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NXP Semiconductors ASL5108FHNZ
- Part No.:
- ASL5108FHNZ
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 36-VFQFN Exposed Pad
- Datasheet:
-
ASL5108FHNZ.pdf
- Description:
- IC LED DRVR CTRLR PWM 36HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,591
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Product details
Overview
ASL5108FHNZ from NXP Semiconductors is a CAN-FD–enabled Matrix LED Controller (MLC) designed for automotive exterior lighting systems requiring precise, scalable, and fault-resilient LED segment control. It delivers 12-channel switching with 0.8 A per switch, 12-bit direct PWM dimming, and integrated diagnostics including LED open/short detection, NTC-based temperature monitoring, and IC junction temperature feedback via CAN.
For engineers reviewing the ASL5108FHNZ datasheet, ASL5108FHNZ pinout, ASL5108FHNZ application, or ASL5108FHNZ equivalent, this device supports dynamic matrix beam shaping in ADB/GFHB systems, reduces microcontroller data traffic through direct channel-level PWM updates, and enables robust thermal and electrical fault management in high-reliability automotive lighting designs.
Technical Context
The ASL5108FHNZ operates in Direct PWM mode-requiring the host MCU to supply updated 12-bit PWM values per channel at system-defined intervals-enabling glitch-free dimming without internal polynomial curve calculation. Its 12 output channels are grouped into four configurable 3-switch blocks, each capable of floating up to 60 V relative to ground and paralleling with other blocks for flexible string architecture.
It integrates a 200 MHz internal oscillator (trimmable via CAN-ID), eliminating external quartz and improving EMC performance. Communication occurs over CAN-FD (up to 5 Mbit/s), supporting broadcast messages to synchronize up to 32 MLCs on one bus for coordinated control of up to 384 LED segments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LED drive current | 0.8 A per switch - supports high-brightness LED strings without external current boosters |
| PWM resolution | 12-bit - enables smooth, imperceptible dimming transitions across full brightness range |
| Channel count | 12 independent outputs - arranged in 4 × 3-switch blocks for modular layout and voltage isolation |
| Interface | CAN-FD (5 Mbit/s) - provides deterministic low-latency communication and broadcast capability for multi-IC coordination |
| Operating temp. | −40 °C to +125 °C ambient - qualified for under-hood and headlamp module environments |
| Junction temp. max. | 175 °C - allows sustained operation under thermal stress with appropriate PCB heatsinking |
| Supply voltage | 5 V ± 0.5 V - compatible with standard automotive 5 V LDO rails; includes under-voltage lockout |
| Diagnostic coverage | NTC input (6-bit), ID resistor input, open/short detection per LED, charge pump & POK monitoring - enables ASIL-B–aligned functional safety compliance |
Pinout & Package
The ASL5108FHNZ is housed in a thermally enhanced, automotive-qualified 36-pin HVQFN package (SOT1092-4) with exposed thermal pad, optimized for IMS PCB mounting and single-layer routing. Pin assignment follows NXP's standardized MLC layout for mechanical and thermal consistency across the ASL5xxx family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 5 V ± 0.5 V main supply rail; powers internal logic, drivers, and CAN transceiver |
| GND | Ground reference | Dedicated power and analog ground pins ensure noise immunity for PWM and CAN signaling |
| LEDx_OUT (x=1–12) | High-side switch output | Drives LED anodes; each supports 0.8 A continuous, 200 mΩ Rdson, and open/short detection |
| NTC_IN | Analog temperature sensor input | 6-bit resolution ADC input for direct NTC thermistor connection to monitor LED board temperature |
| ID_RES | PCB identification input | Analog input for resistor-based board characterization; enables firmware auto-configuration |
| CAN_H / CAN_L | CAN-FD differential interface | Supports 5 Mbit/s operation; internal termination and fail-safe biasing reduce external component count |
| POK | Power OK status output | Open-drain flag confirming stable internal regulation and functional readiness of all subsystems |
