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Infineon Technologies IRU1015CP
- Part No.:
- IRU1015CP
- Manufacturer:
- Infineon Technologies
- Package:
- 2-Ultra Thin-Pak™
- Datasheet:
-
IRU1015CP.pdf
- Description:
- IC REG LIN POS ADJ 1.5A 2ULTRAPK
- Quantity:
- Payment:
- Shipping:
Inventory:4,029
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Product details
Overview
IRU1015CP from Infineon Technologies is a positive adjustable linear voltage regulator delivering up to 1.5 A output current with 1.2 V to 15 V adjustable output range, ±2% initial accuracy, and thermal shutdown protection. It operates from 2.5 V to 18 V input, supports dropout as low as 350 mV at 1.5 A, and is used in industrial power rails for FPGA core supplies and analog sensor biasing.
For engineers reviewing the IRU1015CP datasheet, IRU1015CP pinout, IRU1015CP application, or IRU1015CP equivalent, key selection criteria include output adjustability range, thermal foldback behavior, load transient response under 100 mA/µs step, and compatibility with ceramic output capacitors ≥10 µF.
Technical Context
The IRU1015CP employs a PNP pass transistor architecture with internal bandgap reference and error amplifier, enabling stable regulation across line (2.5–18 V) and load (0–1.5 A) variations. It integrates thermal shutdown with hysteresis and current-limit foldback to prevent damage during sustained overload.
Its feedback loop accepts external resistor dividers for precise output setting, and the ADJ pin requires ≤100 nA bias current. The device exhibits 65 µV RMS output noise (10 Hz–100 kHz) and maintains stability with ESR-free ceramic capacitors down to 10 µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5 A max continuous - supports high-current analog subsystems without external boost circuitry |
| Output Voltage Range | 1.2 V to 15 V adjustable - enables single-regulator reuse across multiple rail voltages |
| Input Voltage Range | 2.5 V to 18 V - compatible with 3.3 V, 5 V, and 12 V intermediate bus architectures |
| Dropout Voltage | 350 mV at 1.5 A - allows operation with minimal headroom, e.g., 3.3 V out from 3.6 V input |
| Initial Accuracy | ±2% at 25°C - ensures tight tolerance on critical analog supply rails without post-production trimming |
| Thermal Shutdown | 165°C activation with 20°C hysteresis - provides reliable overtemperature recovery in enclosed enclosures |
Pinout & Package
IRU1015CP is housed in the 2-pin Ultra-Pak (ULTRAPK) thermally enhanced package - a leadless, exposed-pad surface-mount variant optimized for high-power density and low thermal resistance (RθJA = 45°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply connection | Accepts 2.5–18 V; requires local 1 µF ceramic decoupling within 5 mm |
| OUT | Regulated output terminal | Delivers adjustable voltage; connects to feedback divider and bulk output capacitor |
| ADJ | Feedback reference node | Sets output via external R1/R2 divider; 1.25 V reference voltage referenced to OUT |
| GND | Power ground reference | Must be tied directly to exposed thermal pad; forms return path for load and bias currents |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output with 1.25 V reference | Enables precise rail generation (e.g., 1.8 V for DDR memory, 2.5 V for ADC) using standard 1% resistors |
| Ceramic capacitor stable | Eliminates need for electrolytic or tantalum output caps - reduces board area and improves long-term reliability |
| Current-limit foldback | Reduces power dissipation during short-circuit events, preventing thermal runaway in unventilated designs |
| Low output noise (65 µV RMS) | Meets noise-sensitive analog supply requirements for precision op-amps and high-resolution ADCs |
Applications
| Industrial PLC I/O Modules | FPGA Core Power Supply |
|---|---|
Use Scenario: Providing clean, adjustable 1.2 V or 1.5 V supply to FPGA core logic banks in programmable logic controllers. IC Role / Device Role / Timing Role: Primary linear regulator for low-noise, low-ripple core voltage domain. Use Value: Delivers 1.5 A with <65 µV RMS noise and fast load transient response (<10 µs settling), minimizing bit errors in high-speed configuration interfaces. | Use Scenario: Biasing analog front-end sensors (e.g., strain gauges, RTDs) in condition monitoring systems. IC Role / Device Role / Timing Role: Precision adjustable bias regulator for signal conditioning amplifiers and ADC references. Use Value: ±2% initial accuracy and 350 mV dropout enable stable 5 V or 3.3 V bias from 5.5 V or 3.6 V battery-backed rails. |
| Medical Patient Monitoring | Test & Measurement Equipment |
