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NXP Semiconductors ASL5115FHNZ
- Part No.:
- ASL5115FHNZ
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 36-VFQFN Exposed Pad
- Datasheet:
-
ASL5115FHNZ.pdf
- Description:
- IC LED DRV CTRL PWM 1.5A 36HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,465
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Product details
Overview
ASL5115FHNZ from NXP Semiconductors is a direct-PWM matrix LED controller for automotive exterior lighting, delivering 1.5 A per channel, 12-bit PWM dimming resolution, and CAN-FD interface support. It drives up to 12 LEDs/segments with string voltage up to 57 V and operates across –40 °C to +125 °C ambient, targeting adaptive driving beam (ADB) and dynamic rear lighting systems.
For engineers reviewing the ASL5115FHNZ datasheet, ASL5115FHNZ pinout, ASL5115FHNZ application, or ASL5115FHNZ equivalent, this device requires attention to its HVQFN36 package thermal design, CAN-FD timing constraints, direct-PWM update cycle requirements, and diagnostic flag handling via CAN interface.
Technical Context
The ASL5115FHNZ implements a 12-channel LED driver architecture organized in four configurable blocks of three switches each, where each block floats up to 60 V relative to ground and supports paralleling. It uses internal 200 MHz oscillator-derived clocks trimmed via CAN-ID messages for <0.25% accuracy, eliminating external quartz.
It operates in direct PWM mode only - requiring continuous microcontroller updates per channel - and includes on-chip LED open/short detection, NTC-based temperature monitoring (6-bit), identification resistor input, and charge pump failure safe operation (CPFSO). All diagnostics are reported via CAN interface with dedicated flags and dynamic reset capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LED Drive Channels | 12 independent channels, grouped in 4 blocks of 3 switches each for flexible layout and floating voltage management |
| Max Current per Switch | 1.5 A - enables high-brightness LED segments without external current boosters |
| PWM Resolution | 12-bit - ensures smooth, glitch-free dimming transitions critical for ADB glare-free performance |
| Interface Protocol | CAN-FD - supports higher data rates and larger payloads vs. classical CAN for real-time multi-IC coordination |
| Operating Voltage | 5 V ± 0.5 V (Vcc) - matches standard automotive MCU supply rails with integrated under-voltage protection |
| Ambient Temp Range | –40 °C to +125 °C - meets AEC-Q100 Grade 1 requirements for under-hood and headlamp placement |
| Junction Temp Limit | 175 °C - allows sustained operation under thermal stress with built-in junction temperature feedback (9-bit via CAN) |
Pinout & Package
The ASL5115FHNZ is housed in a thermally enhanced, automotive-qualified 36-pin HVQFN package (SOT1092-4), optimized for single-layer IMS PCB routing with no track crossings. Pin assignment supports proximity mounting near LEDs while maintaining signal integrity and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply Input | 5 V ± 0.5 V main power rail; includes internal UVLO protection |
| GND | Ground Reference | Dedicated analog/digital ground pins for noise isolation and thermal path |
| CANH / CANL | CAN-FD Differential Interface | High-speed bidirectional communication with up to 32 MLCs on one bus |
| NTC_IN | Analog Temperature Sense Input | 6-bit resolution NTC monitoring for LED temperature compensation |
| ID_RES | PCB Characterization Input | Direct connection to identification resistor for board-level calibration |
| OUT0–OUT11 | LED Driver Outputs | 12 high-side switch outputs with 100 mΩ Rdson and integrated open/short fault detection |
| CHG_PUMP | Charge Pump Capacitor Terminal | External capacitor connection for gate drive voltage generation; monitored for failure (CPFSO) |
Key Features
| Feature | Design Value |
|---|---|
| Direct PWM Mode Operation | Eliminates need for internal polynomial calculation logic - microcontroller retains full real-time control over all 12 channels' duty cycles |
| On-Chip Diagnostic Reporting | Real-time CAN-accessible flags for open/short circuits, NTC/ID resistor faults, charge pump failure, and POK status - enabling rapid system-level fault recovery |