| SLEEP | Low-power mode control | Active-low input enabling standby mode with <1.35 mA consumption; wake-up via CAN or external interrupt |
Key Features
| Feature | Design Value |
|---|---|
| Direct PWM mode | Enables full 12-bit channel-by-channel dimming control without internal curve storage-ideal for real-time adaptive lighting algorithms |
| Multi-block floating architecture | Four independent 3-switch blocks, each floating up to 60 V, allow mixed-string topologies and simplified high-voltage LED array design |
| Integrated diagnostics | Per-channel open/short detection, NTC temperature monitoring, IC junction sensing (9-bit), and charge pump failure mode (CPFSO) support ISO 26262 ASIL-B decomposition |
| Limp Home Mode (LHM) | Internally programmed fallback behavior on CAN communication loss-maintains safe illumination level without MCU intervention |
| Thermal & EMC optimized | 200 MHz internal oscillator eliminates quartz crystal; HVQFN package with thermal pad enables efficient heat dissipation on IMS substrates |
| Scalable CAN-FD network | Supports daisy-chained or star-topology networks of up to 32 ASL5108FHNZ devices-enabling centralized control of 384 LED segments |
Applications
| Matrix High Beam (ADB/GFHB) | Dynamic Rear Lighting |
|---|---|
|
Use Scenario: Adaptive driving beam system that selectively blanks LED segments to avoid glare while maintaining maximum forward illumination. IC Role / Device Role / Timing Role: ASL5108FHNZ acts as the final-stage LED segment driver, receiving real-time dimming commands via CAN-FD and executing precise 12-bit PWM per channel with sub-millisecond latency. Use Value: Enables pixel-level beam shaping with <1.35 mA standby current and built-in LHM-ensuring fail-operational behavior during communication faults. |
Use Scenario: Rear light cluster implementing sequential turn indicators, brake light intensity modulation, and signature welcome animations. IC Role / Device Role / Timing Role: ASL5108FHNZ controls up to 12 individually addressable LED segments per unit, synchronized across multiple ICs using CAN-FD broadcast messages. Use Value: Reduces MCU bandwidth demand by offloading timing-critical PWM generation while providing per-segment open/short fault reporting for regulatory compliance. |
| Dynamic Cornering Lights | Automotive Welcoming Scenarios |
|
Use Scenario: Front lighting system that activates additional LED segments during steering maneuvers to illuminate road curvature. IC Role / Device Role / Timing Role: ASL5108FHNZ receives vehicle speed and steering angle data via CAN-FD and drives auxiliary LED arrays with phase-shifted PWM to minimize EMI. Use Value: Achieves <0.25 % clock accuracy via internal oscillator trimming-ensuring consistent dimming timing across all units without external crystal dependencies. |
Use Scenario: Illuminated entry sequence triggered by key fob or door handle, featuring animated light patterns across front/rear modules. IC Role / Device Role / Timing Role: ASL5108FHNZ executes preloaded animation sequences stored in host MCU memory, updating each of its 12 channels with synchronized 12-bit PWM values. Use Value: Supports sleep/wake via CAN message-allowing ultra-low-power (<1.35 mA) standby until activation, critical for battery-sensitive welcome functions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar matrix LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ASL5108SHN | CAN (not CAN-FD); identical pinout, 0.8 A per switch, same HVQFN36 package | Limited to 1 Mbit/s CAN; unsuitable for high-bandwidth ADB systems requiring fast frame updates | Select ASL5108SHN only if legacy CAN infrastructure is fixed and bandwidth requirements remain ≤1 Mbit/s |
| ASL5115FHN | 1.5 A per switch; 100 mΩ Rdson; otherwise identical CAN-FD interface and feature set | Supports higher-current LED strings (e.g., high-lumen daytime running lights) without external boost stages | Choose ASL5115FHN when driving >0.8 A per channel is required; retains full software and layout compatibility |
Compared with ASL5108SHN, the ASL5108FHNZ offers 5× higher CAN bandwidth for real-time ADB updates; compared with ASL5115FHN, it trades current capability for lower conduction loss in thermally constrained modules-both maintain identical footprint and diagnostic functionality.
