise performance. |
| EN (Pin 3) | Logic-enable control | Active-high input (VIH ≥ 0.9 V); drives regulator into <1.5 µA shutdown state when ≤0.4 V; includes internal pull-down for default-off behavior. |
| BYPASS (Pin 4) | Noise reduction node | Direct connection to bandgap reference; 10 nF capacitor here reduces output noise by stabilizing reference voltage without slowing startup. |
| OUT (Pin 6) | Regulated output | Delivers 2.8 V to load; supports 1-µF ceramic capacitor (X7R/Z5U) with ESR 5–500 mΩ; remains stable with zero load. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with 1-µF ceramic output capacitor | Eliminates need for larger, costly tantalum or electrolytic capacitors-reduces BOM count and board area in compact designs. |
| Active output discharge on disable | Internally discharges output capacitance via controlled FET, ensuring rapid voltage collapse (<175 µs) for safe sequencing in multi-rail systems. |
| Virtually zero shutdown current | ≤1.5 µA typical shutdown IQ enables >1-year battery life in coin-cell-powered remote sensors and BLE beacons. |
| Low-noise bandgap reference with BYPASS pin | External 10 nF capacitor on BYPASS reduces output noise to 25 µVRMS, critical for precision analog and RF signal chain integrity. |
| Thermal and short-circuit protection | Auto-shutdown at ~160°C junction temperature with 20°C hysteresis; current-limited to 450 mA-prevents damage during fault conditions. |
Applications
| GSM Transceiver Power | Bluetooth Audio Module Supply |
|---|---|
Use Scenario: Powers RF power amplifier and baseband IC in dual-band GSM handset operating from single Li-ion cell. IC Role / Device Role / Timing Role: Primary LDO delivering clean 2.8 V bias to PA driver stage and analog front-end; sequenced via EN pin during transmit bursts. Use Value: 60 mV dropout preserves headroom at end-of-discharge (3.0 V), while 25 µVRMS noise prevents AM-to-PM distortion in transmit path. |
Use Scenario: Supplies 2.8 V to Bluetooth audio codec and Class AB headphone driver in wireless earbud. IC Role / Device Role / Timing Role: Low-noise post-regulator after buck converter; enabled only during audio playback via host MCU GPIO. Use Value: 175 µs turnoff eliminates pop/click artifacts during pause/resume; 140 µA quiescent current extends talk time by >8% vs. standard LDOs. |
| Portable Medical Sensor Node | Industrial Wireless Sensor Transmitter |
Use Scenario: Powers ultra-low-power ECG analog front-end and SAR ADC in disposable patch monitor. IC Role / Device Role / Timing Role: Always-on 2.8 V rail for sensor bias and reference; disabled only during deep-sleep cycles via EN pin. Use Value: ±2% output accuracy over −40°C to +85°C ensures consistent ADC full-scale range; zero-load stability maintains regulation during intermittent sampling. |
Use Scenario: Supplies 2.8 V to LoRaWAN transceiver and microcontroller in battery-operated tank level sensor. IC Role / Device Role / Timing Role: Main system regulator activated only during 30-second hourly transmission window; otherwise held in shutdown. Use Value: ≤1.5 µA shutdown current enables 10-year battery life on CR123A; DSBGA-5 footprint fits within 4 mm² PCB area constraint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, micropower LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL720F285PDBVR | 2.85 V output (±1%), 200 mA rating, 50 mV dropout at 200 mA, 15 µVRMS noise, SOT-23-5 package | Higher accuracy and lower noise, but larger SOT-23 footprint and no BYPASS pin for external noise filtering | Select when tighter output tolerance and lower noise are prioritized over board area and design flexibility. |
| MCP1703T-2802E/MB | 2.8 V output (±2%), 250 mA rating, 600 mV dropout at 250 mA, 30 µVRMS noise, SOT-23-5 package | Higher dropout limits usable input range; no active discharge; higher noise; lacks BYPASS functionality | Choose only if cost is primary constraint and application tolerates higher dropout and slower turnoff. |
Compared with TPL720F285PDBVR, LP3995ILDX-2.8/NOPB offers smaller DSBGA footprint and BYPASS-driven noise optimization; versus MCP1703T-2802E/MB, it delivers 10× lower dropout and integrated active discharge-critical for battery-sensitive, fast-sequencing systems.
