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NXP Semiconductors ASL5108SHNZ
- Part No.:
- ASL5108SHNZ
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 36-VFQFN Exposed Pad
- Datasheet:
-
ASL5108SHNZ.pdf
- Description:
- IC LED DRVR CTRLR PWM 36HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,725
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Product details
Overview
ASL5108SHNZ from NXP Semiconductors is a direct-PWM matrix LED controller for automotive exterior lighting, delivering 0.8 A per channel across 12 independently controllable switches, 12-bit PWM resolution, and CAN interface control. It supports dynamic dimming sequences, LED brightness variation correction, and operates from –40 °C to +125 °C ambient.
For engineers reviewing the ASL5108SHNZ datasheet, ASL5108SHNZ pinout, ASL5108SHNZ application, or ASL5108SHNZ equivalent, this device serves as a scalable, AEC-Q100 Grade 1–qualified solution for pixelated headlamp systems requiring precise per-LED current control without on-chip curve computation.
Technical Context
The ASL5108SHNZ implements a direct-PWM architecture: the host microcontroller must supply updated 12-bit PWM duty cycle values for each of its 12 channels at system-defined intervals. Unlike Smart-PWM variants (e.g., ASL5008SHN), it does not compute dimming curves internally but enables glitch-free operation via built-in phase shifting and incremental PWM update logic.
It integrates 12 high-side switches with 200 mΩ RDS(on), supports up to 57 V string voltage, and features full diagnostic coverage-including per-channel open/short detection, NTC-based temperature monitoring (6-bit), identification resistor input, and charge pump fault sensing-all reported via CAN interface with broadcast message support for low-latency network coordination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 12 independent high-side switches, grouped in 4 configurable blocks of 3 |
| Max Switch Current | 0.8 A per channel - supports common automotive LED segments up to 57 V string voltage |
| PWM Resolution | 12-bit - enables smooth, flicker-free dimming with >4096 discrete intensity levels |
| Interface | CAN 2.0B - allows daisy-chaining up to 32 ASL5108SHNZ devices on one bus for 384 LED control points |
| Operating Temp | –40 °C to +125 °C ambient - qualified per AEC-Q100 Grade 1 for under-hood placement |
| RDS(on) | 200 mΩ (typ.) - minimizes conduction loss and thermal dissipation at 0.8 A continuous load |
| Supply Voltage | 5 V ± 0.5 V - tightly regulated VCC input ensures stable internal logic and gate drive |
Pinout & Package
ASL5108SHNZ is housed in a thermally enhanced, automotive-qualified 36-pin HVQFN package (SOT1092-4) with exposed thermal pad. Pin layout is optimized for single-layer IMS PCB routing near LEDs, eliminating track crossovers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 5 V ± 0.5 V main supply for logic and gate drivers; requires local decoupling |
| GND | Ground reference | Common return for power, logic, and analog circuits; tied to thermal pad |
| SWx (x=1–12) | High-side switch output | Drives LED anode; supports up to 57 V string voltage and 0.8 A continuous current |
| NTC_IN | Analog temperature sensor input | 6-bit resolution NTC monitoring for LED junction temperature compensation |
| ID_RES | PCB characterization input | Direct connection to identification resistor for board-level calibration and variant detection |
| CAN_H / CAN_L | CAN physical layer interface | Differential pair for high-speed serial communication; supports external CAN transceiver |
| EN | Enable input | Active-high digital enable; controls sleep/wake-up mode and Limp Home Mode activation |
Key Features
| Feature | Design Value |
|---|---|
| Direct PWM control mode | Host MCU supplies real-time 12-bit PWM values per channel - eliminates need for on-chip polynomial calculation while retaining full dimming flexibility |
| Per-channel open/short fault detection | Hardware-level monitoring with bypass capability on open-circuit condition - maintains partial illumination during single-LED failure |
| LED brightness variation correction | Compensates luminance mismatch across LEDs driven at identical current - ensures uniform light output in pixelated arrays |
