EUP2512 EUTECH | Alldatasheet

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Technical content

DS2512 Ver1.0 Mar. 2011 Dual Channel DC-DC Converter for AMOLED

DESCRIPTION

The EUP2512 generates power supply rails for active-matrix organic light emitting diode (AMOLED) displays. It includes a step-up DC-DC and an inverting DC-DC converter making it suitable for battery operated products. The step-up converter is a high-accuracy power-efficiency 250mA output regulator. It features an internal 0.5Ω N-MOSFET, 0.6 Ω P-MOSFET and 1.4MHz operation frequency allowing the use of small inductor and capacitors. The integrated synchronous rectifier allows the true shutdown of the outputs. An internal digital soft-start function controls inrush currents. The step-up converter output can be externally set 4V to 8V. The inverting converter is a high-accuracy 250mA regulator. It features an internal 0.4Ω N-MOSFET, 0.5 Ω P-MOSFET and 1.4MHz operation frequency allowing the use of small inductor and capacitors. Its -6V to -1V output efficiency up to 80% at 150mA. An internal digital soft-start function controls inrush currents. The EUP2512 is available in a small (3mm × 3mm × 0.6mm) 12 pin thin TDFN package and operates over the -40ºC to +85ºC temperature range.

FEATURES

/circle6 2.5V to 4.5V Input Supply Range /circle6 1.4MHz Current Mode Step Up Regulator - External Programmable 4V~8V Output Voltage - Maximum 250mA Output - High Accuracy (+/- 1%) - Built-In 18V, 0.5Ω N-MOSFET - Built-In 18V, 0.6 Ω P-MOSFET Synchronous Rectifier - Cycle-by-Cycle Current Limit - More than 85% Efficiency at 150mA - Good Low-Duty Factor Operation /circle6 1.4MHz Current Mode Inverting Regulator - -6V to -1V - Maximum 250mA Output - High Accuracy (+/- 1%) - Built-In 18V, 0.5Ω P-MOSFET - Built-In 18V, 0.4Ω N-MOSFET Synchronous Rectifier - Cycle-by-Cycle Current Limit - Up to 80% Efficiency at 150mA /circle6 True Shutdown Mode for Dual Outputs /circle6 Timer-Delayed Output Under-Voltage Shutdown for Dual Outputs /circle6 Over Temperature Protection /circle6 12 Pin 3mm × 3mm thin TDFN Package /circle6 RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free

APPLICATIONS

/circle6 OLED Displays /circle6 Phone, DSC Display /circle6 Automobile Navigation

DS2512 Ver1.0 Mar. 2011 Typical Application Circuit Figure1. Block Diagram Figure2.