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Infineon Technologies IFX30081SJVXUMA1
- Part No.:
- IFX30081SJVXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
IFX30081SJVXUMA1.pdf
- Description:
- IC REG LINEAR POS ADJ 50MA 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:1,420
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Product details
Overview
IFX30081SJVXUMA1 from Infineon Technologies is an adjustable linear voltage regulator delivering up to 50 mA output current with ultra-low 5 µA quiescent current, 2.75 V–42 V input range, and 100 mV typical dropout at full load-designed for long-life battery-powered sensor supplies in fire detection systems.
For engineers reviewing the IFX30081SJVXUMA1 datasheet, IFX30081SJVXUMA1 pinout, IFX30081SJVXUMA1 application, or IFX30081SJVXUMA1 equivalent, key selection criteria include ultra-low IQ for multi-year battery operation, adjustable output (1.2 V to VIN − Vdr), EN-controlled shutdown (<1 µA), thermal/overcurrent protection, and PG-DSO-8 compatibility with 1 µF ceramic output capacitor stability.
Technical Context
The IFX30081SJVXUMA1 implements a bandgap-referenced error amplifier driving a PNP pass transistor, enabling fast transient response and stable regulation with only 1 µF output capacitance (ESR ≤100 Ω). Its enable logic uses an internal pull-down resistor, requiring a high-level signal to activate regulation.
Protection circuitry includes foldback current limiting (triggered at ~50 mA) and thermal shutdown at Tj ≥150 °C, with recovery upon cooldown. Input voltage tolerance extends to 45 V absolute maximum, supporting transient robustness in industrial 24 V and automotive 12 V/24 V supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 5 µA typ. - enables >10-year battery life in 10 µA sleep-mode sensor nodes |
| Input Voltage Range | 2.75 V to 42 V - supports direct connection to Li-SOCl₂, 24 V industrial rails, and unregulated automotive supplies |
| Output Current | 50 mA max - sufficient for analog sensors, low-power MCUs, and smoke detector ionization chambers |
| Dropout Voltage | 100 mV typ. @ 50 mA - maintains regulation down to 1.3 V output when input is 1.4 V |
| Output Accuracy | ±2 % - ensures precise biasing for temperature-sensitive gas sensors and reference circuits |
| Shutdown Current | <1 µA - eliminates standby drain in alarm-silenced or maintenance modes |
| Operating Temp | −40 °C to +125 °C junction - validated for enclosure-mounted fire detectors and outdoor industrial sensors |
Pinout & Package
IFX30081SJVXUMA1 is housed in a PG-DSO-8 (SOIC-8) package with exposed thermal pad, optimized for PCB heat dissipation in space-constrained sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Accepts 2.75–42 V; requires local 100 nF ceramic decoupling to suppress line transients |
| 2 N.C. | No Connect | Internally unconnected; must remain floating or grounded per layout guidelines |
| 3 EN | Enable Control | Active-high logic input with internal pull-down; drives regulator ON/OFF with <1 µA leakage in OFF state |
| 4 GND | Ground Reference | Primary return path for load current and feedback network; connects to thermal pad |
| 5 N.C. | No Connect | Internally unconnected; no external connection permitted |
| 6 N.C. | No Connect | Internally unconnected; no external connection permitted |
| 7 ADJ | Feedback Node | Connects to resistor divider (R1/R2) setting VOUT = 1.25 V × (1 + R1/R2); referenced to internal 1.25 V bandgap |
| 8 OUT | Regulated Output | Delivers adjustable voltage (1.2–VIN−Vdr) to load; requires ≥1 µF ceramic cap with ESR ≤100 Ω |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Quiescent Current | 5 µA typ. enables decade-scale operation on coin-cell or primary lithium batteries |
| Adjustable Output Voltage | 1.2 V to (VIN − 100 mV) via external resistor divider, ±2 % accuracy over temp and line |
| Integrated Protection | Current-limit foldback and thermal shutdown prevent damage during short-circuit or ambient overtemperature |
| Stability with Minimal Capacitance | Guaranteed stable with only 1 µF ceramic output capacitor (ESR ≤100 Ω), reducing BOM count and board area |
| Wide Input Range | 2.75 V–42 V operation accommodates aging batteries, unregulated industrial rails, and transient surges |
Applications
| Fire Detection Sensor Supply | Industrial Wireless Sensor Node |
|---|---|
Use Scenario: Powering ionization chamber and microcontroller in standalone smoke alarms with 10-year lithium thionyl chloride battery. IC Role / Device Role / Timing Role: Adjustable LDO providing stable 3.3 V rail with ultra-low IQ to maximize battery service life. Use Value: 5 µA quiescent current extends battery life beyond 10 years while maintaining ±2 % output accuracy across −40 °C to +85 °C operating range. | Use Scenario: Regulating power for LoRaWAN temperature/humidity sensor node deployed in factory HVAC ducts. IC Role / Device Role / Timing Role: Enable-controlled LDO supplying analog front-end and sub-GHz transceiver from 24 V industrial bus. Use Value: 42 V max input withstands 24 V rail transients; EN pin allows MCU-synchronized power gating to reduce average system current by >95 %. |
| Portable Gas Analyzer Bias | Low-Power RTD Signal Conditioning |
