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NXP Semiconductors ASL2416SHNY
- Part No.:
- ASL2416SHNY
- Manufacturer:
- NXP Semiconductors
- Category:
- LED Drivers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ASL2416SHNY.pdf
- Description:
- IC LED DRVR LIN PWM 1.5A 32HVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,128
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Product details
Overview
ASL2416SHNY 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 with ±5 % accuracy across −40 °C to +125 °C, supports input voltages from 10 V to 80 V, regulates output voltage up to 70 V, and drives up to 20 LEDs per string in high-side N-MOSFET configurations.
For engineers reviewing the ASL2416SHNY datasheet, ASL2416SHNY pinout, ASL2416SHNY application, or ASL2416SHNY equivalent, key selection considerations include its SPI-programmable current and hysteresis, dual independent PWM dimming inputs, integrated gate driver supply (VGG), LED open/short diagnostics via output voltage measurement, and thermal shutdown at +175 °C junction temperature.
Technical Context
The ASL2416SHNY implements a hysteretic buck topology with independently controlled channels, each regulating inductor current via external high-side N-MOSFETs. Its programmable hysteresis (via SPI register 0x0B/0x0C) sets switching frequency between 100 kHz and 2 MHz while balancing ripple and efficiency.
It integrates a linear regulator for adjustable gate drive voltage (VGG, 5.58 V–10.20 V via register 0x01h), bootstrap diodes, and real-time diagnostics including VIN monitoring, junction temperature readback (register 0x26h), and per-channel current-reach status (bits I-CH1/I-CH2 in register 0x37h).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Hysteretic buck converter with independent dual channels for high-side N-MOSFET drive |
| Input Voltage Range | 10 V to 80 V - enables direct battery connection in 12 V/24 V/48 V automotive systems |
| Output Current Accuracy | ±5 % over −40 °C to +125 °C - ensures consistent LED brightness under full automotive ambient range |
| Max Output Voltage | 70 V - supports strings of up to 20 white LEDs (3.5 V typical VF) |
| Current Programmability | SPI-controlled target current (registers 0x02h/0x03h) with two ranges: ~120 mV or ~300 mV sense voltage full-scale |
| Thermal Protection | Junction shutdown at +175 °C - prevents damage during overload or poor heatsinking |
| Diagnostic Interface | SPI-accessible registers for VIN status, VGG OK/error, Tj, LED on/off voltage (0x20h–0x23h), and per-channel current reach |
Pinout & Package
Housed in HVQFN32 (SOT617-12), 5 mm × 5 mm × 0.85 mm, with exposed thermal pad soldered to PCB ground for enhanced 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 unregulated automotive supply; feeds internal regulators and gate drivers | VCC (3) | External 5 V supply | Provides regulated 5 V for SPI interface and logic; separate from internal VDDA/VDDD domains |
| EN (4) | Enable control | Active-high digital input; device enters Off mode when low or VIN < UV threshold |
| CSB/SCLK/SDI/SDO (5–7, 2) | SPI interface | 4-wire SPI (chip select, clock, data in/out) for configuration, diagnostics, and real-time monitoring |
| PWM1/PWM2 (9–10) | Channel dimming control | Dedicated TTL-compatible inputs for independent PWM dimming; high = channel enabled |
| G1/G2 (26, 20) | Gate drivers | High-current outputs driving external high-side N-MOSFET gates; internally regulated VGG supply |
| LX1/LX2 (25, 21) | Switch node connections | Connect to inductor high side; used for bootstrap capacitor charging and current sensing reference |
| BS1/BS2 (27, 19) | Bootstrap supplies | Connect to bootstrap capacitors; internal diodes enable self-charging during LX low phase |
| RH1/RH2 (24, 18) | High-side current sense inputs | Connect to high-side of sense resistors; used with RL1/RL2 to measure channel current |
| RL1/RL2 (23, 17) | Low-side current sense returns | Return path for sense resistor; completes current measurement loop with RH1/RH2 |
| VGG (29) | Gate driver supply output | Adjustable regulated output (5.58–10.20 V); powers G1/G2 drivers and must be monitored for overload |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C ambient operation - meets automotive reliability and stress test requirements |
