Boost Controller with Dimming Control


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The RT8525 is a wide input operating voltage range step up controller. High voltage output and large output current are feasible by using an external N-MOSFET. The RT8525 input operating range is from 4.5V to 29V.

The RT8525 is an optimized design for wide output voltage range applications. The output voltage of the RT8525 can be adjusted by the FB pin. The PWMI pin can be used as a digital input, allowing WLED brightness control with a logic-level PWM signal.


  • LCD TV, Monitor Display Backlight
  • LED Driver Application
Key Spec.
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 29
Iq (typ) (mA) 1.3
VFB (typ) (V) 1.25
Freq (typ) (kHz) 200
Duty (max) (%) 90
Features Adjustable Current Limit;Adjustable Frequency;Adjustable Soft-Start;Current Mode Control;Enable Input;OCP;OVP;Power Good;UVP
Package Type SOP-14
  • VIN Range : 4.5V to 29V
  • Programmable Soft-Start Time
  • Programmable Boost SW Frequency from 50kHz to 600kHz
  • Output Over Voltage Protection
  • Output Under Voltage Protection
  • 14-Lead SOP Package
  • RoHS Compliant and Halogen Free
TitleLast UpdateShareDownload
Boost Controller with Dimming Control2011/12/28
Title Last Update ShareDownload
Boost Controller with Dimming Control 2015/05/19
Application Notes
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