RT6908 IC Schematic Circuit Diagram Pinout

RT6908 DC-To-DC Converter IC:

This page publishes the schematic circuit diagram, pinout datasheet, voltage details, and all information about the RT6908 IC. Programmable RT6908 is a unique IC for power solutions of specific TFT LCD panels. The IC is built in the Quad Flat No-Lead (WQFN) package. It has 40 terminals, and its exposed pad is connected to the ground to receive sufficient current.  RT6908 IC is made by Richtek.

RT6908 is a boost and buck converter IC with high current output capability, making it a unique IC for power management of large-screen LCD TVs and monitor panels. Its input voltage range is 9 volts to 16 volts.

RT6908 IC Input and Output Voltage Details:

Vin: The input or operating voltage is 9 volts to 16 volts, as LCD panels require.

AVDD: For most LCD panels, the AVDD voltage is 15.6 volts. VGH- 35.5 Volts. VI/O: 3.3 Volts.

VGL:  -6 Volts, Vcore: 1.1 Volts.

RT6908 IC Schematic Circuit Diagram and Pinout

Many of you have asked me for the schematic circuit diagram and datasheet of the RT6908 IC in the comments section of YouTube videos and through Facebook messages.

I have designed the circuit diagram to your requirements and published it here. The pin configuration or pinout of the RT6908 IC is randomly shown in the circuit diagram itself. Moreover, the values ​​of the components are mentioned below the circuit diagram.

RT6908 IC Schematic Circuit Diagram

RT6908 IC Circuit Diagram and pinout

When a problem occurs in an LCD, such as a white screen, black screen, no display, blurry image, flickering image, or vertical or horizontal lines, then in some cases, if a component connected to the DC-to-DC IC burns out, there is no way to identify its number. In this case, the value of the elements of the RT6908 IC circuit is published here so that its value can be known when changing the component. However, the components' value may differ for different sizes and models of LCD panels.

Components List and its values of RT6908 IC Circuit

Capacitors Value of RT6908 IC Circuit:

C1- 22µF, C2- 10µF, C3- 2.2nF, C4- 4.7nF, C5- 120µF, C6- 1µF, C7- 1µF, C8- 10µF, C9- 1µF, C10-47nF, C11- 0.1µF, C12-100pF, C13- 22µF, C14- 0.22µF, C15- 0.1µF, C16- 0.22µF,

C17- 22nF, C18- 10µF, C19-  , C20- 0.22µF, C21- 10µF, C22- 1nF, C23- 470pF, C24- 22µF, C25- 1µF, C26- 10pF, C26- 10pF, C27- 47nF, C28- 0.22µF, C29- 10µF.

Value of Resistors:

R1- 100KΩ, R2- 47KΩ, R3- 15KΩ, R4- 120KΩ, R5- 1.8KΩ, R6- 1.8KΩ, R7- 6.8Ω, R8- 6.8Ω, R9- 6.8Ω, R10- 6.8Ω,  R10 for Gate of Q3- 20KΩ, R11- 10KΩ, R12- 24KΩ, R13- 1.5Ω, R14- 1.2KΩ,

R15-   R16- 4.7KΩ, R17- 4.7KΩ, R18-4.7KΩ, R19- 100KΩ, R20- 6.8Ω, R21- 6.8Ω, R22-  R23- 24KΩ, R24- 33KΩ, R25- 47KΩ, R26- 15KΩ.

Inductors Value:

L1- 6.8µH, L2- 10µH, L3- 4.7µH.

Equivalent or substitute for RT6908 IC

I am collecting information about which IC can be used instead of RT6908 IC among LCD panels of different companies, so I will publish the alternative for RT6908 IC here as soon as possible.

Related Post:  RT9955 IC Schematic Circuit Diagram and pinout as Datasheet.