HomeProductsLED DriversDC LED DriversAutomotive LED Drivers

SA32774QJQ

Production
24-Channel LED Driver for Rear Light Application
Datasheet
SA32774QJQ 24-Channel LED Driver for Rear Light Application Datasheet
    Part numberSA32774QJQ
    Description24 CH x100mA linear LED driver with CAN interface
    Channel(#)24
    TopologyLinear
    Dimming modePWM, Digital
    Fsw(MHz)
    Vin (min) (V)4.8
    Vin (max) (V)18
    Iout (max) (A)0.1
    PackageQFN7×7-48
    ApplicationAutomotive rear light, external light
    • Supports LED Supply Voltage Range from 4.9V up to 16V
    • 2Mbps CAN Physical Bus Interface with UART Protocol
    • 10-bit Resolution PWM Generator for 24 Channels
    • 100mA Maximum Channel Current
    • Adjustable LED Driver Current 100µA/step
    • Direct PWM Input  10-bit ADC for LED Open, Short and System Diagnosis
    • Single Lamp Mode Behavior Option
    • Automatic Supply and Temperature Dependent LED Current Derating
    • LED Channel Individual bin Class Brightness Correction
    • External LED bin Class Resistor Evaluation
    • Available in AEC-Q100 Grade 1 

    The SA32774 is a 24-channel LED driver designed for rear light applications, supporting both PWM dimming and analog dimming. It integrates a 10-bit PWM generator and allows for dual-range configurable current.

    It supports the UART protocol with a CAN physical layer to control the LED for fast animation, which improves the system's EMI. There are various modes for users to realize different functions. Each mode has its own current and duty cycle specifications.

    The SA32774 integrates a current derating function which helps to reduce the power loss.

    The SA32774 includes diagnostic features to indicate fault conditions such as LED open, LED short, and overtemperature protection (OTP).

    The device is available in a 7x7 mm QFN package. 

    Technical & Design Documentation