| Internal 200 MHz oscillator | Replaces external quartz crystal - reduces BOM cost, improves EMC performance, and enables <0.25% clock accuracy via CAN-trimmed trimming |
| Limp Home Mode (LHM) | Internally programmed fallback behavior upon CAN communication loss - sustains basic lighting function without MCU intervention |
Applications
| Matrix High Beam (ADB) | Dynamic Rear Lighting |
|---|---|
Use Scenario: Adaptive driving beam system that selectively blanks individual LED pixels to avoid glare for oncoming traffic while maintaining full illumination elsewhere. IC Role / Device Role / Timing Role: ASL5108SHNZ acts as the per-pixel current driver and fault-monitoring node, receiving real-time dimming commands via CAN from the central lighting ECU. Use Value: Enables precise, independent control of 12 LED segments per IC with hardware-level open/short protection - critical for functional safety compliance in SAE J3016 Level 2+ systems. |
Use Scenario: Brake, turn, and signature lighting with animated transitions (e.g., sequential turn indicators, sweeping brake lights). IC Role / Device Role / Timing Role: ASL5108SHNZ drives multiple rear LED strings in synchronized PWM sequences, coordinated via broadcast CAN messages across a multi-IC network. Use Value: 12-bit resolution and phase-shifted PWM minimize visual artifacts during animation, while diagnostic reporting ensures fail-safe degradation per UNECE R149 requirements. |
| Dynamic Cornering Lights | Vehicle Welcoming Scenarios |
Use Scenario: Low-beam extension using auxiliary LED arrays activated during steering input to illuminate road curvature. IC Role / Device Role / Timing Role: ASL5108SHNZ provides high-current (0.8 A), thermally robust switching for cornering LEDs mounted near wheel wells, with NTC feedback for thermal derating. Use Value: Integrated 6-bit NTC input and –40 °C to +125 °C operation ensure reliable activation even in extreme ambient conditions - meeting OEM cold-soak and hot-soak validation requirements. |
Use Scenario: Illuminated entry sequences triggered by key fob or door handle, featuring progressive LED activation patterns. IC Role / Device Role / Timing Role: ASL5108SHNZ executes preloaded dimming profiles via CAN-triggered command sets, enabling smooth ramp-up/ramp-down without MCU polling overhead. Use Value: Reduces host MCU bandwidth demand by offloading timing-critical PWM sequencing - allowing resource-constrained body controllers to manage multiple welcome functions concurrently. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar matrix LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ASL5008SHN | Smart-PWM mode with on-chip polynomial curve generation; same 0.8 A rating and HVQFN36 package | Reduces MCU data traffic by storing up to eight dimming curves internally; suited for static or infrequently updated lighting profiles | Select ASL5008SHN when minimizing CAN bus load and offloading dimming computation from MCU is prioritized over real-time PWM update flexibility |
| ASL5115SHN | Direct-PWM mode with 1.5 A per channel and identical 36-pin HVQFN package; otherwise functionally identical interface and diagnostics | Supports higher-power LED segments (e.g., long-range ADB pixels); requires updated thermal design due to higher RDS(on) and power dissipation | Select ASL5115SHN when driving higher-current LEDs (>0.8 A) while retaining same PCB footprint and software stack |
Compared with ASL5008SHN, ASL5108SHNZ trades internal curve computation for full host-controlled PWM agility; compared with ASL5115SHN, it delivers identical control architecture at lower current and thermal load - making it optimal for cost- and space-constrained mid-tier adaptive lighting modules.
Availability
ASL5108SHNZ is available at Aetrix Electronics and suitable for automotive exterior lighting, adaptive driving beam (ADB), and dynamic rear lighting applications requiring stable component supply, AEC-Q100 compliance, and CAN-based distributed LED control.
Supply support for ASL5108SHNZ 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
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in automotive-grade mixed-signal ICs.
The ASL5108SHNZ belongs to NXP's Matrix LED Controller (MLC) product line, designed specifically for scalable, safety-compliant pixelated lighting systems in modern vehicles - emphasizing diagnostic integrity, thermal resilience, and CAN network interoperability.
