方案Large DisplayPMULCD panel power supply solution – Discrete

LCD panel power supply solution – Discrete



One or more products of Chipone or iML may be covered by U.S.Pat.NO.7.233.305

20V high current drive rail to rail VCOM / Gamma buffer:iML2142
Features:
• Beyond the rails input capability
• 600mA peak output current
• 30MHz - 3dB bandwidth
• Rail-to-rail output swing
• Power range is 4.5V to 20V
• Low supply current per amplifier: 1.2mA
• High slew rate: 50V / us
• Unity-gain stable
• Protective function
        Over Temperature Protection (OTP)
        Overcurrent protection (OCP)
        Output short circuit protection
• Ultra-small MSOP, TDFN and SOIC packages
• RoHS compliant


Programmable Gamma Buffer DVR and VCOM Buffer with Embedded Nonvolatile Memory: iML7991
Features:
• 128-step programmable sink-current output for DVR_OUT
• DVR_OUT voltage adjustable via SET pin
• Built in VCOM buffer
• Guaranteed monotonic over temperature for DVR_OUT and Gamma Buffer outputs
• 14-channel analog output for gamma reference voltages with 10-bit DAC resolution
• 1024-step digitally programmable gamma reference voltages
• 1 STATIC_HI voltage input used as upper reference voltage for internal DAC operation
• Digital supply voltage (DVDD): 2.3V to 4V
        NVM read: Minimum DVDD 2.3V
        NVM write: Minimum DVDD 2.7V
• Analog supply voltage (AVDD): 6.5V to 18V

• I2C interface

• 32-TQFN (0.85mm max) with thermal pad



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