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i8973 IC used in MT3151A05-5-XC-5 LCD TV panel. Many of you have asked me for the schematic circuit diagram and datasheet of i8973 IC through Facebook e-mail and YouTube comments; I have searched the internet many times for the pdf datasheet circuit diagram of i8973 IC, and finally, I found several T-con boards of LCD panel. I saw that the circuit of i8973 IC is precisely similar to the circuit of an IC of a different number. Then, I did a lot of testing and was sure it was a substitute IC for the i8973 IC. Then, I collected the datasheet of that IC and designed the schematic circuit diagram of the i8973 IC for you.
i8973 is a Quad Flat No lid Packeg IC. The number of connecting terminals at the bottom of this IC is 10X4=40. This IC includes overload, short circuit, and thermal protection circuits, so it has a long life and usually does not damage.
The i8973 IC contains a microcontroller section, EEPROM, digital-to-analogue converter (DAC), and I2C interface for perfect performance. This IC is controlled by data and clock pulses, which perform excellent power management and signal processing of the LCD panel.
Internal Feature of i8973 IC
• Operating voltage (VIN) - DC 8V to 14V
• Positive boost Regulator for AVDD 13.5V to 19.5 programmable output.
• Buck regulator for 2.2 to 3.7 Volts (The circuit diagram is shown as VI/O or voltage input/output).
• Positive boost voltage regulator for VGH 20V to 40V, it is also programmable.
• Switching frequency - 750KHz, which is fixed.
• Negative charge pump regulator for VGL -4.5V to -13V operated by programmable system.
• VGH temperature compensation.
• Internal 20V OPAMP with +/- 300mA short current for output.
[ Schematic Circuit Diagram of RT6908 IC ]
i8973 IC Circuit Diagram Pinout Data and Voltage Details
Below is the schematic circuit diagram of the i8973 IC, pinout, input-output voltage details, and information on the equivalent IC of the i8973 IC.
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| i8973 IC Circuit Diagram Pinout Data |
I designed this circuit diagram recalling the T-con or scalar board, where L-1 had a value of 100µH, and L-2 had a value of 4.7µH.
List of components of i8973 IC circuit and their values.
Capacitor: C1- 22µfd, C2- 1µfd, C3- 1µfd, C4- 10µfd, C5 C6 C7 C8- 10µfd, C9- 1µfd, C10- 10µfd, C110.1µfd, C12- 10µfd, C13- 10µfd, C14- 10µfd, C15- 0.47µfd, C16- 10µfd, C17- 0.22µfd, C18- 1µfd, C19- 0.22µfd, C20- 1µfd, C21- 10µfd, CCO- 470pf.
Resistor: R1 R2- 47.7KΩ, R3- 2.2Ω, R4- 10KΩ, R5- 10KΩ, R6- 2.2Ω, R7- 1KΩ, RCO- 75KΩ, RTC1- 51KΩ, RTC2- 22KΩ, RNTC- NCP18XH103F03RB.
Input and Output Voltage of i8973 IC Circuit Board
What is the equivalent IC of i8973
The equivalent or substitute IC for i8973 IC is CS902-A-R IC. By closely observing the two LCD scalar boards using these two ICs, it is found that the two circuits are very similar, so instead of the i8973, the CS902-A-R IC can be used in LCD TVs or Monitor display panels.
Special note: I noticed many people search Google by typing '18973 IC' to find the datasheet pdf of the i8983 IC.
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