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NXP Semiconductors ASL2416SHN/L1Y
- Part No.:
- ASL2416SHN/L1Y
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ASL2416SHN/L1Y.pdf
- Description:
- IC LED DRVR LIN PWM 1.5A 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,850
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Product details
Overview
ASL2416SHN/L1Y from NXP Semiconductors is an AEC-Q100 Grade 1 qualified two-channel buck-mode LED driver IC for automotive exterior and interior lighting. It delivers constant average DC current up to 1.5 A per channel across input voltages from 10 V to 80 V, supports up to 20 LEDs per string, and features SPI-controlled current programming with ±5 % accuracy over −40 °C to +125 °C ambient.
For engineers reviewing the ASL2416SHN/L1Y datasheet, ASL2416SHN/L1Y pinout, ASL2416SHN/L1Y application, or ASL2416SHN/L1Y equivalent, key selection criteria include dual-channel independent dimming via PWM inputs, programmable hysteresis for ripple/frequency trade-off, integrated gate driver voltage regulation (VGG), output voltage monitoring up to 70 V, and diagnostic read-back of VIN, VLED, junction temperature, and current-reach status.
Technical Context
The ASL2416SHN/L1Y implements a hysteretic buck topology with two independent control loops, each regulating inductor current via external high-side N-channel MOSFETs driven by internal gate drivers supplied from an adjustable VGG regulator. Each channel supports programmable current range (±300 mV or ±120 mV sense voltage) and hysteresis level (4 settings), enabling switching frequency tuning from 100 kHz to 2 MHz.
It integrates bootstrap diodes, monitors VIN and VLED (on/off states), reports junction temperature (−40 °C to +175 °C), and provides fail-silent operation on thermal shutdown (>175 °C) or VGG error. Diagnostics-including open/short LED detection, current-reach status, and VIN_stat-are accessible via SPI registers at dedicated addresses (e.g., 0x20h–0x23h, 0x26h, 0x37h).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 10 V to 80 V - enables direct connection to automotive battery systems including cold-crank and load-dump conditions. |
| Max Output Current per Channel | ≥1.5 A - supports high-brightness LED strings for DRL, low/high beam, and fog lights. |
| LED String Voltage Range | 2.5 V to 70 V - accommodates 1–20 LEDs in series per channel with headroom margin. |
| Current Accuracy | ±5 % over −40 °C to +125 °C - ensures consistent luminance across full automotive temperature range without recalibration. |
| Switching Frequency Range | 100 kHz to 2 MHz - configurable via SPI-programmable hysteresis to balance EMI, efficiency, and component size. |
| Junction Temp Limit | +175 °C with thermal shutdown - protects device and system under sustained overload or poor heatsinking. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C ambient) - certified for safety-critical automotive lighting applications. |
Pinout & Package
Housed in HVQFN32 (SOT617-12), 5 mm × 5 mm × 0.85 mm, with exposed thermal pad soldered to PCB ground for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (1, 32) | Chip ground reference | Primary return path for analog/digital circuits; exposed pad must be connected to PCB ground plane. |
| VIN (31) | Main power input | Accepts 10–80 V supply; feeds internal regulators and gate drivers. |
| VCC (3) | External 5 V supply | Provides regulated 5 V for SPI interface and logic; not internally generated. |
| EN (4) | Enable control | Active-high digital input; disables all channels and gate drivers when low. |
| PWM1/PWM2 (9, 10) | Channel dimming control | Direct TTL/CMOS-compatible inputs for independent on/off timing per channel. |
| SDI/SCLK/CSB/SDO (7, 6, 5, 2) | SPI interface | Full-duplex 4-wire SPI for configuration, diagnostics, and real-time monitoring. |
| RH1/RL1, RH2/RL2 (24, 23, 18, 17) | Current sense terminals | High-side and low-side sense resistor connections per channel for accurate ILED regulation. |
| G1/G2 (26, 20) | Gate driver outputs | Drive external high-side N-MOSFETs; support logic- and standard-level FETs via programmable VGG. |
| LX1/LX2 (25, 21) | Switch node | Connects to inductor and cathode of LED string; critical for EMI layout and thermal management. |
