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Texas Instruments LP2983AIM5X-1.0
- Part No.:
- LP2983AIM5X-1.0
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2983AIM5X-1.0.pdf
- Description:
- IC REG LINEAR 1V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,371
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Product details
Overview
LP2983AIM5X-1.0 from Texas Instruments is a micropower 150-mA low-dropout linear voltage regulator in SOT-23-5 package, delivering fixed 1.0 V output with ±1% accuracy (A-grade), stable operation with zero-ESR ceramic capacitors, and ON/OFF control for power sequencing in space-constrained portable electronics.
For engineers reviewing the LP2983AIM5X-1.0 datasheet, LP2983AIM5X-1.0 pinout, LP2983AIM5X-1.0 application, or LP2983AIM5X-1.0 equivalent, key selection criteria include dropout voltage margin at 150 mA, ground current vs. load profile, thermal performance in SOT-23, ESR pin configuration for ceramic capacitor stability, and ON/OFF logic thresholds across −40°C to +125°C.
Technical Context
The LP2983AIM5X-1.0 uses a vertically integrated PNP pass transistor architecture enabling ultra-low ground current (75 µA at 1 mA, 825 µA at 150 mA) and high PSRR (65 dB at 1 kHz). Its dedicated ESR pin (Pin 4) provides direct low-impedance return for ceramic output capacitors, eliminating ESR dependency for stability.
It features active ON/OFF control with guaranteed turn-on threshold ≥1.6 V over full temperature range and shutdown current ≤12 µA, alongside foldback current limiting (400 mA short-circuit, 250 mA peak) and thermal shutdown protection triggered at ~150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0 V ±1% (A-grade, 25°C, 1–50 mA load) |
| Max Output Current | 150 mA continuous; supports 250 mA peak for transient loads |
| Input Voltage Range | 2.2 V to 16 V - enables single-cell Li-ion to multi-cell battery or industrial rail use |
| Ground Current | 75 µA at 1 mA load; 825 µA at 150 mA - minimizes quiescent power in always-on systems |
| Dropout Voltage | Typically 150 mV at 150 mA - ensures regulation down to VIN = 1.15 V |
| PSRR | 65 dB at 1 kHz - suppresses ripple from noisy input sources like switching converters |
| Thermal Shutdown | Activates at ~150°C junction temperature - protects against sustained overload or poor PCB thermal design |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.2–16 V; internal reverse-voltage diode requires external Schottky clamp if VOUT > VIN |
| 2 (GND) | Power ground reference | Substrate connection; return path for ground current and thermal conduction to PCB |
| 3 (ON/OFF) | Digital enable input | Logic-high (>1.6 V) enables output; logic-low (<0.05 V) disables regulator and reduces IGNDSHUTDOWN ≤12 µA |
| 4 (ESR) | Low-ESR capacitor return | Direct low-impedance return for ceramic output capacitor - mandatory for zero-ESR stability |
| 5 (OUT) | Regulated output | Delivers 1.0 V ±1%; connects to load and output capacitor anode (cathode to ESR pin) |
Key Features
| Feature | Design Value |
|---|---|
| Zero-ESR ceramic capacitor support | Stable with 2.2 µF X7R or Z5U ceramic on OUT–ESR pins - eliminates need for tantalum or aluminum electrolytic |
| Ultra-low quiescent current | 75 µA at 1 mA load enables >1-year battery life in coin-cell–powered IoT sensors |
| High-accuracy A-grade output | ±1% tolerance at 25°C, ±2.5% over −40°C to +125°C - suitable for precision analog rails |
| Integrated thermal and current protection | Foldback current limit + thermal shutdown prevent damage during short-circuit or high ambient conditions |
| ON/OFF control with low shutdown current | 12 µA max shutdown current allows deep-sleep modes without external load switches |
Applications
| Cellular Phone Baseband | Wearable Health Sensor |
|---|---|
Use Scenario: Powering ARM Cortex-M0+ MCU and BLE radio in compact smartphone sub-module. IC Role / Device Role / Timing Role: Primary 1.0 V core supply for digital baseband processor requiring tight voltage regulation and fast load transient response. Use Value: 65 dB PSRR rejects noise from adjacent RF sections; 150 mV dropout enables operation down to 1.15 V input during battery sag. | Use Scenario: Supplying ADC, optical heart-rate sensor, and ultra-low-power microcontroller in wrist-worn fitness tracker. IC Role / Device Role / Timing Role: Precision 1.0 V analog rail for 16-bit SAR ADC reference and sensor biasing. Use Value: ±1% A-grade output ensures <0.5 LSB error in 16-bit conversion; 75 µA ground current extends CR2032 battery life beyond 18 months. |
| Industrial PLC I/O Module | Medical Point-of-Care Device |
Use Scenario: Providing isolated 1.0 V logic supply for FPGA configuration memory and interface buffers in DIN-rail mounted controller. IC Role / Device Role / Timing Role: Secondary regulated rail derived from 3.3 V or 5 V system bus, supporting hot-swap and brownout resilience. Use Value: ON/OFF pin enables synchronized power-up sequencing with FPGA; thermal shutdown prevents latch-up during field-repair soldering events. | Use Scenario: Powering low-noise op-amps and precision temperature sensor in handheld blood glucose meter. IC Role / Device Role / Timing Role: Clean 1.0 V analog supply decoupled from digital switching noise. Use Value: 60 µV RMS output noise (300 Hz–50 kHz) avoids signal corruption in µV-level biosensor measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, low-ESR LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLS850B0ELVSE | 500-mA output, integrated watchdog timer, automotive AEC-Q100 Grade 1; no ESR pin | Designed for automotive body electronics; requires higher-ESR output capacitor (≥5 mΩ) | Select when automotive qualification and system monitoring are required; not drop-in due to different pinout and capacitor requirements |
| MCP1826T-1002E/DB | 300-mA output, 1.0 V fixed, no ON/OFF control, SOT-23-5; stable with 1 µF ceramic but no dedicated ESR pin | Cost-optimized consumer grade; lacks enable/shutdown functionality and thermal foldback | Select for simpler, non-sequenced applications where 12 µA shutdown current is unnecessary |
Compared with TLS850B0ELVSE and MCP1826T-1002E/DB, the LP2983AIM5X-1.0 uniquely combines A-grade 1% accuracy, ON/OFF control with sub-µA shutdown, and ESR-pin–based zero-ESR stability - making it optimal for portable medical and battery-powered precision analog systems where board space, noise, and sequencing matter.
