STOD03ATPUR STMicroelectronics

STOD03A Dual DC-DC converter for powering AMOLED displays Datasheet - production data Fast discharge outputs of the circuits after shutdown Package DFN12L (3 x 3) 0.6 mm height Applications Active matrix AMOLED power supply DFN12L (3 x 3 mm) Cellular phones Camcorders and digital still cameras Multimedia players Features Step-up and inverter converters Description Operating input voltage range from 2.3 V to The STOD03A is a dual DC-DC converter for 4.5 V AMOLED display panels. It integrates a step-up Synchronous rectification for both DC-DC and an inverting DC-DC converter making it converters particularly suitable for battery operated products, 200 mA output current in which the major concern is overall system efficiency. It works in pulse skipping mode during 4.6 V fixed positive output voltages low load conditions and PWM-MODE at 1.5 MHz Programmable negative voltage by S from WIRE frequency for medium/high load conditions. The - 2.4 V to - 5.4 V high frequency allows the value and size of Typical efficiency: 85% external components to be reduced. The Enable pin allows the device to be turned off, therefore Pulse skipping mode in light load condition reducing the current consumption to less than 1.5 MHz PWM mode control switching 1 A. The negative output voltage can be frequency programmed by an MCU through a dedicated pin Enable pin for shutdown mode which implements single-wire protocol. Soft-start with controlled inrush current limit and thermal Low quiescent current: < 1 A in shutdown shutdown are integrated functions of the device. mode Soft-start with inrush current protection Overtemperature protection Temperature range: - 40 C to 85 C True-shutdown mode Table 1. Device summary Order code Positive voltage Negative voltage Package Packaging STOD03ATPUR 4.6V -2.4V to -5.4V DFN12L (3 x 3mm) 3000 parts per reel June 2013 DocID17785 Rev 3 1/22 This is information on a product in full production. www.st.comContents STOD03A Contents 1 Schematic . 3 2 Pin configuration 5 3 Maximum ratings 6 4 Electrical characteristics . 7 5 Typical performance characteristics . 10 6 Detailed description 12 6.1 S 12 WIRE 6.1.1 S features and benefits . 12 WIRE 6.1.2 S protocol 12 WIRE 6.1.3 S basic operations . 12 WIRE 6.2 Negative output voltage levels . 13 7 Application information . 14 7.1 External passive components . 14 7.1.1 Inductor selection 14 7.1.2 Input and output capacitor selection . 14 7.2 Recommended PCB layout . 15 7.3 General description . 16 7.3.1 Multiple operation modes 16 7.3.2 Enable pin . 16 7.3.3 Soft-start and inrush current limiting . 17 7.3.4 Undervoltage lockout . 17 7.3.5 Overtemperature protection 17 7.3.6 Fast discharge 17 8 Package mechanical data 18 9 Revision history . 21 2/22 DocID17785 Rev 3