| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
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Semtech |
IC LASER DRV 11.3 GBS 3.3V 32QFN |
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Laser drivers in Power Management Integrated Circuits (PMICs) are specialized electronic components designed to control and power laser diodes. They regulate current flow to maintain stable laser output, enable precise modulation, and protect against electrical faults. These drivers are critical in applications requiring high-speed optical signal transmission, precision sensing, and industrial processing.
| Type | Functional Features | Application Examples |
|---|---|---|
| Continuous-Wave (CW) Drivers | Provide constant current for steady-state laser operation | Fiber optic communication systems |
| Pulsed Laser Drivers | Generate high-current pulses for pulsed laser operation | LIDAR systems, laser rangefinders |
| Modulating Drivers | Support analog/digital modulation up to GHz frequencies | High-speed data transmission |
| Tunable Drivers | Allow wavelength adjustment through current/temperature control | Spectroscopy equipment |
Typical laser driver architecture includes: - Input power conditioning circuitry - Precision current source with <0.1% regulation - High-speed modulation path (up to 25 Gbps) - Thermal protection and overcurrent detection - Laser diode interface with EMI shielding Advanced packages integrate digital control interfaces (I2C, SPI) and diagnostic feedback systems.
| Parameter | Importance | Typical Range |
|---|---|---|
| Output Current Range | Determines laser power level | 10mA - 2.5A |
| Modulation Bandwidth | Defines data transmission speed | DC - 28 GHz |
| Current Noise Density | Affects optical signal purity | <5 nA/ Hz |
| Thermal Shutdown Threshold | Protects laser diode integrity | 125 C - 150 C |
| Power Efficiency | Impacts system thermal management | 75% - 92% |
| Manufacturer | Product Series | Key Features |
|---|---|---|
| Analog Devices | ADN284x | 25 Gbps modulation, integrated TEC control |
| Texas Instruments | LMT84 | 4-channel driver for LiDAR, 3.5A peak current |
| STMicroelectronics | LD55xx | Digital diagnostic interface, 1.2A output |
| Infineon | IRS2975 | Automotive grade, 200MHz bandwidth |
Key consideration factors: - Match output current capabilities with laser diode specifications - Verify modulation bandwidth compatibility with system requirements - Evaluate thermal protection features for reliability - Assess integration level (discrete vs. system-on-chip) - Consider package type (QFN, BGA) for PCB design
Emerging developments include: - Integration with optical feedback loops for closed-loop power control - Development of GaN-based drivers for higher switching frequencies - Implementation of digital telemetry for predictive maintenance - Miniaturization for wearable laser-based sensors - Increased focus on automotive-grade drivers for autonomous vehicles