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Texas Instruments LP2983AIM5-1.0
- Part No.:
- LP2983AIM5-1.0
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2983AIM5-1.0.pdf
- Description:
- IC REG LINEAR 1V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,538
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Product details
Overview
LP2983AIM5-1.0 from Texas Instruments is a micropower 150-mA low-dropout linear voltage regulator in SOT-23-5 package, delivering a 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 LP2983AIM5-1.0 datasheet, LP2983AIM5-1.0 pinout, LP2983AIM5-1.0 application, or LP2983AIM5-1.0 equivalent, key selection criteria include dropout voltage margin at 150 mA, ground current vs. load profile, thermal performance on minimal copper, ESR pin connection requirement, and ON/OFF logic thresholds across −40°C to +125°C.
Technical Context
The LP2983AIM5-1.0 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 internal ESR-sense path (pin 4) enables stability with ceramic capacitors as low as 2.2 µF and zero ESR - eliminating need for tantalum or aluminum electrolytics.
It integrates overtemperature shutdown and foldback current limiting (400 mA short-circuit, 250 mA peak), operates from 2.2 V to 16 V input, and features a dedicated ON/OFF pin (pin 3) with 1.4 V turn-on threshold (25°C) and <12 µA shutdown current - supporting low-power sleep modes in battery-powered systems.
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 transient peaks up to 250 mA |
| Input Voltage Range | 2.2 V to 16 V - enables single-cell Li-ion to multi-cell supply compatibility |
| Ground Current | 75 µA at 1 mA load; 825 µA at 150 mA load - minimizes quiescent power loss |
| Dropout Voltage | Typically 150 mV at 150 mA - requires only 1.15 V input to sustain 1.0 V output |
| PSRR | 65 dB at 1 kHz - suppresses ripple from noisy switchers or shared rails |
| Thermal Shutdown | Activates at ~160°C junction temperature - protects against sustained overload or poor layout |
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; must be decoupled with ≥1 µF capacitor within 1 cm of pin |
| 2 (GND) | Power ground reference | Common return for IN, OUT, and ON/OFF; connects to clean analog ground plane |
| 3 (ON/OFF) | Digital enable control | Logic-high (>1.4 V) enables regulation; logic-low (<0.1 V) reduces ground current to ≤12 µA |
| 4 (ESR) | Low-side ESR sense node | Must connect directly to negative terminal of ceramic output capacitor - critical for zero-ESR stability |
| 5 (OUT) | Regulated output | Delivers 1.0 V ±1%; connects to positive terminal of output capacitor (2.2–4.7 µF X7R or Z5U) |
Key Features
| Feature | Design Value |
|---|---|
| Zero-ESR capacitor support | Stable with ceramic output caps down to 0 Ω ESR - eliminates ESR-related oscillation risk and simplifies BOM |
| Ultra-low quiescent current | 75 µA at 1 mA load enables >1-year battery life in always-on sensor nodes |
| Integrated thermal protection | Auto-cycles output during sustained overload - prevents permanent damage without external circuitry |
| High-accuracy A-grade output | ±1% tolerance at 25°C ensures reliable logic-level compliance for 1.0 V core supplies |
| ON/OFF-controlled sleep mode | Reduces total system current to <15 µA when disabled - ideal for wake-on-event architectures |
Applications
| Cellular Baseband Power | Wearable Sensor Core Supply |
|---|---|
Use Scenario: Powers ARM Cortex-M0+ baseband processor core requiring tightly regulated 1.0 V at up to 120 mA during burst transmission. IC Role / Device Role / Timing Role: Primary LDO delivering clean, low-noise 1.0 V rail with fast line/load transient response to maintain digital logic integrity. Use Value: 65 dB PSRR at 1 kHz rejects switching noise from adjacent PMIC DC/DC converters; 150 mV dropout enables use of partially discharged Li-ion cells. | Use Scenario: Supplies MEMS accelerometer and BLE SoC in hearable device where standby current must remain below 20 µA. IC Role / Device Role / Timing Role: Always-on voltage regulator with ON/OFF pin controlled by host MCU to gate power during deep sleep. Use Value: 12 µA shutdown current extends battery life; zero-ESR ceramic cap compatibility eliminates leakage-prone tantalum parts. |
| Industrial IoT Edge Node | Medical Diagnostic Handheld |
Use Scenario: Provides 1.0 V bias to ultra-low-power ADC and RF transceiver in battery-operated environmental monitor. IC Role / Device Role / Timing Role: Precision analog supply rail with <60 µV RMS noise ensuring 16-bit ADC SNR performance. Use Value: 60 µV RMS output noise (300 Hz–50 kHz) meets ENOB requirements; −40°C to +125°C operation supports outdoor deployment. | Use Scenario: Powers FPGA configuration memory and low-voltage I/O banks in portable ultrasound probe requiring medical-grade reliability. IC Role / Device Role / Timing Role: Safety-critical core voltage regulator with overtemperature and overcurrent fault containment. Use Value: Thermal shutdown and foldback current limiting prevent thermal runaway during probe sterilization cycles or abnormal loads. |
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 |
|---|---|---|---|
| TLC7601CDR | 1.0 V fixed, 100 mA max, 250 µA ground current at full load, no ON/OFF pin | Lacks enable control and thermal shutdown; limited to lower-current, non-sequencing roles | Choose only if ON/OFF control and 150 mA headroom are unnecessary |
| TPS7A0510PDBVR | 1.0 V fixed, 200 mA max, 25 µA IQ, integrated thermal foldback, SOT-23-5 pinout | Lower quiescent current but higher minimum input voltage (1.4 V); less PSRR (55 dB @ 1 kHz) | Prefer for ultra-low-IQ designs where input voltage stays >1.4 V; verify PSRR margin for noise-sensitive analog stages |
Compared with TLC7601CDR and TPS7A0510PDBVR, the LP2983AIM5-1.0 uniquely balances 150 mA capability, ±1% A-grade accuracy, zero-ESR stability, and ON/OFF control in SOT-23-5 - making it optimal for portable systems requiring both precision and power-gating flexibility.