Availability
LP3995ILDX-2.8/NOPB is available at Aetrix Electronics and suitable for GSM transceivers, Bluetooth audio modules, portable medical sensors, industrial wireless transmitters, and low-power IoT edge nodes requiring stable component supply across long production lifecycles.
Supply support for LP3995ILDX-2.8/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 LP3995ILDX-2.8/NOPB belongs to TI's micropower LDO family engineered specifically for battery-powered RF and analog subsystems where ultra-low noise, fast enable/disable, and minimal board area are mandatory design requirements.
FAQ
What is the maximum input voltage rating for LP3995ILDX-2.8/NOPB?
The absolute maximum input voltage for LP3995ILDX-2.8/NOPB is 6.5 V, but the recommended operating range is 2.5 V to 6 V. Exceeding 6.5 V risks permanent damage per Absolute Maximum Ratings. For reliable operation in Li-ion applications, VIN should remain ≤6 V even at full charge (4.2 V nominal + tolerance).
Does LP3995ILDX-2.8/NOPB require an external bypass capacitor, and what value is recommended?
Yes, LP3995ILDX-2.8/NOPB requires a 10 nF capacitor between the BYPASS pin and GND to minimize output noise and prevent overshoot during startup. TI specifies this value in the datasheet (SNVS179F, Section 5), and using NPO/COG ceramic ensures low leakage and stable reference performance.
Can LP3995ILDX-2.8/NOPB operate without any load connected to the OUT pin?
Yes, LP3995ILDX-2.8/NOPB remains stable and in regulation with zero load, as confirmed in Section 9.2.2.4 of the datasheet. This makes it suitable for applications like CMOS RAM keep-alive circuits or standby bias rails where load current may drop to 0 µA intermittently.
What is the thermal shutdown threshold and hysteresis behavior of LP3995ILDX-2.8/NOPB?
LP3995ILDX-2.8/NOPB activates thermal shutdown at approximately 160°C junction temperature and re-enables automatically when junction temperature cools to ~140°C, providing 20°C hysteresis. This cycling protects against sustained overload but is not intended to replace proper thermal design per Section 8.3.5.
Is the DSBGA package of LP3995ILDX-2.8/NOPB compatible with standard reflow profiles?
Yes, the YZR DSBGA package of LP3995ILDX-2.8/NOPB is qualified for standard Pb-free reflow per JEDEC J-STD-020. Peak temperature must not exceed 260°C, and thermal vias under the exposed pad are recommended for optimal heat dissipation-details are provided in TI Application Note AN-1187.
LP3995ILDX-2.8/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.1V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 200 µA
- PSRR:
- 60dB ~ 50dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2.92x3.29)
LP3995ILDX-2.8/NOPB FAQ
1.How can I place an order for LP3995ILDX-2.8/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP3995ILDX-2.8/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 LP3995ILDX-2.8/NOPB reliable?
The price and inventory of LP3995ILDX-2.8/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP3995ILDX-2.8/NOPB is usually 5 days.
3.What payment methods are accepted for LP3995ILDX-2.8/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP3995ILDX-2.8/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP3995ILDX-2.8/NOPB?
LP3995ILDX-2.8/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP3995ILDX-2.8/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 LP3995ILDX-2.8/NOPB?
For technical support, including LP3995ILDX-2.8/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP3995ILDX-2.8/NOPB requirements.
6.How does Aetrix verify that LP3995ILDX-2.8/NOPB is sourced from the original manufacturer or authorized distributors?
All LP3995ILDX-2.8/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 LP3995ILDX-2.8/NOPB meets industry standards.
7.What is the process for return or replacement of LP3995ILDX-2.8/NOPB?
All LP3995ILDX-2.8/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP3995ILDX-2.8/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 LP3995ILDX-2.8/NOPB part is unused and in its original packaging.
Return procedure for LP3995ILDX-2.8/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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