FAQ
What is the primary operating mode of the ASL5108SHNZ?
The ASL5108SHNZ operates exclusively in Direct PWM mode: the host microcontroller must supply updated 12-bit PWM duty cycle values for each of its 12 channels at defined intervals. Unlike Smart-PWM variants such as ASL5008SHN, it does not compute dimming curves internally. This architecture gives full real-time control over LED intensity while relying on the MCU for timing and profile management. The ASL5108SHNZ uses hardware phase shifting to prevent current surges during updates, ensuring glitch-free output.
Does the ASL5108SHNZ support CAN-FD communication?
No, the ASL5108SHNZ supports only classical CAN 2.0B (up to 1 Mbps), as confirmed by its orderable part suffix "SHN" (indicating CAN interface) and absence of CAN-FD designation in Table 1 of the product brief. For CAN-FD compatibility, the functionally equivalent ASL5108FHN variant must be used. Both share identical PWM control architecture and electrical specifications, differing only in physical layer protocol support and associated CAN transceiver requirements.
How does the ASL5108SHNZ handle LED open-circuit faults?
The ASL5108SHNZ performs per-channel open-circuit detection during active drive cycles and reports the fault status via CAN. When an open circuit is detected on a switch output, the device can optionally bypass that channel using internal circuitry - allowing remaining LEDs in the same block to remain illuminated. This behavior is configurable via CAN register settings and supports fail-operational lighting strategies required by ISO 26262 ASIL-B systems. The ASL5108SHNZ also provides dedicated OC flag clearing without requiring power-on-reset.
What thermal management features does the ASL5108SHNZ include?
The ASL5108SHNZ integrates junction temperature monitoring with 9-bit resolution feedback reported over CAN, plus direct NTC input (6-bit resolution) for LED board temperature sensing. Its HVQFN36 package features an exposed thermal pad for efficient heat transfer to the PCB, and the device is rated for continuous operation from –40 °C to +125 °C ambient. Internal thermal shutdown activates above 175 °C junction temperature. These features collectively enable robust thermal derating and closed-loop thermal management in compact, high-density automotive lighting modules.
Is the ASL5108SHNZ pin-compatible with other members of the ASL5xxx family?
Yes, all ASL5xxx variants - including ASL5108SHNZ, ASL5008SHN, ASL5115SHN, and ASL5015SHN - are fully pin-to-pin compatible within the same package type (HVQFN36 or HLQFP48). This allows seamless migration between 0.8 A and 1.5 A versions or between Smart- and Direct-PWM modes without PCB redesign. The ASL5108SHNZ shares identical pinout, power sequencing, and interface signaling with ASL5008SHN, differing only in internal firmware configuration and default operational mode.
ASL5108SHNZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 36-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Switched Capacitor (Charge Pump)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 12
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 800mA
- Frequency:
- 200MHz
- Dimming:
- PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 36-HVQFN (6x6)
ASL5108SHNZ FAQ
1.How can I place an order for ASL5108SHNZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ASL5108SHNZ 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 ASL5108SHNZ reliable?
The price and inventory of ASL5108SHNZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASL5108SHNZ is usually 5 days.
3.What payment methods are accepted for ASL5108SHNZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASL5108SHNZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASL5108SHNZ?
ASL5108SHNZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASL5108SHNZ 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 ASL5108SHNZ?
For technical support, including ASL5108SHNZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASL5108SHNZ requirements.
6.How does Aetrix verify that ASL5108SHNZ is sourced from the original manufacturer or authorized distributors?
All ASL5108SHNZ 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 ASL5108SHNZ meets industry standards.
7.What is the process for return or replacement of ASL5108SHNZ?
All ASL5108SHNZ units undergo pre-shipment inspection (PSI). If there is an issue with ASL5108SHNZ, 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 ASL5108SHNZ part is unused and in its original packaging.
Return procedure for ASL5108SHNZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ASL5108SHNZ Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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