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RT8452 - High Voltage High Current LED Driver Controller

General Description

The RT8452 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.

Key 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 Frenquency z Easy Dimming Control : Analog or Digital Converting to Analog with One External Capacitor z True PWM Dimming : External FET Driver is Build- in z Programmable Soft Start to Avoid Inrush Current z Programmable Over Voltage Protection z VIN Undervoltage Lockout and Thermal Shutdown z 16-Lead WQFN and SOP Packages. z RoHS Compliant and Halogen Free A.

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Datasheet Details

Part number RT8452
Manufacturer Richtek
File Size 321.94 KB
Description High Voltage High Current LED Driver Controller
Datasheet download datasheet RT8452 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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® RT8452 High Voltage High Current LED Driver Controller for Buck Boost or Buck-Boost Topology General Description The RT8452 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 the maximum operating input voltage of 36V and output voltage up to 48V, the RT8452 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 done by either analog or digital.