Products & Services

See also: Categories | Featured Products | Technical Articles

Conduct Research Top

  • Design Guideline: AAT3190 Positive/Negative Charge Pump
    with up to six charge pump stages for both the positive and negative outputs. Each output can regulate up to 25V with a resistive divider, diodes, and flying capacitor solution (see Figures 1 through 3).
  • Connecting LEDs: Serial vs. Parallel
    battery (4.2V to 3.0V) used to power four white LEDs (LED forward voltage, VF, is typically 3.6V to 2.5V, depending on forward current, IF) to backlight a QVGA TFT panel. With a parallel configuration, all LED cathodes or anodes are connected together. This arrangement typically requires a buck-boost