| Limp Home Mode (LHM) | Internally programmed fallback behavior upon CAN communication loss - maintains basic lighting functionality without MCU intervention |
| Thermal & Electrical Robustness | 175 °C max junction temperature rating, AEC-Q100 Grade 1 qualification, and 60 V floating block capability ensure reliability in harsh automotive environments |
| Low Standby Current | <1.35 mA standby consumption - supports always-on vehicle architectures with minimal battery drain |
Applications
| Matrix High Beam (ADB) | Dynamic Rear Lighting |
|---|---|
Use Scenario: Adaptive driving beam system dynamically blanks individual LED segments to avoid glare while illuminating surrounding road areas. IC Role / Device Role / Timing Role: ASL5115FHNZ acts as the final-stage LED switch controller, executing real-time PWM commands from central ADAS ECU via CAN-FD. Use Value: 12-bit dimming resolution and 1.5 A per channel enable precise luminance control across 12 independently addressable zones, meeting UNECE R149 glare-free requirements. |
Use Scenario: Rear light clusters implement sequential turn signals, brake intensity modulation, and welcome animations using programmable LED patterns. IC Role / Device Role / Timing Role: ASL5115FHNZ serves as the segment driver IC, receiving time-synchronized PWM updates over CAN-FD to coordinate multi-light animations. Use Value: Direct PWM mode allows synchronized frame-by-frame updates across multiple ASL5115FHNZ devices, ensuring sub-millisecond inter-device timing alignment. |
| Dynamic Cornering Lights | Welcoming Scenarios |
Use Scenario: Front lighting system activates additional LED segments during steering to illuminate upcoming road curvature. IC Role / Device Role / Timing Role: ASL5115FHNZ receives steering angle and speed data via CAN-FD and drives auxiliary cornering LEDs with variable intensity profiles. Use Value: Floating 60 V block architecture permits direct integration with high-side switched 12 V/24 V vehicle power domains without level-shifting circuitry. |
Use Scenario: Vehicle performs animated light sequences (e.g., sweeping front lights) when unlocking doors or approaching owner. IC Role / Device Role / Timing Role: ASL5115FHNZ executes preloaded animation sequences triggered by body control module (BCM) commands over CAN-FD. Use Value: On-chip LHM and diagnostic reporting allow graceful degradation - e.g., defaulting to static welcome pattern if CAN communication is interrupted mid-sequence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar matrix LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ASL5115SHN | Same 1.5 A capability and HVQFN36 package, but uses classical CAN (not CAN-FD); lacks higher bandwidth and payload capacity | Suitable for legacy vehicle platforms without CAN-FD infrastructure; lower update rate limits complex animation fidelity | Select ASL5115SHN only when CAN-FD PHY is unavailable or system bandwidth demand is below 2 Mbps |
| ASL5115FHV | Identical electrical specs and CAN-FD interface, but in 48-pin HLQFP package (SOT1571-1) with larger thermal pad and leaded pins | Better suited for manual assembly, rework, or applications requiring higher thermal margin and mechanical robustness | Choose ASL5115FHV when board-level reliability testing mandates leaded packages or thermal dissipation exceeds HVQFN limits |
Compared with ASL5115SHN and ASL5115FHV, the ASL5115FHNZ provides optimal balance of CAN-FD performance, compact HVQFN footprint, and automotive-grade thermal capability - making it the preferred choice for new ADB and dynamic lighting designs targeting space-constrained headlamp modules.
Availability
ASL5115FHNZ is available at Aetrix Electronics and suitable for automotive exterior lighting, adaptive driving beam (ADB), and dynamic rear lighting applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for ASL5115FHNZ 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 electronics and functional safety.
The ASL5xxxyHz product line was designed specifically for scalable, high-reliability matrix LED control in automotive lighting - emphasizing diagnostic completeness, thermal resilience, and CAN-based system integration.