Use Scenario: Providing precision bias voltage to electrochemical gas sensing electrodes in handheld CO/H₂S detectors. IC Role / Device Role / Timing Role: Adjustable LDO delivering 1.8 V or 2.5 V reference-grade supply with minimal noise and drift. Use Value: ±2 % output accuracy and 100 mV dropout ensure stable electrode polarization even as battery voltage declines from 3.6 V to 2.8 V. | Use Scenario: Powering 2-wire RTD bridge and instrumentation amplifier in battery-operated condition monitoring module. IC Role / Device Role / Timing Role: Low-noise, low-drift LDO supplying excitation current source and analog signal chain. Use Value: Ultra-low IQ preserves battery capacity for periodic wake-up measurements; thermal shutdown prevents overheating during extended self-test cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLD1117SV33 | Fixed 3.3 V output; 15 µA IQ; 40 V max input; 1 A output capability | Not adjustable; higher IQ; intended for higher-current industrial control I/O modules | Select only if fixed 3.3 V output suffices and >50 mA load current is required |
| MAX1726EUK33+T | Fixed 3.3 V output; 3.5 µA IQ; 28 V max input; 250 mA output; no EN pin | Lacks enable control and adjustability; better IQ but narrower input range and no shutdown mode | Prefer where ultra-low IQ is critical but output voltage and control flexibility are secondary |
Compared with TLD1117SV33 and MAX1726EUK33+T, IFX30081SJVXUMA1 uniquely combines adjustability, 5 µA IQ, 42 V input, and EN control-making it optimal for battery-powered, multi-voltage sensor systems requiring long-term autonomy and design reuse across variants.
Availability
IFX30081SJVXUMA1 is available at Aetrix Electronics and suitable for fire detection systems, industrial wireless sensors, portable gas analyzers, and low-power RTD signal conditioning requiring stable component supply with guaranteed long-lifecycle availability.
Supply support for IFX30081SJVXUMA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and ISO 14001.
The IFX30081SJVXUMA1 belongs to Infineon's IFX300xx family of ultra-low-IQ linear regulators, engineered specifically for energy-constrained, wide-input industrial and safety-critical sensor applications-not automotive qualified.
FAQ
What is the minimum output capacitor value required for stable operation?
The IFX30081SJVXUMA1 requires a minimum 1 µF ceramic output capacitor with ESR ≤100 Ω (measured at 10 kHz) across the full operating temperature and load range. This value accounts for worst-case ±30 % capacitance tolerance and ensures phase margin >45° under all conditions specified in the datasheet.
Can the IFX30081SJVXUMA1 be used in automotive applications?
No-the IFX30081SJVXUMA1 is explicitly not qualified for automotive or transportation applications per its datasheet. It lacks AEC-Q100 qualification and is not manufactured to automotive reliability standards. For automotive use, Infineon recommends TLx-series regulators such as TLE4274 or TLS850B2.
How does the ADJ pin set the output voltage?
The ADJ pin connects to the center node of an external resistor divider between OUT and GND. With an internal 1.25 V reference, VOUT = 1.25 V × (1 + R1/R2), where R1 is from OUT to ADJ and R2 is from ADJ to GND. The 2 % output accuracy includes reference tolerance, resistor ratio error, and temperature drift.
What happens during thermal shutdown?
When junction temperature exceeds 150 °C, the IFX30081SJVXUMA1 disables the pass transistor and halts regulation. Output voltage drops to near zero, and quiescent current remains below 1 µA. Regulation resumes automatically once Tj falls below ~140 °C, with no latch-up or manual reset required.
IFX30081SJVXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- 41.7V
- Voltage Dropout (Max):
- 0.3V @ 50mA
- Current - Output:
- 50mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 11 µA
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8
IFX30081SJVXUMA1 FAQ
1.How can I place an order for IFX30081SJVXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for IFX30081SJVXUMA1 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 IFX30081SJVXUMA1 reliable?
The price and inventory of IFX30081SJVXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX30081SJVXUMA1 is usually 5 days.
3.What payment methods are accepted for IFX30081SJVXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX30081SJVXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IFX30081SJVXUMA1?
IFX30081SJVXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IFX30081SJVXUMA1 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 IFX30081SJVXUMA1?
For technical support, including IFX30081SJVXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX30081SJVXUMA1 requirements.
6.How does Aetrix verify that IFX30081SJVXUMA1 is sourced from the original manufacturer or authorized distributors?
All IFX30081SJVXUMA1 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 IFX30081SJVXUMA1 meets industry standards.
7.What is the process for return or replacement of IFX30081SJVXUMA1?
All IFX30081SJVXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX30081SJVXUMA1, 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 IFX30081SJVXUMA1 part is unused and in its original packaging.
Return procedure for IFX30081SJVXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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