IRS9102CXTSA1 - 12A VCSEL/LED Laser Driver IC | Infineon
料号： IRS9102CXTSA1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 |
IRS9102CXTSA1 概述
A laser driver is a specialized power-management IC that converts a low-current logic signal into a precisely controlled high-current pulse that drives a laser diode or LED. Within the broader taxonomy, the IRS9102CXTSA1 belongs to the laser driver sub-category of power-management ICs, which itself sits inside display/lighting drivers. It differs from a generic LED driver by offering the very fast, low-jitter edge rates required for sub-nanosecond optical pulses used in 3D depth sensing.
Key features include a wide supply voltage range of 2.52 V to 3.7 V (single Li-ion cell compatible), peak laser current up to 12 A, modulation bandwidth of 250 MHz, integrated fail-safe and eye-safety logic, and a small 3.0 mm × 3.0 mm PG-TSNP-10-4 footprint. The device supports both VCSEL and edge-emitting laser diodes as well as high-power LEDs, with programmable pulse widths and current setpoints set through a serial control interface.
On the architecture side, the IRS9102CXTSA1 combines a fast gate driver, a high-current FET output stage, and a closed-loop current regulator that holds the optical output stable over temperature. The 250 MHz bandwidth allows sub-nanosecond pulse shaping required by emerging iToF depth sensors, while the fail-safe block monitors voltage, current, and temperature conditions and disables the laser output on fault.
Typical applications include mobile 3D depth / face-recognition cameras, AR/VR gesture and eye-tracking modules, robotics LiDAR, industrial laser distance sensors, and structured-light illuminators. The compact package and low BOM count make it equally suited to high-volume consumer phones and industrial LiDAR sub-assemblies.
When designing with this part, place the decoupling capacitors as close as possible to the VIN pins and keep the high-current loop area to a minimum to preserve pulse-edge fidelity. The fail-safe output should be routed to the image sensor's enable pin so a fault immediately disables illumination.
This page synthesizes distributor pricing, application context, and design notes for the IRS9102CXTSA1 - content not found in the manufacturer datasheet alone, optimized for engineers sourcing 3D-sensing illumination drivers.
直接替换替代料： IRS9102CXTSA1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： IRS9102CXTSA1 （相同外形与封装尺寸） ——差异在于 Package.
快速对比工具——选择替代料号进行并排对比：
IRS9102C
✅ 直接替换📋 参考替代料（不在目录中）
ILD8150EXUMA1
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.15 / 个
查看数据手册 →IRS9102CXTSA1 最大额定值与电气特性
| 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 |
| 封装 | PG-TSNP-10-4 (3.0 mm x 3.0 mm) |
| 安装类型 | 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 状态 | Compliant |
| Pulse Width Control | Programmable via serial interface |
IRS9102CXTSA1 引脚配置
| 引脚 1 | VIN — Supply voltage input (2.52 V to 3.7 V) |
| 引脚 2 | GND — Ground return |
| 引脚 3 | EN — Enable input (active high) |
| 引脚 4 | SDA — Serial data (control interface) |
| 引脚 5 | SCL — Serial clock (control interface) |
| 引脚 6 | FLT — Fault output (open-drain, fail-safe indicator) |
| 引脚 7 | LASER+ — Laser diode anode connection |
| 引脚 8 | LASER- — Laser diode cathode / current sink |
| 引脚 9 | ISET — Current setpoint reference |
| 引脚 10 | EP — Exposed thermal pad (connect to GND) |
典型应用
IRS9102CXTSA1 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： IRS9102CXTSA1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
| 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 |
关键差异点
- Purpose-built for iToF with 250 MHz modulation bandwidth （对比 Generic LED drivers)
- 12 A peak laser current in a 3.0 x 3.0 mm package （对比 Discrete MOSFET + gate-driver solutions)
- Integrated fail-safe logic aligned with REAL3 sensor family （对比 Laser drivers without fail-safe)
设计说明
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.
合规信息
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.
