IRS9102CXTSA1 - 12A VCSEL/LED Laser Driver IC | Infineon
MPN: IRS9102CXTSA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.77 | $1.77 |
| 10 | $1.59 | $15.90 |
| 100 | $1.42 | $142.00 |
| 500 | $1.25 | $625.00 |
| 1,000 | $1.1 | $1,100.00 |
| 3,000 | $0.98 | $2,940.00 |
Drop-in alternatives for IRS9102CXTSA1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
IRS9102C
β Drop-Inπ Reference alternative (not in catalog)
ILD8150EXUMA1
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.15 / Unit
View Datasheet βIRS9102CXTSA1 Maximum Ratings & Electrical Characteristics
| Product Type | Laser Diode / LED Driver IC |
| Number of Channels | 1 |
| Supply Voltage Range | 2.52 V to 3.7 V |
| Peak Laser Output Current | 12 A |
| Modulation Bandwidth | 250 MHz |
| Supported Loads | VCSEL, edge-emitting laser diode, high-power LED |
| Package | PG-TSNP-10-4 (3.0 mm x 3.0 mm) |
| Mounting Type | Surface Mount |
| Integrated Fail-Safe | Yes (over-voltage, over-current, over-temperature) |
| Primary Application | Indirect Time-of-Flight (iToF) image sensors |
| Compatible Sensor Family | Infineon REAL3 iToF image sensors |
| RoHS Status | Compliant |
| Pulse Width Control | Programmable via serial interface |
IRS9102CXTSA1 Pin Configuration
| Pin 1 | VIN β Supply voltage input (2.52 V to 3.7 V) |
| Pin 2 | GND β Ground return |
| Pin 3 | EN β Enable input (active high) |
| Pin 4 | SDA β Serial data (control interface) |
| Pin 5 | SCL β Serial clock (control interface) |
| Pin 6 | FLT β Fault output (open-drain, fail-safe indicator) |
| Pin 7 | LASER+ β Laser diode anode connection |
| Pin 8 | LASER- β Laser diode cathode / current sink |
| Pin 9 | ISET β Current setpoint reference |
| Pin 10 | EP β Exposed thermal pad (connect to GND) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
IRS9102CXTSA1 is suitable for 6 applications: Mobile 3D Depth / Face-Recognition Camera, AR/VR Gesture and Eye-Tracking Modules, Robotics LiDAR Front-End, Industrial Laser Distance Sensor (LDS), Structured-Light Illuminator for 3D Scanning, Automotive In-Cabin Monitoring (Driver Drowsiness).
Mobile 3D Depth / Face-Recognition Camera
The IRS9102CXTSA1 drives the VCSEL illuminator in a smartphone face-recognition or front-facing 3D depth camera, paired with Infineon's REAL3 iToF image sensor. Its 12 A peak laser current produces enough optical power for a 1-2 m ranging envelope at eye-safe pulse energies, while the 250 MHz modulation bandwidth supports the sub-nanosecond pulses iToF requires for unambiguous phase measurement. The 2.52 V to 3.7 V supply range matches the phone's Li-ion cell directly, removing an external boost converter and saving precious PCB area in the optical module.
Recommended
AR/VR Gesture and Eye-Tracking Modules
Inside AR/VR headsets and controllers, the IRS9102CXTSA1 powers the structured-light or iToF illuminator used for hand gesture tracking, eye tracking, and inside-out depth mapping. The 250 MHz modulation bandwidth preserves the sharp optical edges that depth algorithms need for sub-millimeter precision, and the 12 A peak current supports the VCSEL arrays typically used in these compact optical engines. The 3.0 mm x 3.0 mm PG-TSNP-10-4 package fits inside the slim optical stack of wearable devices, where every cubic millimeter counts.
Recommended
Robotics LiDAR Front-End
The IRS9102CXTSA1 is used in short- to mid-range LiDAR front-ends on autonomous mobile robots, AGVs, and service robots. Its 12 A peak current can drive high-power edge-emitting laser diodes or VCSEL arrays for time-of-flight ranging, and the 250 MHz modulation allows pulse widths below 1 ns for centimeter-scale depth resolution. The integrated fail-safe block protects the laser and signals the robot's safety controller on fault, supporting ISO 13849 and IEC 61508 functional-safety goals common in robotics.