| SPI-programmable hysteresis | Four discrete settings (00–11) per channel via registers 0x0B/0x0C - enables trade-off between switching loss and current ripple |
| Dual independent PWM inputs | PWM1/PWM2 pins support asynchronous dimming, phase shifting, and channel enable/disable without SPI interaction |
| Integrated bootstrap diodes | Eliminates need for external bootstrap diodes - reduces BOM count and layout complexity in high-density designs |
| LED open/short circuit detection | Voltage measurement registers (0x20h–0x23h) report LED on/off state voltage - enables fault classification without additional ADC |
| Low quiescent current | < 5 µA at 25 °C with EN = 0 - minimizes battery drain in always-on vehicle modules |
Applications
| Daytime Running Lights (DRL) | Adaptive Front Lighting Systems (AFS) |
|---|---|
Use Scenario: Continuous low-power illumination during daylight hours for vehicle visibility compliance. IC Role / Device Role / Timing Role: Dual-channel constant-current source driving parallel LED strings with independent brightness control. Use Value: ±5 % current accuracy ensures uniform luminance across DRL arrays; SPI programmability allows factory calibration and EOL testing. | Use Scenario: Dynamic beam shaping using multiple independently controlled LED zones for cornering, high/low beam transitions, and glare-free illumination. IC Role / Device Role / Timing Role: High-voltage buck driver enabling precise per-zone current regulation and fast PWM response for real-time beam modulation. Use Value: 10–80 V input range accommodates wide battery transients; diagnostic registers (V_LEDx_on/off, I-CHx) support closed-loop feedback and fault logging. |
| Turn Signal / Cornering Lights | Fog Lights / Position Lights |
Use Scenario: High-intensity flashing illumination requiring robust thermal management and short-circuit resilience. IC Role / Device Role / Timing Role: Two-channel driver powering sequential turn indicators or dynamic cornering LEDs with synchronized PWM dimming. Use Value: Thermal shutdown at +175 °C protects against LED thermal runaway; short-circuit/open-circuit protection prevents system failure during bulb replacement or wiring faults. | Use Scenario: Always-on low-power lighting for vehicle identification and safety in low-visibility conditions. IC Role / Device Role / Timing Role: Constant-current regulator delivering stable 30 mA–1.5 A per channel across cold cranking (10 V) and load dump (80 V) events. Use Value: Input UVLO and VIN monitoring (register 0x38h) ensure reliable startup and graceful shutdown; low IQ < 5 µA preserves battery during parking mode. |
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 buck controller with integrated gate drivers; supports up to 60 V input; ±3 % current accuracy; no integrated bootstrap diodes | Requires external bootstrap diodes; lower max input voltage; higher current accuracy but lacks VGG programmability | Preferred where tighter current tolerance is critical and board space allows external diodes |
| Infineon TLD5098EL | Single-channel automotive LED driver with integrated MOSFET; 60 V max input; ±5 % accuracy; SPI interface with diagnostics | Single-channel only; integrated FET limits flexibility and thermal design; no dual independent PWM inputs | Applicable only when channel count is reduced and integrated FET simplifies layout |
Compared with NCV78763 and TLD5098EL, the ASL2416SHNY uniquely combines dual independent PWM dimming, programmable VGG, integrated bootstrap diodes, and 80 V input capability - making it optimal for compact, high-flexibility automotive LED modules requiring diagnostic-rich operation.
Availability
ASL2416SHNY is available at Aetrix Electronics and suitable for automotive daytime running lights, adaptive front lighting systems, and position/turn signal modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for ASL2416SHNY 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.
The ASL2416SHNY belongs to NXP's automotive LED driver product line, engineered specifically for high-reliability exterior and interior lighting systems demanding AEC-Q100 qualification, wide input range, and comprehensive diagnostics.