Availability
LP2983AIM5X-1.0 is available at Aetrix Electronics and suitable for cellular phone baseband, wearable health sensors, industrial PLC I/O modules, medical point-of-care devices, and portable instrumentation requiring stable component supply with long-term lifecycle assurance.
Supply support for LP2983AIM5X-1.0 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 company headquartered in Dallas, Texas, designing and manufacturing analog ICs, embedded processors, and digital signal processors for industrial, automotive, and personal electronics markets.
The LP2983AIM5X-1.0 belongs to TI's micropower LDO voltage regulator product line, engineered specifically for ultra-low-noise, low-ESR ceramic-capacitor–based power delivery in space-constrained portable and medical electronics.
FAQ
What is the minimum input voltage required for LP2983AIM5X-1.0 to maintain 1.0 V regulation at full 150 mA load?
The LP2983AIM5X-1.0 requires a minimum input voltage of 1.15 V (1.0 V + typical 150 mV dropout) to sustain regulation at 150 mA. Per datasheet Section 6.5, VIN(min) is specified as 2.2 V under recommended operating conditions - this reflects the 1-V headroom needed for guaranteed stability and PSRR performance across temperature and process variation, not absolute dropout limit.
How must the output capacitor be connected for LP2983AIM5X-1.0 to remain stable?
The output capacitor for LP2983AIM5X-1.0 must be a ceramic type (minimum 2.2 µF, X7R or Z5U) connected directly between the OUT pin (Pin 5) and ESR pin (Pin 4), not to GND. This configuration leverages the dedicated ESR pin to provide a low-impedance return path, enabling stability even with zero-ESR ceramics - a requirement explicitly defined in TI's Application Note SNVS170D Section 8.2.2.1.2.
Does LP2983AIM5X-1.0 support reverse input-output voltage protection?
No, LP2983AIM5X-1.0 does not include internal reverse input-output voltage protection. Its PNP pass transistor contains an inherent diode from OUT to IN that conducts if VOUT exceeds VIN by >0.7 V, risking latch-up. TI mandates an external Schottky diode (cathode to IN, anode to OUT) in any application where output voltage may exceed input - as stated in Section 7.3.3 and Absolute Maximum Ratings Table.
What is the guaranteed shutdown current of LP2983AIM5X-1.0 when the ON/OFF pin is pulled low?
When the ON/OFF pin voltage is held below 0.05 V across the full −40°C to +125°C temperature range, the LP2983AIM5X-1.0 guarantees shutdown current ≤12 µA. This value is confirmed in Section 6.5 Electrical Characteristics under "IGND" test condition "VON/OFF < 0.05 V, –40°C ≤TJ ≤125°C", and enables ultra-low-power sleep modes in battery-operated systems.
Can LP2983AIM5X-1.0 be used with a 1 µF input capacitor?
Yes, LP2983AIM5X-1.0 requires a minimum 1 µF input capacitor between IN and GND, located within 1 cm of the IN pin and connected to clean analog ground. Ceramic, tantalum, or film types are acceptable; ESR is not specified, but capacitor tolerance and temperature coefficient must ensure ≥1 µF across the full operating range - per Section 8.2.2.1.1 of the official datasheet.
LP2983AIM5X-1.0 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):
- 1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 95 µA
- Current - Supply (Max):
- 2 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:
- SOT-23-5
LP2983AIM5X-1.0 FAQ
1.How can I place an order for LP2983AIM5X-1.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2983AIM5X-1.0 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 LP2983AIM5X-1.0 reliable?
The price and inventory of LP2983AIM5X-1.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2983AIM5X-1.0 is usually 5 days.
3.What payment methods are accepted for LP2983AIM5X-1.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2983AIM5X-1.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2983AIM5X-1.0?
LP2983AIM5X-1.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2983AIM5X-1.0 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 LP2983AIM5X-1.0?
For technical support, including LP2983AIM5X-1.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2983AIM5X-1.0 requirements.
6.How does Aetrix verify that LP2983AIM5X-1.0 is sourced from the original manufacturer or authorized distributors?
All LP2983AIM5X-1.0 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 LP2983AIM5X-1.0 meets industry standards.
7.What is the process for return or replacement of LP2983AIM5X-1.0?
All LP2983AIM5X-1.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2983AIM5X-1.0, 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 LP2983AIM5X-1.0 part is unused and in its original packaging.
Return procedure for LP2983AIM5X-1.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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