Recommended
Industrial Laser Distance Sensor (LDS)
In industrial laser distance sensors used for level measurement, positioning, and object detection, the IRS9102CXTSA1 drives the laser diode that emits the ranging pulse. The 2.52 V to 3.7 V supply range allows the sensor to be powered from industrial 3.3 V rails, while the fail-safe logic ensures the laser is disabled on fault, supporting IEC 60825-1 laser-safety compliance. The serial control interface enables factory calibration of the current setpoint against the installed optics.
Recommended
Structured-Light Illuminator for 3D Scanning
Handheld and bench-top 3D scanners use the IRS9102CXTSA1 to drive the VCSEL or laser projector that casts a coded pattern onto the scanned object. The 12 A peak current drives high-brightness VCSEL arrays at the pulse energies needed for short-range structured-light projection, while the 250 MHz bandwidth lets the system modulate patterns rapidly for real-time scanning. The compact PG-TSNP-10-4 footprint fits inside the slim projector housing typical of modern 3D scanners.
Recommended
Automotive In-Cabin Monitoring (Driver Drowsiness)
The IRS9102CXTSA1 is used in driver-monitoring systems that detect drowsiness or distraction via 3D depth imaging of the driver's face. The 12 A peak current and 250 MHz modulation support VCSEL-based iToF illumination at the eye-safe power levels required for in-cabin use, while the fail-safe logic ensures the laser is automatically disabled on fault, supporting automotive functional-safety requirements. The 3.0 mm x 3.0 mm package eases integration into the camera module behind the steering wheel.
Recommended
Recommended Products Summary
Engineering reference data for IRS9102CXTSA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IRS9102C | ILD8150EXUMA1 |
|---|---|---|---|
| Brand | Infineon | Infineon | Infineon |
| Package | PG-TSNP-10-4 (3.0 x 3.0 mm) | PG-TSNP-10-4 - same | PG-TSNP-10-4 - same |
| Peak Output Current | 12 A | 12 A | ~1.5 A |
| Modulation Bandwidth | 250 MHz | 250 MHz | [DATA_NEEDED] |
| Supply Voltage Range | 2.52 V to 3.7 V | 2.52 V to 3.7 V | Up to 40 V (LED driver class) |
| Fail-Safe Protection | Yes (OV / OC / OT) | Yes (OV / OC / OT) | Yes (LED-specific protection) |
| Primary Application | iToF Lasers / LiDAR | iToF Lasers / LiDAR | General LED lighting |
| Unit Price (1 pc, as of 2026-09-14) | $1.77 | Similar (contact Infineon) | Similar range |
Key Differentiators
- Purpose-built for iToF with 250 MHz modulation bandwidth (vs Generic LED drivers)
- 12 A peak laser current in a 3.0 x 3.0 mm package (vs Discrete MOSFET + gate-driver solutions)
- Integrated fail-safe logic aligned with REAL3 sensor family (vs Laser drivers without fail-safe)
Design Notes
Place the input decoupling capacitors (typically 10 uF ceramic + 100 nF) as close as possible to the VIN pin and the exposed thermal pad. The high-current loop from VIN through the laser diode and back to GND must be kept as small as possible in area to preserve the 250 MHz pulse-edge fidelity required by iToF ranging. Use a solid ground plane on the top layer directly under the PG-TSNP-10-4 package, and stitch the EP pad with at least 5 thermal vias to the inner ground plane.
Always wire the FLT (fault) output to the image sensor's illumination-enable input so a fault detected by the IRS9102CXTSA1 fail-safe block immediately disables ranging. Never leave the fault output floating - a stuck-at-fault condition must be visible to the host. Estimated: the fault-detection response time is on the order of microseconds, which is fast enough to prevent laser emission beyond the eye-safety window on most fault types.
At 12 A peak with a typical VCSEL forward voltage of 2 V and a duty cycle of a few percent, the average power dissipation is well below 1 W and the PG-TSNP-10-4 package handles it without a heatsink. However, if the design uses a higher-duty-cycle mode (for example, continuous-wave ranging), verify junction temperature against the datasheet thermal resistance (theta_JA) and add a copper pour under the exposed pad if the device approaches 70 C ambient.
Compliance Information
RoHS and lead-free confirmed via Infineon product page and DigiKey listing. AEC-Q100 qualification is not claimed for this consumer-targeted variant; for automotive in-cabin monitoring, verify the latest Infineon automotive-grade status. Halogen-free status not explicitly stated in the verified data.
