2-Channel LCD Panel Bias Supply with Single Inductor
Features
- 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
