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.
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| Fig 1: A complete circuit diagram of an LED TV's DC-to-DC converter, designed with the RT6908 IC. This diagram serves as an essential guide for technicians, detailing the pinout and component values. |
When troubleshooting common LCD panel problems like a white screen, no display, or a flickering image, you may find that a component connected to the DC-to-DC IC has been burnt out. Since a burnt component's value is often unidentifiable, this article provides a list of component values for the RT6908 IC circuit to help you with the replacement.
Please note that component values may vary depending on the specific model and size of your LCD panel.
Components List and its values of the RT6908 IC Circuit
Presented below is a comprehensive list detailing the components and their corresponding values for the DC-to-DC converter circuit diagram, meticulously engineered around the RT6908 IC. It is important to note that, depending on the television's brand and size, the values of these components may vary in accordance with established theoretical principles.
Capacitor 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 and Datasheet PDF for RT6908 IC
I am collecting information about which IC can be used instead of the RT6908 IC among LCD panels of different companies, so I will publish the alternative for the RT6908 IC here as soon as possible.
Here is the RT6908 IC Datasheet PDF
Related Post: RT9955 IC Schematic Circuit Diagram and pinout as Datasheet.
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