My Inquiry
My Account
Texas Instruments LP2985IM5-2.0
- Part No.:
- LP2985IM5-2.0
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2985IM5-2.0.pdf
- Description:
- IC REG LINEAR 2V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,587
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LP2985IM5-2.0 from Texas Instruments is a micropower, low-noise, fixed-output 2.0-V linear regulator in SOT-23-5 package, delivering 150 mA with 1% output accuracy (A-grade), 280 mV typical dropout at full load, and <1 µA shutdown current. It serves as a precision voltage source for ultra-low-voltage digital cores in portable battery-powered systems.
For engineers reviewing the LP2985IM5-2.0 datasheet, LP2985IM5-2.0 pinout, LP2985IM5-2.0 application, or LP2985IM5-2.0 equivalent, key selection criteria include guaranteed 150-mA output under 2.2 V minimum input, BYPASS-pin-enabled 30 µVRMS noise performance, thermal/overcurrent protection, and compatibility with low-ESR ceramic output capacitors down to 5 mΩ.
Technical Context
The LP2985IM5-2.0 employs a vertically integrated PNP (VIP) process to achieve ultra-low dropout and minimal ground current-825 µA at 150 mA load and 75 µA at 1 mA load. Its internal bandgap reference and dedicated BYPASS pin enable stable low-noise operation when paired with a 10-nF capacitor.
It features active ON/OFF control with logic-compatible thresholds (ON ≥1.6 V, OFF ≤0.15 V), foldback current limiting for short-circuit protection, and thermal shutdown that cycles output on/off until power dissipation decreases. Stability is ensured across –40°C to +125°C junction temperature with 2.2 µF ceramic output capacitance and ESR as low as 5 mΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.0 V ±1% (A-grade), ensuring stable core supply for 2.0-V logic without external feedback. |
| Max Output Current | 150 mA continuous, sufficient for microcontrollers, RF transceivers, and sensor interfaces in compact portable designs. |
| Dropout Voltage | 280 mV typical at 150 mA, enabling regulation from 2.28 V input-critical for single-cell Li-ion or Li-poly battery operation. |
| Ground Current | 825 µA at 150 mA load, minimizing total system quiescent power and extending battery runtime. |
| Output Noise | 30 µVRMS (300 Hz–50 kHz) with 10-nF BYPASS capacitor, meeting noise-sensitive analog/RF supply requirements. |
| Shutdown Current | <1 µA when ON/OFF pin ≤0.15 V, enabling deep-sleep modes in always-on IoT endpoints. |
| Input Voltage Range | 2.2 V to 16 V, supporting wide-input applications including multi-cell battery packs and industrial rails. |
| PSRR | 45 dB at 1 kHz, suppressing ripple from noisy switching supplies upstream of the LDO. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm footprint, thermally enhanced for surface-mount assembly in space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Power input | Accepts 2.2–16 V DC; requires ≥1 µF ceramic input capacitor within 1 cm for stability and transient response. |
| GND (Pin 2) | Reference ground | Device substrate connection; must tie to clean analog ground plane to minimize noise coupling. |
| ON/OFF (Pin 3) | Enable control input | Logic-level interface: ≥1.6 V enables regulation; ≤0.15 V disables output and reduces IQ to <1 µA. |
| BYPASS (Pin 4) | Noise reduction node | Connects to GND via 10-nF ceramic capacitor to suppress bandgap reference noise and lower output RMS noise to 30 µV. |
| OUT (Pin 5) | Regulated output | Delivers 2.0 V ±1% at up to 150 mA; requires ≥2.2 µF ceramic output capacitor with ESR ≤5 mΩ for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 280 mV typical at 150 mA enables use with single-cell batteries down to 2.28 V input while maintaining regulation. |
| Low-noise architecture | Dedicated BYPASS pin with 10-nF capacitor reduces output noise to 30 µVRMS, suitable for ADC references and RF PLLs. |
| High accuracy output | ±1% tolerance (A-grade) over –40°C to +125°C ensures reliable logic-level compliance without calibration. |
| Active shutdown control | ON/OFF pin draws only 0.01 µA in disable state and supports direct MCU GPIO interfacing without level-shifting. |
| Ceramic-capacitor stability | Stable with 2.2 µF ceramic output caps and ESR as low as 5 mΩ-eliminates need for larger, costlier tantalum or electrolytic types. |
| Integrated protection | Foldback current limiting and thermal shutdown prevent damage during overload or poor heatsinking conditions. |
Applications
| Cellular Baseband Core | Wearable Sensor Hub |
|---|---|
Use Scenario: Powers ARM Cortex-M4 core and embedded SRAM in LTE modem subsystem operating at 2.0 V. IC Role / Device Role / Timing Role: Primary low-noise, high-accuracy LDO supplying digital core rail with fast transient response to burst-mode processing loads. Use Value: 280 mV dropout allows sustained operation down to 2.28 V input from aging Li-ion cells; 30 µVRMS noise prevents bit errors in high-speed serial interfaces. | Use Scenario: Supplies 2.0-V rail to MEMS accelerometer, gyroscope, and BLE SoC in compact fitness tracker. IC Role / Device Role / Timing Role: Always-on power manager enabling sub-µA sleep mode via ON/OFF pin while maintaining regulated 2.0-V bias for wake-up sensors. Use Value: <1 µA shutdown current extends battery life to >6 months; SOT-23-5 footprint fits 8-mm × 8-mm wearable PCB real estate. |
| Medical Pulse Oximeter | Industrial Wireless Node |