| BS1/BS2 (27, 19) | Bootstrap supply | Charge path for high-side gate drive; integrated bootstrap diodes reduce external component count. |
| VGG (29) | Gate driver supply | Internally regulated output (programmable 5.58–10.20 V); powers G1/G2 drivers and BS circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent buck channels | Enables separate control of two LED strings (e.g., left/right DRL or low/high beam) without cross-talk or shared components. |
| SPI-programmable current & hysteresis | Allows dynamic adjustment of LED current (30 mA–3 A range) and ripple/frequency trade-off during operation for fade-in/fade-out effects. |
| Integrated VGG regulator with programmable output | Eliminates need for external gate driver supply; supports both logic-level (≤5 V) and standard-level (≥10 V) MOSFETs. |
| Comprehensive diagnostics via SPI | Real-time read-back of VIN, VLED(on/off), junction temperature, current-reach status, and fault flags (Tj_err, VGG_err, SPI_err). |
| Automotive-grade protection suite | Includes input UVLO, thermal shutdown, open/short LED detection, overcurrent protection, and fail-silent mode with SPI retention. |
Applications
| Daytime Running Lights (DRL) | Low Beam Headlights |
|---|---|
Use Scenario: Continuous illumination during daylight hours for vehicle visibility. IC Role / Device Role / Timing Role: Dual-channel constant-current driver powering two independent LED strings with synchronized or phase-shifted PWM dimming. Use Value: Enables precise luminance matching between left/right DRLs using SPI-trimmed current and hysteresis, meeting ECE R87 photometric requirements. | Use Scenario: Primary forward illumination with adaptive cutoff and glare control. IC Role / Device Role / Timing Role: High-current (≥700 mA), high-voltage (≥30 V) buck controller driving multi-chip LED arrays with thermal derating feedback. Use Value: Delivers ±5 % current accuracy across −40 °C to +125 °C ambient, ensuring stable light output despite engine bay temperature swings. |
| Turn Indicators | Fog Lights |
Use Scenario: High-frequency flashing (1–2 Hz) with rapid on/off transitions. IC Role / Device Role / Timing Role: Fast-response current source activated/deactivated via PWM1/PWM2 with <200 ns channel enable/disable latency. Use Value: Eliminates need for external flasher relays; supports variable-duty-cycle signaling and LED failure detection via VLED measurement. | Use Scenario: Wide-beam, high-lumen output in low-visibility conditions. IC Role / Device Role / Timing Role: Robust 1.5 A+ per-channel driver supporting 10–20 LED strings with integrated short-circuit/open-circuit protection. Use Value: Maintains illumination during battery voltage sag (down to 10 V) and load-dump transients (up to 80 V), complying with ISO 7637-2 Pulse 5a. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar two-channel automotive LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCV78763 | Two-channel linear + buck hybrid; max 150 mA/channel linear + 1.2 A buck; no SPI hysteresis control; uses I²C. | Targeted at lower-power interior lighting; lacks programmable hysteresis and VLED monitoring. | Choose for cost-sensitive interior map lights where high-current buck capability is unnecessary. |
| Infineon TLD5098EL | Single-channel synchronous buck; 1.5 A max; SPI interface; no dual-channel integration; requires two ICs for dual-string operation. | Requires duplicated layout and BOM for two strings; lacks integrated diagnostics like VLED(on/off) and Tj read-back. | Choose when channel isolation is critical and board space allows separate controllers per string. |
Compared with NCV78763 and TLD5098EL, the ASL2416SHN/L1Y uniquely integrates dual independent buck channels with SPI-accessible VLED diagnostics, programmable hysteresis, and a single-package solution that reduces PCB area, BOM count, and inter-channel timing skew-critical for adaptive front lighting systems.
Availability
ASL2416SHN/L1Y is available at Aetrix Electronics and suitable for automotive daytime running lights, low beam headlights, turn indicators, and fog lights requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for ASL2416SHN/L1Y 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 power management and lighting ICs.
