The MAX17116 includes two current-mode 1.4MHz switch mode power-supply (SMPS) regulators for active-matrix organic light-emitting diode (AMOLED) displays. The positive supply is provided by a step-up regulator with a synchronous rectifier. The negative supply is provided by an inverting regulator with a synchronous rectifier.
The step-up DC-DC converter is a high-accuracy 250mA regulator with an integrated power MOSFET switch and synchronous rectifier. The synchronous rectifier improves efficiency and also provides True Shutdown™. Its 4.6V (fixed) output efficiency exceeds 85% at 150mA from a 3.7V input. A built-in, 7-bit, digital soft-start function controls startup inrush currents.
The inverting DC-DC converter is a high-accuracy 250mA regulator with a built-in power MOSFET switch and synchronous rectifier. Its -5.4V to -1.5V output efficiency exceeds 80% at 150mA from a 3.7V input. A built-in, 7-bit, digital soft-start function controls startup inrush currents. The internally set output voltage is adjusted through a unique communication protocol through the single EN pin.
The IC is available in a 12-pin, 3mm x 3mm x 0.5mm, ultra-thin DFN package with exposed pad and 0.5mm lead spacing to facilitate placement on extremely narrow circuit boards and a 24-pin, 4mm x 4mm, thin QFN package with exposed pad.
Applications
- Automobile Navigation
- OLED Displays
- Phone, DSC Displays
