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  • RE: BUF16821-Q1: COM1/2 & OUT1-16 Current Definition

    Hi Sakai san, 1. Correct 2. Vcom current can exceed 100mA with less accuracy - fig 2, 100mA is a typical value. Thermal limitation is a function of total power dissipation and ambient temperature. The power dissipation is function of Vs, Vout…

  • RE: BUF16821-Q1: Output voltage when the novolatile memory has never been programmed

    Hello A.kimura, All Outputs EEPROM registers are programmed to 200hex, the output voltages are 0.5*Vs if used didn't program the registers Both plots show normal BUF16821 power on response. Vs should be above the internal power on reset( ~5V) to…
    • Answered

  • BUF16821-Q1: BUF16821-Q1 18ch mamma channel

    Resolved
    Part Number: BUF16821-Q1 Dear team, If we don't use Vcom function, Is it available to use 2 Vcom port to additional gamma channels? we need 18 gamma channels and non volatile memory for automotive display. but there is only BUF16821-Q1 which satisfy…
    • Resolved

  • RE: BUF16821-Q1: Quickly Power ON/OFF sequence application concern

    Hi Albert, The pink trace - CH3 is the voltage at BUF16821 Vs pin? What's the yellow trace-CH1? Assuming CH3 is Vs voltage, based on first picture VSD(CH2) is turned off before turning off the analog voltage Vs(CH3). This is not recommended, the…

  • RE: BUF16821-Q1: Read NV Gamma value is one of four is not correct

    Hi Costin: Thanks for your help. //----------------------test mode1: { buf = CTP_I2C_ReadDat_BUF16821(0x01); printf("\n Read 0x01 = 0x%x;",buf); buf = CTP_I2C_ReadDat_BUF16821(0x00); printf("\n Read 0x00 = 0x%x;",buf); } UART Print: Read 0x01…
    • Answered

  • BUF16821-Q1: application questions

    Resolved
    Part Number: BUF16821-Q1 Hi Team, Here have BUF16821-Q1 application questions that need your help for it as follows: 1. The timing spec of OUT1~OUT and VOCM has the output after VS applied? 2. In 7.3.6 DIE_ID and DIE_REV Registers spec. Can't catch…
    • Resolved
    • Answered

  • BUF16821 circuit suggestion

    Resolved
    Other Parts Discussed in Thread: BUF16821 Hola, Below is the BUF16821 's circuit, can someone have a advise for the filter capacitor that where it should be connected to the power ground or signal ground？ And the circuit need to be modified if any…
    • Resolved

  • BUF16821 circuit suggestion

    Other Parts Discussed in Thread: BUF16821 Hola, Below is the BUF16821's circuit, can someone have a advise for the filter capacitor that where it should be connected to the power ground or signal ground？ And the circuit need to be modified if any…

  • BUF16821 circuit suggestion

    Hola, Below is the BUF16821 's circuit, can someone have a advise for the filter capacitor that where it should be connected to the power ground or signal ground？ And the circuit need to be modified if any？Thanks ～

  • BUF16821-Q1: application concern about the isolation resistor values for a range of capacitance

    TI Thinks Resolved
    Part Number: BUF16821-Q1 Hi all, There has a R ISO vs C LOAD application that need your help for it. There has a table about RISO vs CLOAD in SBOA134. But my customer would like to use 10ohm vs 10uF for VCOM output due to can let VCOM ripple&noise…

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