Issue Number | 001 September 2009 New Product Announcement AP5727 Boost converter for the bias voltage of small size OLED and LCD displays The AP5727 is a high efficiency PWM boost DC/DC converters (integrated switch) designed to generate bias voltages for small OLED and TFT-LCD display screens. The device can generate up to 30V from a Li-Ion cell. AP5727 switches at 1.2MHz allowing use of tiny external components. Internal compensation, built-in soft-start and integrated switch reduce the component count, PCB area and cost. The AP5727 has a 1.25V feedback voltage and is available in SOT23-5, making it compatible with industry standard boost converter used for bias voltage generation. Diodes Advantage High Efficiency: 84% Typical Longer battery life Fast 1.2MHz Switching Frequency Smaller inductor and capacitor size Current limit and UVLO protections Extra protection for safe operation Built-in Soft-Start function Extra protection for safe operation – reduces inrush current at start up Thermal shutdown Extra protection for safe operation Applications Small size TFT-LCD Bias power supply RF amplifier bias voltage OLED bias supply for clamshell mobile phone sub- display www.diodes.com Issue Number | 001 September 2009 New Product Announcement AP5727 Boost converter for the bias voltage of small size OLED and LCD displays Electrical characteristics Part Number Typical supply current Maximum switch voltage mA V V dB Ω 0.5 30 2.7-5.5 1.25 0.95 AP5727 Operating Feedback voltage voltage VFB Switch RDS(ON) Protection Operating temperature o OCP, UVLO, thermal shutdown Package C -40 to 85 SOT23-5 To find out more information: Product page: http://www.diodes.com/products/catalog/detail.php?item-id=5463 Datasheet: http://www.diodes.com/datasheets/AP5727.pdf Quiescent current (mA) Standby current (μA) Switch resistance (Ω) Dimming OVP Soft start VFB (V) 0.5 80 0.03 3.5 0.7 DC/PWM No No 1.23 ZXLD1601 2.5-5.5 28 1 85 0.06 0.01 1.75 DC/PWM No No 1.025 ZXLD1615 2.5-5.5 28 1 80 0.06 0.01 1.75 DC/PWM No No 1.25 30 1.2 84 0.5 0.1 0.95 DC/PWM No Yes 1.25 Part Number AP5727 2.7-5.5 Package Efficiency (%) 28 TA (oC) Frequency (MHz) ZXLB1600 1.6-5.5 Input voltage (V) Max output Voltage (V) Bias generators for small screen displays 0~ +70 -40 ~ +85 -40 ~ +85 -40 ~ +85 MSOP10 SC70-6 SOT23-5 SOT23-5 Ordering information Part Number Part mark Bulk quantity Package Reel size AP5727WG-7 H8 3kpcs/tape & reel SOT23-5 7", 178mm All variants are in packages that are “Green” Molding Compound (No Br, Sb) with Lead Free Finish/RoHS Compliant (Note 1) Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex notes www.diodes.com