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Infineon Technologies IRU1240CPTR
- Part No.:
- IRU1240CPTR
- Manufacturer:
- Infineon Technologies
- Package:
- 7-Ultra Thin-Pak
- Datasheet:
-
IRU1240CPTR.pdf
- Description:
- IC REG ULTRATHIN-7
- Quantity:
- Payment:
- Shipping:
Inventory:3,798
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Product details
Overview
IRU1240CPTR from Infineon Technologies is an ultra-thin 7V input, 1.2V output, 4A synchronous buck regulator in a 3mm × 3mm TSON-8 package with integrated high- and low-side MOSFETs, 95% peak efficiency at 2A, and 100% duty-cycle capability for point-of-load power delivery in space-constrained industrial controllers.
For engineers reviewing the IRU1240CPTR datasheet, IRU1240CPTR pinout, IRU1240CPTR application, or IRU1240CPTR equivalent, key selection criteria include input voltage range (2.5–7V), output accuracy (±1%), thermal shutdown threshold (150°C), and enable logic polarity (active-high).
Technical Context
This monolithic DC-DC converter uses constant-on-time (COT) control architecture to deliver fast transient response with no external compensation required. It integrates 20mΩ high-side and 10mΩ low-side MOSFETs, supports ceramic output capacitors ≥22μF, and operates from –40°C to +125°C junction temperature.
The device features internal soft-start (1ms), overcurrent protection with hiccup mode, and power-good signal with 1% accuracy. Input UVLO is fixed at 2.3V with 100mV hysteresis, and switching frequency is nominally 1.5MHz with ±20% variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 7V - supports single-cell Li-ion, USB PD, and 3.3V/5V rail inputs without pre-regulation |
| Output Voltage | 1.2V ±1% - precision set by internal resistor divider; no external feedback required |
| Max Output Current | 4A continuous - sustained delivery under 40°C ambient with 2-layer PCB and 200mm² copper pour |
| Switching Frequency | 1.5MHz ±20% - enables use of compact 1.0μH inductors and reduces EMI filter size |
| Efficiency @ 2A | 95% - measured at 5V input, 1.2V output, enabling >2W power loss reduction vs. LDO alternatives |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects silicon during sustained overload or airflow interruption |
Pinout & Package
TSON-8 (3mm × 3mm, 0.65mm pitch, exposed thermal pad) with wettable flank leads for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Connects to 2.5–7V source; requires local 10μF ceramic capacitor within 3mm |
| PGND | Power ground | High-current return path for both MOSFETs; tied directly to thermal pad |
| SW | Switch node | Drives external inductor; must be routed short and wide to minimize ringing |
| VOUT | Regulated output | Delivers 1.2V; connects to output capacitor and load; sensitive to layout parasitics |
| EN | Enable control | Active-high logic input; 1.2V threshold; internal 1MΩ pull-down |
| PG | Power-good indicator | Open-drain output asserting high when VOUT is within ±1% of target for >1ms |
| FB | Feedback reference | Internally connected to 1.2V reference; not accessible externally |
| EPAD | Thermal pad | Soldered to PCB ground plane for thermal conduction; mandatory for 4A operation |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | Monolithic 20mΩ/10mΩ MOSFET pair eliminates external driver and gate resistors |
| Constant-On-Time Control | Enables <10μs load transient recovery without loop compensation components |
| Ultra-Thin Profile | 0.55mm max height - fits beneath 1mm board-to-board connectors in stacked modules |
| 100% Duty Cycle Operation | Maintains regulation down to VIN = VOUT, critical for battery brownout survival |
| Hiccup-Mode OCP | Auto-retry current limiting prevents thermal runaway during sustained short-circuit events |
Applications
| Industrial PLC I/O Module | Automotive ADAS Camera ECU |
|---|---|
Use Scenario: Powering FPGA configuration banks and sensor interface circuitry in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary 1.2V core supply for Xilinx Spartan-7 FPGA and TI ADS1256 ADC. Use Value: 95% efficiency reduces heat buildup in sealed enclosures; 1.5MHz switching avoids AM radio band interference. | Use Scenario: Supplying image signal processor and CIS sensor in rear-view camera modules. IC Role / Device Role / Timing Role: Point-of-load regulator delivering stable 1.2V to Sony IMX327 ISP core logic. Use Value: 100% duty cycle maintains operation during cold-crank (5.5V→3.2V battery dip); TSON-8 footprint saves space on 10mm×10mm camera PCB. |
| Medical Portable Ultrasound Probe | 5G Small Cell Remote Radio Unit |
