2-Channel LCD Panel Bias Supply with Single Inductor

  • Input voltage range (2.7V to 5.5V)
  • Dual output regulator with single inductor
  • High efficiencyabove 85%
  • Charge pump with PFM mode at light load
  • Programmable output voltages
  • Positive output voltage range
    • +3.2V to +6.4V (12.5mV/step)
  • Negative output voltage range
    • -3.2V to -6.4V (12.5mV/step)
  • Programmable regulator offset voltage
  • 1.5% output voltage accuracy
  • Regulated output current up to 80mA
  • Programmable active discharge
  • I2C compatible interface
  • 1 µA shutdown supply current
  • Pb-free WLCSP-15 and TDFN-14 packages
  • -40°C to +85°C Temperature Range

Applications

  • Smartphone TFT-LCD
  • Tablet TFT-LCD
  • General Dual Power Supply Applications

Key Electrical Specifications

Vin(Min) Vin(Max) Control Max. Current per Channel Vout Accuracy IQ shutdown
(SDA=SCL=1.8V)
Package
2.7 5.5 I2C 80mA 3.2V~6.4V, 3.2V~-6.4V, 12.5mV-steps 1.5% 6uA WLCSP-15 2.2×1.45-15, TDFN 3×2.5-14

 

Typical Application Diagram

KTD2150