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The RT8498 is a current-mode LED driver supporting wide input voltage range from 3V to 18V and output voltage up to 18V. With internal 350kHz operating frequency, the size of the external PWM inductor and input/output capacitors can be minimized. High efficiency is achieved by a 100mV current sensing control. LED dimming control can be done from either analog or PWM signal. The RT8498 provides an internal soft-start function to avoid inrush current and thermal shutdown to prevent the device from overheat. The RT8498 is available in the SOT-23-6 package.
High Voltage : VIN Up to 18V, VOUT Up to 18V
Built-In 2A Power Switch
Current-Mode PWM Control
350kHz Fixed Switching Frequency
Analog, PWM Digital or PWM Converting to Analog with One External Capacitor
Internal Soft-Start to Avoid Inrush Current
Under-Voltage Lockout
Internal Over Voltage Protection to Limit Output Voltage
Cycle-by Cycle Current Limit
Thermal Shutdown
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