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Texas Instruments LP2983IM5-1.0
- Part No.:
- LP2983IM5-1.0
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LP2983IM5-1.0.pdf
- Description:
- IC REG LINEAR 1V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,714
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Product details
Overview
LP2983IM5-1.0 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), 2.2 V to 16 V input range, and stable operation with zero-ESR ceramic capacitors. It serves as a precision power supply for ultra-low-voltage digital cores in portable electronics.
For engineers reviewing the LP2983IM5-1.0 datasheet, LP2983IM5-1.0 pinout, LP2983IM5-1.0 application, or LP2983IM5-1.0 equivalent, key selection criteria include dropout performance at 1.0 V output, ON/OFF control timing thresholds, ground current vs. load profile, and ESR-pin capacitor routing requirements.
Technical Context
The LP2983IM5-1.0 uses a vertically integrated PNP pass transistor architecture enabling 825 µA typical ground current at 150 mA load and 75 µA at 1 mA load. Its internal ESR-sense path (pin 4) enables stability with ceramic capacitors down to 0 Ω ESR, eliminating need for tantalum or aluminum electrolytic output caps.
It integrates thermal shutdown and foldback current limiting, with ON/OFF pin requiring ≥1.4 V (25°C) or ≥1.6 V (–40°C to +125°C) to enable regulation and ≤0.1 V (25°C) or ≤0.05 V (full temp range) to enter <12 µA shutdown mode. Line regulation is 0.01%/V typical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0 V ±1% (A-grade, 1 mA–50 mA, 25°C) |
| Max Output Current | 150 mA continuous; peak output current 250 mA when VOUT ≥ 0.95 V |
| Input Voltage Range | 2.2 V to 16 V operating; minimum VIN = 2.05 V (25°C) to maintain regulation |
| Ground Current | 825 µA typical at 150 mA load; 75 µA at 1 mA load; ≤12 µA in shutdown |
| Output Capacitor Support | Stable with ≥2.2 µF ceramic capacitor connected between OUT (pin 5) and ESR (pin 4); supports zero-ESR |
| Ripple Rejection | 65 dB at 1 kHz with 2.2 µF output capacitor |
| Operating Temp Range | –40°C to +125°C junction temperature |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | Accepts 2.2 V–16 V; connects to input capacitor (≥1 µF) within 1 cm of pin |
| 2 - GND | Ground reference | Device substrate connection; return path for input cap, ON/OFF pull-down, and ESR pin |
| 3 - ON/OFF | Enable/disable control input | Logic-high (>1.4 V) enables output; logic-low (<0.1 V) disables output and reduces IGND to ≤12 µA |
| 4 - ESR | Low-side ESR sense terminal | Must be tied directly to negative terminal of ceramic output capacitor; enables zero-ESR stability |
| 5 - OUT | Regulated output | Delivers fixed 1.0 V; connects to positive terminal of output capacitor (≥2.2 µF, ceramic, between OUT and ESR) |
Key Features
| Feature | Design Value |
|---|---|
| Zero-ESR ceramic capacitor support | Enables use of small, reliable, low-cost X7R/Z5U ceramics without series resistance; eliminates ESR-related instability |
| Micropower ground current | 825 µA at full 150 mA load ensures minimal battery drain in always-on portable systems |
| High-accuracy A-grade output | ±1% tolerance over 1 mA–50 mA load at 25°C meets tight core-voltage requirements for modern SoCs and FPGAs |
| Integrated thermal & current protection | Foldback current limiting and thermal shutdown prevent damage during overload or poor PCB thermal design |
| Low-noise regulated output | 60 µV RMS noise (300 Hz–50 kHz) and 65 dB ripple rejection support noise-sensitive analog/RF subsystems |
Applications
| Cellular Phone Baseband | Wearable Sensor Hub |
|---|---|
|
Use Scenario: Powering ARM Cortex-M4 core and integrated ADC/DAC in LTE modem subsystem. IC Role / Device Role / Timing Role: Primary 1.0 V LDO supplying digital core rail with fast transient response to burst-mode processing. Use Value: 250 mA peak current capability and 65 dB ripple rejection maintain clean supply during RF transmit bursts. |
Use Scenario: Regulating power for ultra-low-power motion sensor fusion engine in smartwatch. IC Role / Device Role / Timing Role: Always-on 1.0 V supply enabling sub-10 µA sleep current while retaining real-time interrupt wake-up capability. Use Value: 75 µA ground current at 1 mA load and <12 µA shutdown current extend coin-cell battery life beyond 12 months. |
| Medical Glucose Monitor | Industrial IoT Edge Node |
|
Use Scenario: Providing stable 1.0 V bias to precision electrochemical sensor interface and low-noise op-amps. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from digital switching noise via dedicated ceramic capacitor routing. Use Value: 60 µV RMS output noise and zero-ESR stability ensure <0.1% measurement accuracy in critical diagnostic readings. |
Use Scenario: Powering LoRaWAN transceiver MCU and external flash memory in remote environmental sensor node. IC Role / Device Role / Timing Role: Single 1.0 V rail supporting both high-current TX pulses and deep-sleep microamp operation. Use Value: ON/OFF pin allows host MCU to gate LP2983IM5-1.0 during sleep, reducing system quiescent current to <2 µA total. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-voltage LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSS721AIDR | 1.0 V fixed, 150 mA, but requires ≥5 µF output capacitance and 10–300 mΩ ESR; no ESR pin | Lacks zero-ESR support and ON/OFF control; unsuitable for space-constrained ceramic-only designs | Choose only if existing design uses higher-ESR tantalum caps and no enable functionality is needed |
| TPS7A0510PDBVR | 1.0 V fixed, 200 mA, 1.4 µA quiescent current, but minimum input voltage 1.8 V; no ESR pin | Lower IQ benefits battery life, but cannot operate below 1.8 V input-fails in brownout scenarios where LP2983IM5-1.0 sustains regulation down to 2.05 V | Select when ultra-low IQ dominates over wide VIN range; verify input never drops below 1.8 V |
Compared with TSS721AIDR and TPS7A0510PDBVR, the LP2983IM5-1.0 uniquely combines zero-ESR ceramic compatibility, ON/OFF control, and 2.2 V minimum input-enabling robust, miniaturized power delivery in brownout-prone portable systems where other regulators require layout redesign or derating.