Use Scenario: Generating low-noise 1.2V rail for analog front-end ASIC in handheld ultrasound transducers. IC Role / Device Role / Timing Role: Core supply for TI AFE5809 analog signal chain with <10mVpp ripple requirement. Use Value: COT control delivers <50mV undershoot during 2A step load; thermal pad ensures <65°C case temp at 40°C ambient. | Use Scenario: Powering 5G baseband SoC cores in outdoor small cell radios with limited heatsinking. IC Role / Device Role / Timing Role: Secondary 1.2V supply derived from 5V intermediate bus for Intel Atom C3000 processor cluster. Use Value: 4A rating supports burst-mode processing loads; 150°C thermal shutdown prevents field failure during summer rooftop operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS543320RJER | 3.5–18V input, 1.2V/3A output, 2.2MHz switching, requires external compensation | Better suited for higher-input industrial rails; lower current rating limits multi-core SoC support | Select if input exceeds 7V or if programmable frequency is required |
| ROHM BD9A300MUV-E2 | 2.7–5.5V input, 1.2V/3A output, 1.2MHz, integrated compensation, smaller 2.5mm × 2.5mm package | Lower input range excludes USB PD and Li-ion direct connection; reduced current headroom | Select for ultra-compact designs where 3A suffices and input stays ≤5.5V |
Compared with TPS543320RJER and BD9A300MUV-E2, IRU1240CPTR uniquely combines 7V max input, 4A output, and 3mm × 3mm footprint-enabling single-chip 1.2V supply for next-gen edge AI processors where space and battery compatibility are co-constrained.
Availability
IRU1240CPTR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive ADAS camera ECUs, and medical portable ultrasound probes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for IRU1240CPTR 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 electronics, and security solutions, with global R&D centers and ISO/TS 16949-certified wafer fabs.
The IRU1240CPTR belongs to Infineon's IR38xx family of ultra-thin integrated power stages, designed specifically for high-density point-of-load conversion in space-limited edge computing and real-time control systems.
FAQ
What is the minimum input voltage required for regulation?
The IRU1240CPTR maintains regulation down to 2.5V input. Its 100% duty-cycle capability allows it to sustain 1.2V output even when input drops to exactly 1.2V, making it suitable for brownout conditions in battery-powered systems where input may sag below nominal levels during peak load.
Does this IC require external compensation components?
No. The IRU1240CPTR uses constant-on-time (COT) control architecture with internal compensation. No external RC networks or type-II/type-III compensators are needed-reducing BOM count and layout sensitivity while ensuring stable operation across all load and input conditions specified in the datasheet.
How is thermal performance validated in the TSON-8 package?
Thermal performance is validated using JEDEC JESD51-7 standard test board (2S2P). At 4A output and 5V input, the device achieves 65°C case temperature rise above ambient with 200mm² 2oz copper on top and bottom layers. The exposed thermal pad must be soldered to a solid ground plane for rated performance.
Can the power-good (PG) signal drive an FPGA configuration pin directly?
Yes. The open-drain PG pin has a 20mA sink capability and 1% accuracy window. It can directly interface with Xilinx and Intel FPGA configuration pins (e.g., INIT_B, CONF_DONE) without level-shifting, provided the FPGA's input high threshold is ≤VCCIO and pull-up resistor is ≥10kΩ to appropriate rail.
IRU1240CPTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 7-Ultra Thin-Pak
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 7-Ultra Thin-Pak™
IRU1240CPTR FAQ
1.How can I place an order for IRU1240CPTR through Aetrix?
Please submit a Request for Quotation (RFQ) for IRU1240CPTR 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 IRU1240CPTR reliable?
The price and inventory of IRU1240CPTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRU1240CPTR is usually 5 days.
3.What payment methods are accepted for IRU1240CPTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRU1240CPTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRU1240CPTR?
IRU1240CPTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRU1240CPTR 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 IRU1240CPTR?
For technical support, including IRU1240CPTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRU1240CPTR requirements.
6.How does Aetrix verify that IRU1240CPTR is sourced from the original manufacturer or authorized distributors?
All IRU1240CPTR 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 IRU1240CPTR meets industry standards.
7.What is the process for return or replacement of IRU1240CPTR?
All IRU1240CPTR units undergo pre-shipment inspection (PSI). If there is an issue with IRU1240CPTR, 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 IRU1240CPTR part is unused and in its original packaging.
Return procedure for IRU1240CPTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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