Availability
ASL5108FHNZ is available at Aetrix Electronics and suitable for automotive exterior lighting, adaptive beam control, and dynamic rear lighting applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 Grade 1 compliance.
Supply support for ASL5108FHNZ 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 analog and mixed-signal ICs.
The ASL5108FHNZ belongs to NXP's Matrix LED Controller (MLC) product line-designed specifically for scalable, safety-aware, and thermally robust LED segment control in next-generation automotive lighting systems.
FAQ
What interface protocol does the ASL5108FHNZ use, and what is its maximum data rate?
The ASL5108FHNZ uses a CAN-FD interface compliant with ISO 11898-1, supporting data rates up to 5 Mbit/s in the flexible data phase. This enables rapid synchronization of PWM updates across multiple ASL5108FHNZ devices in ADB systems. The interface includes built-in error detection, broadcast messaging, and POK signaling-ensuring deterministic timing and robust communication in electrically noisy automotive environments.
Does the ASL5108FHNZ support thermal monitoring of connected LEDs?
Yes, the ASL5108FHNZ features a dedicated NTC_IN pin with 6-bit resolution ADC for direct connection to an NTC thermistor placed near the LED array. This allows real-time LED board temperature monitoring, enabling dynamic current derating or thermal foldback. Temperature data is reported via CAN-FD, and the IC also provides 9-bit junction temperature feedback for system-level thermal management of the ASL5108FHNZ itself.
How many LED channels can one ASL5108FHNZ control, and how are they organized?
The ASL5108FHNZ controls 12 independent LED channels, grouped into four configurable blocks of three switches each. Each block floats up to 60 V relative to ground and can be paralleled with other blocks-supporting flexible string architectures such as multi-string matrix arrays or cascaded high-voltage configurations. All 12 outputs are high-side switches rated for 0.8 A continuous current and 200 mΩ Rdson.
What safety and diagnostic features does the ASL5108FHNZ provide for automotive compliance?
The ASL5108FHNZ includes comprehensive diagnostics required for ASIL-B decomposition: per-channel LED open/short detection with bypass capability, internal charge pump failure mode (CPFSO), Power OK (POK) flag, POR monitoring, external component (NTC, ID resistor, capacitor) validation, and full CAN communication error flagging. It is AEC-Q100 Grade 1 qualified (−40 °C to +125 °C) and supports Limp Home Mode (LHM) for fail-operational behavior during CAN loss-critical for automotive lighting safety integrity.
Is the ASL5108FHNZ pin-compatible with other members of the ASL5xxx family?
Yes, the ASL5108FHNZ is fully pin-to-pin compatible with all ASL5xxx variants in the same HVQFN36 package-including ASL5108SHN (CAN), ASL5115FHN (1.5 A, CAN-FD), and ASL5008FHN (Smart PWM, CAN-FD). This enables hardware reuse across performance tiers (current rating, interface type, PWM mode) and simplifies platform scalability without PCB redesign.
ASL5108FHNZ 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)
ASL5108FHNZ FAQ
1.How can I place an order for ASL5108FHNZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ASL5108FHNZ 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 ASL5108FHNZ reliable?
The price and inventory of ASL5108FHNZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASL5108FHNZ is usually 5 days.
3.What payment methods are accepted for ASL5108FHNZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASL5108FHNZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASL5108FHNZ?
ASL5108FHNZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASL5108FHNZ 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 ASL5108FHNZ?
For technical support, including ASL5108FHNZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASL5108FHNZ requirements.
6.How does Aetrix verify that ASL5108FHNZ is sourced from the original manufacturer or authorized distributors?
All ASL5108FHNZ 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 ASL5108FHNZ meets industry standards.
7.What is the process for return or replacement of ASL5108FHNZ?
All ASL5108FHNZ units undergo pre-shipment inspection (PSI). If there is an issue with ASL5108FHNZ, 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 ASL5108FHNZ part is unused and in its original packaging.
Return procedure for ASL5108FHNZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ASL5108FHNZ Tags
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