The ASL2416SHN/L1Y belongs to NXP's ASL family of high-voltage LED drivers, designed specifically for demanding automotive exterior lighting systems requiring functional safety, diagnostic coverage, and robust EMC performance.
FAQ
What is the maximum number of LEDs the ASL2416SHN/L1Y can drive per channel?
The ASL2416SHN/L1Y supports up to 20 LEDs per channel, enabled by its 70 V maximum output voltage capability and wide 2.5 V–70 V regulated LED voltage range. This allows series configurations of common white or amber automotive LEDs (typically 3–4 V each) while maintaining sufficient headroom for current regulation across temperature and input voltage variations. The actual count depends on forward voltage distribution and thermal design.
Does the ASL2416SHN/L1Y support independent current programming for each channel?
Yes, the ASL2416SHN/L1Y supports fully independent current programming for each channel via dedicated SPI registers: LED current channel 1 register (0x02h) and LED current channel 2 register (0x03h). Each register accepts 8-bit values and works with corresponding I_CH1/I_CH2 bits in the LED current range register (0x05h) to set sense voltage ranges (±300 mV or ±120 mV), enabling precise, mismatch-tolerant dual-string control.
How does the ASL2416SHN/L1Y detect LED open or short circuit conditions?
The ASL2416SHN/L1Y detects LED faults by measuring output voltage (VLED) in both on and off states via dedicated SPI-accessible registers (0x20h–0x23h). An open circuit shows near-zero VLED_on and high VLED_off; a short shows high VLED_on and near-zero VLED_off. These measurements-combined with current-reach status (I-CH1/I-CH2 bits in 0x37h)-enable reliable fault classification without external comparators.
What is the function of the VGG pin on the ASL2416SHN/L1Y?
The VGG pin on the ASL2416SHN/L1Y outputs an internally regulated gate driver supply voltage (programmable from 5.58 V to 10.20 V via register 0x01h). It powers the G1 and G2 gate drivers and BS1/BS2 bootstrap circuits, enabling compatibility with both logic-level and standard-level external N-channel MOSFETs. VGG_ok/VGG_err status bits (0x37h) provide real-time health monitoring.
Can the ASL2416SHN/L1Y operate with only one LED channel active?
Yes, the ASL2416SHN/L1Y supports single-channel operation. Either channel can be independently disabled via the PWMctrl1/PWMctrl2 bits in the function control register (0x00h), or by holding the corresponding PWM pin low. When one channel is inactive, the other operates normally with full current accuracy, diagnostics, and thermal management-no reconfiguration or hardware changes are required.
ASL2416SHN/L1Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Buck
- Internal Switch(s):
- No
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 10V
- Voltage - Supply (Max):
- 80V
- Voltage - Output:
- 2.5V ~ 70V
- Current - Output / Channel:
- 1.5A
- Frequency:
- 100kHz ~ 2MHz
- Dimming:
- PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-HVQFN (5x5)
ASL2416SHN/L1Y FAQ
1.How can I place an order for ASL2416SHN/L1Y through Aetrix?
Please submit a Request for Quotation (RFQ) for ASL2416SHN/L1Y 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 ASL2416SHN/L1Y reliable?
The price and inventory of ASL2416SHN/L1Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASL2416SHN/L1Y is usually 5 days.
3.What payment methods are accepted for ASL2416SHN/L1Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASL2416SHN/L1Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASL2416SHN/L1Y?
ASL2416SHN/L1Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASL2416SHN/L1Y 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 ASL2416SHN/L1Y?
For technical support, including ASL2416SHN/L1Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASL2416SHN/L1Y requirements.
6.How does Aetrix verify that ASL2416SHN/L1Y is sourced from the original manufacturer or authorized distributors?
All ASL2416SHN/L1Y 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 ASL2416SHN/L1Y meets industry standards.
7.What is the process for return or replacement of ASL2416SHN/L1Y?
All ASL2416SHN/L1Y units undergo pre-shipment inspection (PSI). If there is an issue with ASL2416SHN/L1Y, 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 ASL2416SHN/L1Y part is unused and in its original packaging.
Return procedure for ASL2416SHN/L1Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ASL2416SHN/L1Y 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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