2-Channel LCD Panel Bias Supply with Single Inductor

Features

  • 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
  • Positive output voltage range
    • +4.0V to +5.2V (100mV/step)
  • Negative output voltage range
    • -4.0V to -5.2V (100mV/step)
  • Programmable regulator offset voltage
  • 1.0% output voltage accuracy
  • Regulated output current up to 80mA
  • Programmable active discharge
  • I2C compatible interface
  • 1µA shutdown current
  • Pb-free WLCSP-15 and TDFN-14 packages
  • RoHS and Green Compliant
  • -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 4.0~5.2V, -4.0~-5.2V, 100mV-steps 1.5% 6µA WLCSP-15 2.2×1.45-15, TDFN 3×2.5-14

Typical Application Diagram