FAQ
What is the primary function of the ASL5115FHNZ in an automotive lighting system?
The ASL5115FHNZ functions as a 12-channel matrix LED driver IC that executes real-time PWM commands received over CAN-FD to control individual LED segments in adaptive driving beam (ADB) and dynamic rear lighting systems. It integrates high-side switches with 1.5 A capability, on-chip diagnostics, and thermal monitoring - enabling precise, reliable, and safety-compliant LED control without external current amplification or timing circuitry. The ASL5115FHNZ is engineered for direct PWM mode operation, placing full dimming control in the host ECU.
Does the ASL5115FHNZ support both Smart PWM and Direct PWM modes?
No - the ASL5115FHNZ supports Direct PWM mode only, meaning the microcontroller must supply updated PWM duty cycle values for each of its 12 channels on every update cycle. Smart PWM functionality - which uses internally stored polynomial curves to calculate duty cycles - is implemented exclusively in ASL50xxxFHN/SHN variants (e.g., ASL5015FHN). This distinction is fixed by silicon configuration and cannot be altered via firmware or configuration registers.
What package type and thermal characteristics does the ASL5115FHNZ use?
The ASL5115FHNZ uses the 36-pin HVQFN package (SOT1092-4), a thermally enhanced, leadless automotive-qualified outline with exposed thermal pad. It supports operation from –40 °C to +125 °C ambient and has a maximum junction temperature of 175 °C. Its pin layout is optimized for single-layer IMS PCB routing, minimizing track crossings and improving thermal conduction to the heatsink layer - critical for headlamp module integration where space and heat dissipation are constrained.
How does the ASL5115FHNZ handle fault conditions such as LED open or short circuits?
The ASL5115FHNZ provides per-channel LED open-circuit and short-circuit detection with dedicated status flags accessible via CAN-FD interface. Upon detection, it automatically disables the affected output and asserts corresponding fault bits. Crucially, it allows dynamic clearing of OC/SC flags and internal MOSFET reset without requiring a power-on-reset - enabling rapid recovery during runtime. The ASL5115FHNZ also supports bypass operation during open-circuit events to maintain partial illumination in safety-critical lighting zones.
Is an external crystal required for ASL5115FHNZ clock generation?
No - the ASL5115FHNZ incorporates an internal 200 MHz oscillator that eliminates the need for an external quartz crystal. All internal clocks are derived and synchronized from this oscillator, with trimming performed via CAN-ID messages to achieve <0.25% accuracy. This reduces bill-of-materials cost, improves EMC behavior, and simplifies PCB layout - especially important in space-constrained automotive lighting modules where crystal placement and routing introduce noise and layout complexity.
ASL5115FHNZ 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:
- 1.5A
- 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)
ASL5115FHNZ FAQ
1.How can I place an order for ASL5115FHNZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ASL5115FHNZ 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 ASL5115FHNZ reliable?
The price and inventory of ASL5115FHNZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASL5115FHNZ is usually 5 days.
3.What payment methods are accepted for ASL5115FHNZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASL5115FHNZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASL5115FHNZ?
ASL5115FHNZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASL5115FHNZ 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 ASL5115FHNZ?
For technical support, including ASL5115FHNZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASL5115FHNZ requirements.
6.How does Aetrix verify that ASL5115FHNZ is sourced from the original manufacturer or authorized distributors?
All ASL5115FHNZ 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 ASL5115FHNZ meets industry standards.
7.What is the process for return or replacement of ASL5115FHNZ?
All ASL5115FHNZ units undergo pre-shipment inspection (PSI). If there is an issue with ASL5115FHNZ, 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 ASL5115FHNZ part is unused and in its original packaging.
Return procedure for ASL5115FHNZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ASL5115FHNZ Tags
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BCR402RE6327HTSA1
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR420UFD-7
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BCR421UFD-7
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