Availability
LP2983AIM5-1.0 is available at Aetrix Electronics and suitable for cellular baseband power, wearable sensor core supply, industrial IoT edge nodes, medical diagnostic handhelds, and portable instrumentation requiring stable component supply across extended temperature and long production lifecycles.
Supply support for LP2983AIM5-1.0 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, specializing in analog, embedded processing, and power management ICs for industrial, automotive, and consumer markets.
The LP2983AIM5-1.0 belongs to TI's micropower LDO family designed specifically for ultra-low-noise, low-ESR-capable voltage regulation in space- and power-constrained portable electronics.
FAQ
What is the minimum input voltage required for LP2983AIM5-1.0 to regulate 1.0 V output at full 150 mA load?
The LP2983AIM5-1.0 requires a minimum input voltage of 2.2 V to maintain regulation at any load, including 150 mA. At 150 mA, its typical dropout is 150 mV, so 1.15 V would theoretically suffice - but the absolute minimum operating VIN is specified as 2.2 V per datasheet Section 6.3. This ensures sufficient headroom for line regulation, PSRR, and thermal margin under worst-case conditions.
How must the ESR pin (pin 4) be connected for stable operation of LP2983AIM5-1.0?
The ESR pin (pin 4) of the LP2983AIM5-1.0 must be connected directly to the negative terminal (ground side) of the ceramic output capacitor - not to the main GND plane. This creates a dedicated low-impedance return path that enables the internal compensation to function correctly with zero-ESR capacitors. Failure to route ESR separately causes instability and potential oscillation, especially at light loads.
Does LP2983AIM5-1.0 support reverse input-output voltage protection?
No, the LP2983AIM5-1.0 does not include reverse input-output voltage protection. Its internal PNP pass transistor contains a parasitic diode from OUT to IN. If VOUT exceeds VIN by >0.7 V, this diode conducts, risking latch-up and damage. TI explicitly recommends adding an external Schottky diode (cathode to IN, anode to OUT) in any application where output voltage may exceed input - such as hot-swap or backup-battery scenarios.
What is the guaranteed output voltage accuracy of LP2983AIM5-1.0 over temperature and load?
The LP2983AIM5-1.0 is an A-grade device with guaranteed output voltage accuracy of ±2.5% over the full −40°C to +125°C junction temperature range and 1 mA to 150 mA load. At 25°C and 1–50 mA load, accuracy is tighter: ±1%. This is confirmed in Electrical Characteristics Table 6.5, where ΔVO is specified as −2.5%/+2.5% under those extended conditions.
Can LP2983AIM5-1.0 be used with a 1 µF ceramic output capacitor?
No - the LP2983AIM5-1.0 requires a minimum 2.2 µF ceramic output capacitor connected between OUT (pin 5) and ESR (pin 4) for guaranteed stability across all loads and temperatures. While 1 µF may appear functional at room temperature, capacitance derating (e.g., >50% loss for Z5U/Y5V dielectrics at 85°C) risks falling below the 2.2 µF minimum, leading to oscillation. TI specifies 2.2 µF as the absolute minimum in Section 8.2.2.1.2.
LP2983AIM5-1.0 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
LP2983AIM5-1.0 FAQ
1.How can I place an order for LP2983AIM5-1.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2983AIM5-1.0 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 LP2983AIM5-1.0 reliable?
The price and inventory of LP2983AIM5-1.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2983AIM5-1.0 is usually 5 days.
3.What payment methods are accepted for LP2983AIM5-1.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2983AIM5-1.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2983AIM5-1.0?
LP2983AIM5-1.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2983AIM5-1.0 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 LP2983AIM5-1.0?
For technical support, including LP2983AIM5-1.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2983AIM5-1.0 requirements.
6.How does Aetrix verify that LP2983AIM5-1.0 is sourced from the original manufacturer or authorized distributors?
All LP2983AIM5-1.0 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 LP2983AIM5-1.0 meets industry standards.
7.What is the process for return or replacement of LP2983AIM5-1.0?
All LP2983AIM5-1.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2983AIM5-1.0, 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 LP2983AIM5-1.0 part is unused and in its original packaging.
Return procedure for LP2983AIM5-1.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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