National’s LM4510 is a synchronous high-voltage boost regulator that supports OLED displays which are much thinner and consume less energy than liquid crystal displays (LCDs). The LM4510 features up to 85 percent efficiency for longer battery life and is offered in a small LLP® package.
Technical Features of National’s LM4510 OLED Display Power Supply
National’s LM4510 is a current-mode, step-up DC-DC converter with a 1.2A internal NMOS switch designed to deliver up to 80 mA at 18V from a Li-Ion battery. The synchronous operation at heavy loads and non-synchronous operation at light loads allow it to achieve up to 85 percent efficiency for longer battery life in power-constrained applications. Moreover, the true shutdown isolation feature eliminates leakage current paths to ground in stand-by mode. The device reduces the total solution size and cost through elimination of an external Schottky diode and from a 3.2V input, delivering a current range from 18V to 5V. The system designer can optimize line and load transient responses using the external compensation network in a broad range of applications, such as USB power supply or OLED display bias. Finally, the LM4510 offers a very robust solution due to the feedback fault and short-circuit protection feature on the output. The LM4510 is available in a 10-pin thermally enhanced LLP® package.