FAQ
What is the maximum LED string voltage supported by the ASL2416SHNY?
The ASL2416SHNY supports an output voltage of up to 70 V, enabling configurations with up to 20 white LEDs (assuming ~3.5 V forward voltage per LED). This rating is specified under full operating conditions and accounts for headroom required by the buck topology. The actual usable string voltage depends on input voltage, sense resistor value, and hysteresis setting - all configurable via SPI registers 0x02h–0x0Ch and validated in the static characteristics section of the datasheet.
How does the ASL2416SHNY detect LED open or short circuits?
The ASL2416SHNY detects LED faults by measuring output voltage during PWM high and low states using dedicated registers (0x20h–0x23h). When the LED string is open, V_LEDx_on reads near VIN; when shorted, V_LEDx_off reads near 0 V. These values are converted using the formula 0.3548 × register_value − 0.56 V. The microcontroller compares these readings against expected thresholds to classify faults - no external ADC or comparator is required for basic open/short detection in the ASL2416SHNY.
Can the ASL2416SHNY drive both LED channels simultaneously with different currents?
Yes, the ASL2416SHNY supports independent current programming for each channel via separate SPI registers: LED current channel 1 (0x02h) and channel 2 (0x03h), along with corresponding hysteresis (0x0Bh/0x0Ch) and range bits (I_CH1/I_CH2 in 0x05h). Each channel uses its own RHx/RLx sense network and Gx/LXx switching path, enabling simultaneous operation at distinct current levels - for example, 300 mA on channel 1 and 800 mA on channel 2 - with ±5 % accuracy maintained per channel across temperature.
What is the purpose of the VGG pin on the ASL2416SHNY, and how is it configured?
The VGG pin on the ASL2416SHNY provides the regulated gate drive supply for external high-side N-MOSFETs. Its output voltage (5.58 V to 10.20 V) is set via the VGG control register (0x01h), with 0xA6h–0x5Dh being valid codes. The ASL2416SHNY monitors VGG status through diagnostic bits VGG_ok and VGG_err in register 0x37h. If VGG overload occurs, the regulator shuts down and VGG_err is asserted - requiring firmware intervention before recovery. Immediate read-back after write is mandatory to verify correct VGG programming in the ASL2416SHNY.
Does the ASL2416SHNY require external bootstrap diodes?
No, the ASL2416SHNY integrates bootstrap diodes internally, eliminating the need for external components between BSx and LXx pins. This integration reduces bill-of-materials count and PCB footprint while maintaining reliable bootstrap capacitor recharge during normal switching (when LXx is low) and during extended PWM-off periods via the built-in charge-maintaining mechanism. The internal diodes are rated for the full operating voltage range and support the specified 100 kHz–2 MHz switching frequency band in the ASL2416SHNY.
ASL2416SHNY 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)
ASL2416SHNY FAQ
1.How can I place an order for ASL2416SHNY through Aetrix?
Please submit a Request for Quotation (RFQ) for ASL2416SHNY 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 ASL2416SHNY reliable?
The price and inventory of ASL2416SHNY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASL2416SHNY is usually 5 days.
3.What payment methods are accepted for ASL2416SHNY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASL2416SHNY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASL2416SHNY?
ASL2416SHNY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASL2416SHNY 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 ASL2416SHNY?
For technical support, including ASL2416SHNY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASL2416SHNY requirements.
6.How does Aetrix verify that ASL2416SHNY is sourced from the original manufacturer or authorized distributors?
All ASL2416SHNY 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 ASL2416SHNY meets industry standards.
7.What is the process for return or replacement of ASL2416SHNY?
All ASL2416SHNY units undergo pre-shipment inspection (PSI). If there is an issue with ASL2416SHNY, 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 ASL2416SHNY part is unused and in its original packaging.
Return procedure for ASL2416SHNY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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