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RT8482 - High Voltage High Current LED Driver Controller

Description

The RT8482 is a current mode PWM controller designed to drive an external MOSFET for high current LED applications.

With a current sense amplifier threshold of 190mV, the LED current is programmable with one external current sense resistor.

Features

  • z High Voltage Capability : VIN Up to 36V, VOUT Up to 48V z Buck, Boost or Buck-Boost Operation z Current Mode PWM with 350kHz Switching Frequency z Easy Dimming : Analog, PWM Digital or PWM Converting to Analog with One External Capacitor z Programmable Soft Start to Avoid Inrush Current z Programmable Over Voltage Protection z VIN Under Voltage Lockout and Thermal Shutdown z 16-Lead WQFN and SOP Packages z RoHS Compliant and Halogen Free.

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Datasheet Details

Part number RT8482
Manufacturer Richtek
File Size 263.79 KB
Description High Voltage High Current LED Driver Controller
Datasheet download datasheet RT8482 Datasheet

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Full PDF Text Transcription

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® RT8482 High Voltage High Current LED Driver Controller for Buck Boost, or Buck-Boost Topology General Description The RT8482 is a current mode PWM controller designed to drive an external MOSFET for high current LED applications. With a current sense amplifier threshold of 190mV, the LED current is programmable with one external current sense resistor. With a maximum operating input voltage of 36V and output voltage up to 48V, the RT8482 is ideal for Buck, Boost or Buck-Boost operation. With 350kHz operating frequency, the external inductor and capacitors can be small while maintaining high efficiency. Dimming can be either analog or PWM digital.
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