Use Scenario: Provides clean 2.0-V supply to analog front-end (AFE) and optical driver IC in FDA-cleared oximeter. IC Role / Device Role / Timing Role: Low-noise analog rail generator isolating sensitive photodiode signal chain from digital switching noise. Use Value: 30 µVRMS output noise and 45 dB PSRR at 1 kHz ensure <0.5% SpO₂ measurement error under EMI-rich hospital environments. | Use Scenario: Regulates 2.0-V supply for LoRaWAN transceiver and microcontroller in battery-operated smart meter endpoint. IC Role / Device Role / Timing Role: High-reliability power conditioner handling wide input swings (3.0–14 V) from solar-charged LiFePO₄ battery. Use Value: 2.2–16 V input range accommodates full battery discharge curve; thermal shutdown prevents field failure during enclosure overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, 2.0-V LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC7701QDR | Fixed 2.0-V output, but 250-mA rating and higher 350-mV dropout; no BYPASS pin for noise reduction. | Lacks 30 µVRMS noise capability; unsuitable for precision analog or RF supply rails. | Select only if higher output current is required and noise is not critical. |
| MCP1702T-2002E/MB | 2.0-V A-grade LDO with 250-mA output and 600-mV max dropout; includes EN pin but no BYPASS functionality. | Higher dropout limits usable input range; no low-noise path for sensitive circuits. | Prefer when board space permits larger dropout margin and noise is secondary to cost. |
Compared with TLC7701QDR and MCP1702T-2002E/MB, the LP2985IM5-2.0 uniquely combines 280-mV dropout, 30-µVRMS noise via BYPASS, and 1% accuracy in SOT-23-5-making it optimal for space- and noise-constrained 2.0-V battery-powered systems where every millivolt and microamp matters.
Availability
LP2985IM5-2.0 is available at Aetrix Electronics and suitable for cellular baseband cores, wearable sensor hubs, medical pulse oximeters, and industrial wireless nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for LP2985IM5-2.0 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 expertise for battery-powered and industrial applications.
The LP2985LV-N product line was engineered specifically for ultra-low-voltage, low-noise, micropower regulation in portable electronics-targeting 1.5–2.0 V output rails where dropout, ground current, and noise directly impact battery life and signal integrity.
FAQ
What is the minimum input voltage required for LP2985IM5-2.0 to maintain 2.0-V regulation at 150 mA?
The LP2985IM5-2.0 requires a minimum input voltage of 2.28 V to sustain 2.0-V output at 150 mA load, based on its 280-mV typical dropout voltage. At –40°C to +125°C, the maximum dropout rises to 600 mV, so VIN ≥ 2.6 V is recommended for full-temperature-range reliability. This enables operation from partially discharged single-cell Li-ion batteries.
How does the BYPASS pin on LP2985IM5-2.0 reduce output noise, and what capacitor value is required?
The BYPASS pin connects directly to the internal bandgap reference node; adding a 10-nF ceramic capacitor between BYPASS and GND shunts high-frequency noise, reducing output RMS noise from ~120 µV to 30 µV (300 Hz–50 kHz). NPO/COG dielectric ceramics are mandatory-leakage must stay below 100 nA to avoid output voltage error. Larger values degrade noise performance due to parasitic effects.
Can LP2985IM5-2.0 be used with ceramic output capacitors, and what is the minimum required value?
Yes-the LP2985IM5-2.0 is explicitly designed for ceramic output capacitors with ESR as low as 5 mΩ. A minimum 2.2 µF X5R/X7R ceramic capacitor is required for stability across all loads and temperatures; increasing capacitance improves transient response without risk of oscillation. Tantalum or aluminum electrolytics are unnecessary and discouraged due to higher ESR and reliability concerns.
What happens to LP2985IM5-2.0 when the ON/OFF pin is left floating?
The ON/OFF pin has no internal pull-up or pull-down; if left floating, the device may power up unpredictably or latch in an undefined state due to noise coupling. TI mandates active termination: tie to VIN for always-on operation or drive with a clean logic signal. Floating operation violates Absolute Maximum Ratings and risks intermittent regulation or excessive ground current.
Does LP2985IM5-2.0 include overtemperature and overcurrent protection, and how do they behave?
Yes-LP2985IM5-2.0 integrates foldback current limiting and thermal shutdown. During overload, output current reduces progressively as VOUT drops (foldback), limiting power dissipation. If junction temperature exceeds ~160°C, thermal shutdown disables the pass element; the device cycles on/off until temperature falls. Neither feature requires external components and operates across the full –40°C to +125°C range.
LP2985IM5-2.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 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
LP2985IM5-2.0 FAQ
1.How can I place an order for LP2985IM5-2.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2985IM5-2.0 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 LP2985IM5-2.0 reliable?
The price and inventory of LP2985IM5-2.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2985IM5-2.0 is usually 5 days.
3.What payment methods are accepted for LP2985IM5-2.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2985IM5-2.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2985IM5-2.0?
LP2985IM5-2.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2985IM5-2.0 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 LP2985IM5-2.0?
For technical support, including LP2985IM5-2.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2985IM5-2.0 requirements.
6.How does Aetrix verify that LP2985IM5-2.0 is sourced from the original manufacturer or authorized distributors?
All LP2985IM5-2.0 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 LP2985IM5-2.0 meets industry standards.
7.What is the process for return or replacement of LP2985IM5-2.0?
All LP2985IM5-2.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2985IM5-2.0, 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 LP2985IM5-2.0 part is unused and in its original packaging.
Return procedure for LP2985IM5-2.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP2985IM5-2.0 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