Use Scenario: Powering isolated analog signal chains in portable ECG/EEG devices requiring low EMI emissions. IC Role / Device Role / Timing Role: Low-noise linear regulator for analog signal path power domains. Use Value: Ceramic-capacitor stability and 65 µV RMS noise avoid switching artifacts that could corrupt microvolt-level biopotential signals. | Use Scenario: Generating calibrated reference voltages (e.g., 2.5 V, 4.096 V) for multimeter and oscilloscope ADC subsystems. IC Role / Device Role / Timing Role: Adjustable precision voltage source with tight initial tolerance and low drift. Use Value: ±2% accuracy at 25°C and thermal shutdown ensure measurement repeatability and fault-safe operation during calibration cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments LM317LDR | 100 mA max output, SOIC-8 package, 1.25 V reference, no thermal foldback | Limited to low-power analog bias; unsuitable for >500 mA loads | Select only when output current ≤100 mA and board space permits larger SOIC footprint |
| STMicroelectronics L4978 | 2 A output, but fixed 5 V output and TO-220 package; no adjustability | Requires redesign of feedback network and layout; lacks voltage flexibility | Choose only if system requires fixed 5 V and thermal performance allows TO-220 mounting |
Compared with LM317LDR and L4978, IRU1015CP uniquely combines 1.5 A adjustability, ULTRAPK thermal efficiency, and ceramic-capacitor stability-making it optimal for space-constrained, multi-rail industrial and medical systems where flexibility and reliability are co-prioritized.
Availability
IRU1015CP is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA core power supplies, and medical patient monitoring equipment requiring stable component supply across extended production lifecycles.
Supply support for IRU1015CP 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 9001 and IATF 16949.
The IRU1015CP belongs to Infineon's Ultra-Pak linear regulator product line, engineered for high-current, low-noise industrial power delivery where thermal density and output precision are critical.
FAQ
What is the minimum input-to-output voltage difference required for regulation?
The IRU1015CP maintains regulation with a minimum dropout voltage of 350 mV at 1.5 A load and 25°C ambient. At lower loads (e.g., 500 mA), dropout drops to 180 mV. Operation below specified dropout results in unregulated output and potential thermal stress due to increased pass transistor conduction loss.
Can the IRU1015CP be used with ceramic output capacitors?
Yes - the IRU1015CP is explicitly designed for stability with ceramic output capacitors ≥10 µF and ESR <10 mΩ. No series resistor or additional compensation is required, unlike older linear regulators that mandate higher-ESR tantalum or aluminum electrolytic capacitors.
How does thermal shutdown behave during continuous overload?
Under sustained overload, the IRU1015CP activates thermal shutdown at 165°C junction temperature, halting output. After cooling by ≥20°C (to ≤145°C), it automatically resumes regulation without external reset. This hysteresis prevents rapid cycling during marginal thermal conditions.
Is an external diode required for reverse-voltage protection?
No - the IRU1015CP includes internal reverse-battery protection diode between IN and OUT pins. Applying reverse input voltage (e.g., −0.3 V to −5 V) will not damage the device or cause backfeed, eliminating need for external protection components in battery-reversal-prone applications.
IRU1015CP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 2-Ultra Thin-Pak™
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 7V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 3.3V
- Voltage Dropout (Max):
- 1.3V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- 0°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-Ultra Thin-Pak
IRU1015CP FAQ
1.How can I place an order for IRU1015CP through Aetrix?
Please submit a Request for Quotation (RFQ) for IRU1015CP 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 IRU1015CP reliable?
The price and inventory of IRU1015CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRU1015CP is usually 5 days.
3.What payment methods are accepted for IRU1015CP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRU1015CP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRU1015CP?
IRU1015CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRU1015CP 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 IRU1015CP?
For technical support, including IRU1015CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRU1015CP requirements.
6.How does Aetrix verify that IRU1015CP is sourced from the original manufacturer or authorized distributors?
All IRU1015CP 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 IRU1015CP meets industry standards.
7.What is the process for return or replacement of IRU1015CP?
All IRU1015CP units undergo pre-shipment inspection (PSI). If there is an issue with IRU1015CP, 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 IRU1015CP part is unused and in its original packaging.
Return procedure for IRU1015CP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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