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Texas Instruments LP2985IM5X-2.0/NOPB
- Part No.:
- LP2985IM5X-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2985IM5X-2.0/NOPB.pdf
- Description:
- IC REG LINEAR 2V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,476
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Product details
Overview
LP2985IM5X-2.0/NOPB from Texas Instruments is a micropower, low-noise, fixed 2.0-V output linear regulator in SOT-23-5 package, delivering up to 150 mA with 1% output voltage accuracy (A-grade), 280 mV typical dropout at 150 mA, and <1 µA shutdown current. It serves as a precision local power supply for ultra-low-voltage digital cores in portable battery-powered systems.
For engineers reviewing the LP2985IM5X-2.0/NOPB datasheet, LP2985IM5X-2.0/NOPB pinout, LP2985IM5X-2.0/NOPB application, or LP2985IM5X-2.0/NOPB equivalent, key selection criteria include guaranteed 150-mA load capability at 2.0 V, stability with ceramic output capacitors ≥2.2 µF and ESR as low as 5 mΩ, ON/OFF logic control with 0.15 V low-threshold, and 30 µVRMS noise performance with 10-nF bypass capacitor.
Technical Context
The LP2985IM5X-2.0/NOPB employs a vertically integrated PNP (VIP) process to achieve ultra-low dropout and minimal ground current-825 µA typical at full 150-mA load and 75 µA at 1-mA load. Its internal architecture integrates foldback current limiting and thermal shutdown protection, enabling robust operation under short-circuit or overtemperature conditions without external circuitry.
It features a dedicated BYPASS pin that connects to an internal bandgap reference node; adding a 10-nF capacitor here reduces output noise to 30 µVRMS (300 Hz–50 kHz), while maintaining high PSRR of 45 dB at 1 kHz. The device operates across –40°C to +125°C junction temperature and supports input voltages from 2.2 V to 16 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.0 V ±1% (A-grade); ensures stable core voltage for 2.0-V logic rails without trimming. |
| Max Output Current | 150 mA continuous; sufficient for powering single-core microcontrollers or RF transceivers in compact devices. |
| Dropout Voltage | 280 mV typical at 150 mA; enables regulation from 2.28 V input, critical for single-cell Li-ion or Li-poly battery systems. |
| Ground Current | 825 µA typical at 150 mA load; minimizes parasitic drain during active operation, extending battery runtime. |
| Shutdown Current | 0.01 µA typical when ON/OFF pin < 0.15 V; reduces standby power to negligible levels in sleep-mode applications. |
| Output Noise | 30 µVRMS (300 Hz–50 kHz) with 10-nF BYPASS cap; meets low-noise requirements for ADC references or RF synthesizer supplies. |
| PSRR | 45 dB at 1 kHz; suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Stable Capacitor ESR | As low as 5 mΩ; allows use of small, low-cost X7R/X5R ceramic capacitors without stability risk. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input voltage supply | Accepts 2.2 V to 16 V; requires ≥1 µF ceramic input capacitor placed ≤1 cm from pin for stability. |
| GND (Pin 2) | Power ground reference | Common return for IN, OUT, and BYPASS; must connect to clean analog ground plane. |
| ON/OFF (Pin 3) | Enable/disable control input | Logic-high (>1.6 V) enables regulator; logic-low (<0.15 V) disables with <2 µA shutdown current. |
| BYPASS (Pin 4) | Noise reduction node | Connects to internal bandgap reference; 10-nF ceramic capacitor here reduces output noise by >50%. |
| OUT (Pin 5) | Regulated output | Delivers 2.0 V ±1% at up to 150 mA; requires ≥2.2 µF ceramic output capacitor with ESR ≤50 mΩ. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 280 mV typical at 150 mA enables operation from near-dead battery cells (e.g., 2.28 V min input for 2.0 V out). |
| Low-noise architecture | 30 µVRMS output noise with 10-nF BYPASS cap supports noise-sensitive analog/RF circuits without additional filtering. |
| ON/OFF logic control | 0.15 V max low-threshold and 1.6 V min high-threshold ensure reliable enable/disable with standard GPIOs or PMIC signals. |
| Ceramic-capacitor stability | Stable with 2.2 µF X7R ceramic output caps and ESR down to 5 mΩ-eliminates need for larger, costlier tantalum or polymer types. |
| Thermal & current protection | Integrated foldback current limiting and thermal shutdown prevent damage during overload or poor PCB heatsinking. |
| High accuracy over temp | ±2.5% total output error (–40°C to +125°C) ensures consistent performance across industrial and automotive ambient ranges. |
Applications
| Mobile Baseband Processor Supply | Wearable Sensor Hub Power |
|---|---|
Use Scenario: Powers 2.0-V I/O or core rail of cellular baseband ICs in smartphones and feature phones operating from single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary low-noise, low-dropout post-regulator delivering stable 2.0 V to processor subsystems with tight voltage tolerance. Use Value: Enables full 150-mA burst current during data transmission while maintaining <1% output deviation and <30 µV noise-critical for RF integrity. | Use Scenario: Supplies 2.0-V rail to ultra-low-power sensor fusion hubs (e.g., accelerometer + gyro + MCU) in hearables and fitness trackers. IC Role / Device Role / Timing Role: Always-on local regulator with ON/OFF control synchronized to motion-detection wake events. Use Value: Achieves <0.01 µA shutdown current during sleep, extending battery life beyond 7 days on coin-cell or micro-battery sources. |
| Medical Pulse Oximeter Analog Front-End | IoT Edge Node Microcontroller Core |
Use Scenario: Provides clean 2.0-V bias to photodiode transimpedance amplifiers and ADC reference buffers in portable oximeters. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from noisy digital domains via BYPASS pin filtering. Use Value: 30 µVRMS noise floor ensures <12-bit ENOB in 16-bit ADCs measuring weak optical signals without post-processing correction. | Use Scenario: Regulates 2.0-V core voltage for ARM Cortex-M0+ MCUs in battery-operated smart sensors deployed in industrial monitoring networks. IC Role / Device Role / Timing Role: Main system power IC with thermal protection to survive enclosure overheating during extended wireless transmission bursts. Use Value: Delivers 150 mA peak current during BLE advertising while maintaining 2.0 V ±1% under –40°C to +125°C junction conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, 2.0-V LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL720F205PDBVR | 2.05 V output (not 2.0 V); 200-mA rating; 170 mV dropout at 200 mA; no BYPASS pin. | Lacks noise-reduction capability; unsuitable where <30 µV noise is required. | Select only if output voltage tolerance >±25 mV is acceptable and noise is not critical. |
| MCP1804T-2002I/OT | 2.0 V output; 150-mA rating; 350 mV dropout at 150 mA; no ON/OFF pin; higher quiescent current (3 µA vs <0.01 µA). | No enable control; cannot support deep-sleep modes requiring sub-µA shutdown. | Choose only for always-on applications where ON/OFF functionality is unnecessary. |
Compared with LP2985IM5X-2.0/NOPB, TPL720F205PDBVR offers higher current but sacrifices noise performance and exact 2.0-V output, while MCP1804T-2002I/OT matches voltage and current but lacks enable control and has 300× higher shutdown current-making LP2985IM5X-2.0/NOPB uniquely suited for battery-constrained, noise-sensitive, and sleep-aware designs.
