2-Channel LCD Panel Bias Supply with Single Inductor

  • Wide input voltage range (2.7V to 5.5V)
  • Dual output regulator with single inductor
  • High efficiency above 85%
  • Charge pump with PFM mode at light load
  • Programmable output voltages with external resistors
  • Positive output voltage range
    • +4.0V to +6.3V (100mV/step)
  • Negative output voltage rangerange
    • -4.0V to -6.3V (100mV/step)
  • 1.5% output voltage accuracy
  • Regulated output current up to 80mA
  • Active output discharge when disabled
  • Integrated compensation and feedback circuits
  • 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 Resistor programmable 80mA 4.8~5.5V, -4.8~-5.5V, 100mV-steps 1.5% 1uA WLCSP-15 2.2×1.45-15, TDFN 3×2.5-14

 

Typical Application Diagram

KTD2159