Microchip Technology, Inc. LED Drivers AT9933LG-GVAO

The AT9933LG-GVAO is a constant current LED driver IC designed for LED lighting applications, utilizing a hysteretic boost-buck (ƒÜuk) topology. It features variable frequency operation and low electromagnetic interference (EMI), making it suitable for various environments. The device includes an internal 75V linear regulator, input and output current sensing, and input current limit capabilities, which enhance its performance during startup and under undervoltage or overload conditions. This LED driver supports PWM dimming with a duty cycle range of 0% to 100%, allowing for flexible brightness control. It is rated for operation in ambient temperatures up to 125¬8C, which broadens its applicability in high-temperature environments. The AT9933LG-GVAO comes in an 8-lead SOIC package, facilitating integration into compact designs.