Availability
LP2985IM5X-2.0/NOPB is available at Aetrix Electronics and suitable for mobile communications, wearable health monitoring, portable medical instrumentation, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term availability.
Supply support for LP2985IM5X-2.0/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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in power management IC design.
The LP2985LV-N product line was engineered specifically for ultra-low-voltage, micropower, low-noise applications in space-constrained, battery-operated portable electronics-emphasizing dropout efficiency, noise suppression, and thermal resilience.
FAQ
What is the minimum input voltage required for LP2985IM5X-2.0/NOPB to maintain regulated 2.0-V output at 150 mA?
The LP2985IM5X-2.0/NOPB requires a minimum input voltage of 2.28 V at 150 mA load to sustain regulation, based on its maximum dropout voltage of 280 mV (typical) and 600 mV (over temperature). At room temperature and 150 mA, VIN ≥ 2.28 V ensures VOUT remains within ±1% of 2.0 V. Below this threshold, output voltage drops linearly with input.
Can LP2985IM5X-2.0/NOPB operate with a 1-µF ceramic input capacitor and a 2.2-µF ceramic output capacitor?
Yes - LP2985IM5X-2.0/NOPB is fully compatible with a 1-µF ceramic input capacitor (placed ≤1 cm from IN pin) and a 2.2-µF ceramic output capacitor (with ESR ≥5 mΩ and ≤50 mΩ). This combination satisfies stability requirements per TI's SNOS510Q datasheet and enables optimal transient response and noise performance in compact layouts.
Does LP2985IM5X-2.0/NOPB require the BYPASS pin to be used for basic operation?
No - the BYPASS pin is optional for basic regulation. LP2985IM5X-2.0/NOPB delivers full 150-mA output and 1% accuracy without any connection to BYPASS. However, connecting a 10-nF ceramic capacitor between BYPASS and GND reduces output noise from ~100 µVRMS to 30 µVRMS, which is essential for noise-sensitive analog circuits.
What is the ON/OFF pin logic threshold for enabling LP2985IM5X-2.0/NOPB?
The LP2985IM5X-2.0/NOPB enables when the ON/OFF pin voltage exceeds 1.6 V (minimum) and disables when pulled below 0.15 V (maximum), per datasheet Section 6.5. These thresholds are guaranteed over –40°C to +125°C junction temperature and allow direct interfacing with 1.8-V or 3.3-V GPIOs without level-shifting.
Is LP2985IM5X-2.0/NOPB pin-compatible with other members of the LP2985LV-N family?
Yes - all LP2985LV-N variants in SOT-23-5 (DBV) package share identical pinout: Pin 1 = IN, Pin 2 = GND, Pin 3 = ON/OFF, Pin 4 = BYPASS, Pin 5 = OUT. This allows drop-in replacement across output voltages (1.5 V to 2.0 V) and grades (A or standard), provided board layout accommodates the same 2.90 mm × 1.60 mm footprint.
LP2985IM5X-2.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.58V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 95 µA
- Current - Supply (Max):
- 2.5 mA
- PSRR:
- 45dB (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:
- SOT-23-5
LP2985IM5X-2.0/NOPB FAQ
1.How can I place an order for LP2985IM5X-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2985IM5X-2.0/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 LP2985IM5X-2.0/NOPB reliable?
The price and inventory of LP2985IM5X-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2985IM5X-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LP2985IM5X-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2985IM5X-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2985IM5X-2.0/NOPB?
LP2985IM5X-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2985IM5X-2.0/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 LP2985IM5X-2.0/NOPB?
For technical support, including LP2985IM5X-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2985IM5X-2.0/NOPB requirements.
6.How does Aetrix verify that LP2985IM5X-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LP2985IM5X-2.0/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 LP2985IM5X-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LP2985IM5X-2.0/NOPB?
All LP2985IM5X-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP2985IM5X-2.0/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 LP2985IM5X-2.0/NOPB part is unused and in its original packaging.
Return procedure for LP2985IM5X-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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