LCD Bias Supply ICs are multi-channel voltage converter ICs used to power the positive and negative bias supplies needed by LCD TFT panels. Discrete LCD Bias Supplies are used in Smartphones and Tablets with Full HD (FHD) or higher resolution panels. Utilizing a single boost converter and charge-pump technology, they provide multiple outputs with a single inductor; these products provide an extremely small and highly efficient programmable solution.
Product selection
| Part Number | Description | VIN (MIN) V) | VIN (MAX) (V) | Number of LEDs/Channel | LED Channels | Total Number of LEDs | Brightness Control | Control | Switching Frequency (MHz) | Max. Current per Channel (mA) | VOUT (V) | Accuracy (%) | IQ shutdown (SDA=SCL=1.8V (µA) | Max Current (A) | Package | Advantages |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KTD2150 | 2-Channel LCD Panel Bias Supply with Single Inductor | 2.7 | 5.5 | I2C | 3.2V~6.4V, -3.2V~-6.4V, 12.5mV-steps | 1.50% | 6µA | 0.08 | WLCSP-15 2.2x1.45-15 | Single inductor, highest efficiency, most flexible shutdown mode for power savings, programmable active output discharge | ||||||
| KTD2151 | 2-Channel LCD Panel Bias Supply with Single Inductor | 2.7 | 5.5 | I2C | 4.0~5.2V, -4.0~-5.2V, 100mV-steps | 1.50% | 6µA | 0.08 | WLCSP-15 2.2x1.45-15 | Single inductor, high efficiency, flexible I2C control, programmable active output discharge | ||||||
| KTD2151B | 2-Channel LCD Panel Bias Supply with Single Inductor | 2.7 | 5.5 | I2C | 4.0~6.3V, -4.0~-6.3V, 100mV-steps | 1.50% | 100nA | 0.08 | WLCSP-15 2.2x1.45-15 | Single inductor, high efficiency, simplest shutdown mode for power savings, programmable active output discharge | ||||||
| KTZ8850 | 1-Channel LED Driver plus, 2-Channel LCD Panel Bias | 3 | 5.5 | 10 | 1 | 10 | I2C/PWM | I2C | 1/1.8 | 100 | 4.0~6.3V, -4.0~-6.3V, 12.5mV-steps | 2.00% | 1µA | 0.08 | WLCSP-18 2.47 x 1.27 | Small size, High Efficiency, flexible I2C control |
| KTZ8863A | 3-Channel LED Driver plus, 2-Channel LCD Panel Bias | 2.9 | 5.5 | 8 | 3 | 32 | I2C/PWM | I2C | 1.0/0.5 | 30 | 4.0~6.3V, -4.0~-6.3V, 50mV-steps | 1.50% | 1µA | 0.12 | WLCSP-24 1.72 x 2.45mm | Smaller and lower component count, I2C & PWM dimming, Integrated protection |
| KTZ8864A | 4-Channel LED Driver plus, 2-Channel LCD Panel Bias | 2.9 | 5.5 | 8 | 4 | 32 | I2C/PWM | I2C | 1.0/0.5 | 30 | 4.0~6.3V, -4.0~-6.3V, 50mV-steps | 1.50% | 1µA | 0.12 | WLCSP-24 1.72 x 2.45mm | Smaller and lower component count, I2C & PWM dimming, Integrated protection |
| KTZ8866 | High Efficiency 6-CH LED Backlight Driver with Dual LCD Bias Power | 2.7 | 5.5 | 10 | 6 | 60 | I2C/PWM | 1 | WLCSP47-28 | High Efficiency, Small size, Flexible I2C & PWM dimming |