Availability
LP2983IM5-1.0 is available at Aetrix Electronics and suitable for cellular phone baseband, wearable sensor hub, medical glucose monitor, industrial IoT edge node, and ultra-low-power microcontroller applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LP2983IM5-1.0 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 power management solutions for industrial, automotive, and consumer markets.
The LP2983 product line delivers micropower, high-accuracy LDOs optimized for ≤1.2 V outputs in space-constrained portable electronics-prioritizing low ground current, zero-ESR capacitor compatibility, and thermal robustness in SOT-23 packages.
FAQ
What is the minimum input voltage required for LP2983IM5-1.0 to maintain 1.0 V regulation?
The LP2983IM5-1.0 requires a minimum input voltage of 2.05 V at 25°C and 2.2 V across –40°C to +125°C to sustain regulated 1.0 V output. This headroom accounts for dropout voltage and internal reference stability; operation below this threshold results in unregulated output collapse.
How must the output capacitor be connected for LP2983IM5-1.0 stability?
The output capacitor for LP2983IM5-1.0 must be a ceramic type (≥2.2 µF) connected directly between the OUT pin (pin 5) and ESR pin (pin 4)-not to GND. This configuration leverages the internal ESR-sense path to ensure stability down to zero ohms ESR, a requirement unique to this regulator family.
Does LP2983IM5-1.0 support active shutdown, and what is its quiescent current in that state?
Yes, LP2983IM5-1.0 supports active shutdown via the ON/OFF pin (pin 3). When pulled to ≤0.05 V over –40°C to +125°C, the device enters shutdown with ground current ≤12 µA, making it suitable for battery-powered systems requiring ultra-low standby power.
What is the output voltage accuracy specification for LP2983IM5-1.0 under full load and temperature range?
The LP2983IM5-1.0 is an A-grade device with ±1% output voltage accuracy at 1 mA–50 mA load and 25°C. Over –40°C to +125°C junction temperature and 1 mA–150 mA load, accuracy degrades to ±2.5%, as specified in the Electrical Characteristics table of the SNVS170D datasheet.
Can LP2983IM5-1.0 be used with input voltages above 12 V, and what protection features apply?
Yes, LP2983IM5-1.0 supports input voltages up to 16 V maximum. It includes overtemperature shutdown and foldback current limiting to protect against thermal runaway and short-circuit faults. Absolute maximum input rating is 16 V; exceeding this risks permanent damage per Absolute Maximum Ratings.
LP2983IM5-1.0 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
LP2983IM5-1.0 FAQ
1.How can I place an order for LP2983IM5-1.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2983IM5-1.0 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 LP2983IM5-1.0 reliable?
The price and inventory of LP2983IM5-1.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2983IM5-1.0 is usually 5 days.
3.What payment methods are accepted for LP2983IM5-1.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2983IM5-1.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2983IM5-1.0?
LP2983IM5-1.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2983IM5-1.0 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 LP2983IM5-1.0?
For technical support, including LP2983IM5-1.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2983IM5-1.0 requirements.
6.How does Aetrix verify that LP2983IM5-1.0 is sourced from the original manufacturer or authorized distributors?
All LP2983IM5-1.0 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 LP2983IM5-1.0 meets industry standards.
7.What is the process for return or replacement of LP2983IM5-1.0?
All LP2983IM5-1.0 units undergo pre-shipment inspection (PSI). If there is an issue with LP2983IM5-1.0, 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 LP2983IM5-1.0 part is unused and in its original packaging.
Return procedure for LP2983IM5-1.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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