Three-Channel Automotive LED Buck Driver
Design Files
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Two-Channel Automotive LED Buck Driver
The ASL2416SHN is a two-channel buck mode LED driver IC delivering constant average DC current to LEDs independent of the input voltage. It provides an SPI interface for extensive control and diagnostics communication with an external microcontroller. It supports up to two output channels meaning that with one driver IC, 1 or 2 LED strings can be driven independently of each other. It provides a cost-effective design solution, specifically targeting automotive exterior lighting applications. Read more on the ASL2416SHN Data sheet.
The ASL2417SHN is a two-channel buck mode LED driver IC with a Limp Home mode feature. It provides an SPI interface for extensive control and diagnostic communication with an external microcontroller and integrates a customer programmable Limp Home mode. The driver IC allows configurable operation during the Limp Home mode in case SPI communication with the microcontroller has failed. Once the loss of SPI communication is detected, the Limp Home mode gets activated. During Limp-home mode, the outputs of the IC are operating according to a pre-defined condition stored in a non-volatile memory (NVM) programmable by the customer at their end of line. Read more on the ASL2417SHN Data sheet.
HVQFN32 Package
Product Details
Block Diagram
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Features
Key Features
- The ASL2416SHN is an automotive grade product that is AEC-Q100 grade 1 qualified
- Operating ambient temperature range of -40 °C to +125 °C
- Wide operating input voltage range from +10 V to +80 V
- Able to drive up to 20 LEDs, wide operating LED voltage range regulated from 2.5 V to 70 V
- Output current of up to and above 1.5 A with high LED current accuracy of ±5 % over the complete operating temperature range
- Output current programmable via SPI interface
- Read back programmed current via SPI
- Two output current ranges, programmable via SPI interface with 5 % accuracy
- Hysteretic converter
- Fast gate drive for high efficiency
- Gate driver with level shifter
- Programmable internal gate driver voltage regulator
- Support logic level and standard level FETs
- Integrated bootstrap diode
- PWM inputs for individual dimming of each channel
- Low Electro Magnetic Emission (EME) and high Electro Magnetic Immunity (EMI)
- Input voltage monitoring and input under voltage protection
- Output voltage monitoring
- Control signal to enable the device
- Junction temperature monitoring via SPI
- Small package outline HVQFN32
- Low quiescent current <5 μA at 25 °C when EN = 0
- Short-circuit and open-circuit output protection
Part numbers include: ASL2416SHN, ASL2417SHN.
Related products
Two-Phase Automotive LED Boost Driver with a Limp Home Mode
Single-Phase Automotive LED Boost Driver with Limp Home Mode
Four-Phase Automotive LED Boost Driver
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Documentation
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