The RT9397BF is a highly integrated step-up charge pump and inverting charge pump to generate positive and negative output voltage. The output voltages can be adjusted from ±4.5V to ±6V through external feedback resistors. The part maintains highest efficiency by utilizing a x1.33/x1.5/x1.75/x2 mode fractional charge pump with automatic mode transition. The RT9397BF is available in a WQFN-20L 3x3 package to achieve optimized solution for PCB space.
Feature
- 2.7V to 4.5V Supply Voltage Range
- Over 80% Average Efficiency of Battery Life
- Support up to 50mA Output Current
- Low 1μA Shutdown Current
- Internal Soft-start Function
- Short Circuit Protection Function
- Over-Voltage Protection Function
- Over-Temperature Protection Function
- Charge Pump Controller with Automatic Mode Transition
- Adaptive x1.33/x1.5/x1.75/x2 Charge Pump Mode Transition for Positive Voltage and x-1 for Negative Voltage
- Low Input Noise and EMI
- Output with Fast Discharge when IC shutdown
- Adjustable Output Voltage Through External Feedback Resistor
- Available in 20-Lead WQFN Package
Applications
- TFT-LCD Smart Phone Display
- Mobile Phone
- Tablet, Notebook, Pad
