R1293 Series
Multi Power Supply IC with Amplifier for LCD

Download Datasheet

  • Description

    The R1293 is a multi power supply IC dedicated for mid-size TFT LCD panels. The R1293 consists of a PWM control step-up DC/DC converter, an LDO regulator, a VCOM amplifier and six GAMMA amplifiers. The output noise can be reduced by SEL pin. (SEL pin "H": normal mode, SEL pin "L": low noise mode.) The MOSFET for step-up DC/DC converter is built-in and, low power operation is realized by standby mode. The package is 4mm square QFN(PL)0404-32.

  • Spec
    Input Voltage Range DC/DC: 2.2 V to 5.5 V (6.5 V)
    LDO: 2.2 V to 5.5 V (6.5 V)
    AMP: 5.0 V to 16 V (24 V)
    Operating Temperature Range -40°C to 85°C (125°C)
    Supply Current Typ. 300 µA
    Standby Current Typ. 60 µA
    Output Voltage Range DC/DC: Max. 16 V (Externally Adjustable)
    LDO: 1.8 V to 2.5 V (Internally Fixed)
    Output Voltage Accuracy LDO: ±1.0%
    Feedback Voltage DC/DC: 1 V
    Feedback Voltage Accuracy DC/DC: ±15 mV
    Output Current LDO: 350 mA
    Oscillator Frequency Typ. 300 kHz to1 MHz (Externally Adjustable)
    Maximum Duty Cycle Typ. 90% (Externally Adjustable)
    Package QFN(PL)0404-32
    Buffer Amplifier Input Voltage Range VCOM: 1.5 V to VBUFF -1.5 V
    GAMMA: 0 V to VBUFF
    Buffer Amplifier Output Current VCOM: -100 mA to 100 mA
    GAMMA: -10 mA to 10 mA

    Protections / Functions

    TSD ILX OCP OVP UVLO OVLO Reverse Shutdown Soft Start SSCG PGOOD Auto Discharge Anti-ringing Sequencing Max Duty Ext. Phase LED Adjust
  • Technical
    • Typical Application

      Typical Application
      For external parts, please refer to the datasheet.
    • Related Links

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  • Quality &
    • Refer to the datasheets for the details on the product.
    • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

Download Datasheet

Functional Description

TSD Thermal Shutdown Function
ILX LX Current Limit Function
OCP Overcurrent Protection
OVP Overvoltage Protection
UVLO Undervoltage Lockout Protection
OVLO Overvoltage Lockout Protection
Reverse Reverse Current Protection Circuit
Shutdown Shutdown Function
Soft Start Soft Start Function
SSCG Spread Spectrum Clock Generator Function
PGOOD Power Good Output
Auto Discharge Auto Discharge Function
Anti-ringing Anti-ringing Switch Function
Sequencing Start-up Sequencing Control
Max Duty Maximum Duty Cycle
Ext. Phase Externally Adjustable Phase Compensation
LED Adjust LED High-speed Dimming Control

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