LM4510

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM4510 SNVS533D – SEPTEMBER 2007 – REVISED NOVEMBER 2014 LM4510 Synchronous Step-Up DC/DC Converter with True Shutdown Isolation 1 Features 1 18 V@ 80 mA from 3.2 V Input 5 V @ 280 mA from 3.2 V Input No External Schottky Diode Required 85% Peak Efficiency Soft Start True Shutdown Isolation Stable with Small Ceramic or Tantalum Output Capacitors Output Short-Circuit Protection Feedback Fault Protection Input Undervoltage Lock Out Thermal Shutdown 0.002-µA Shutdown Current Wide Input Voltage Range: 2.7 V to 5.5 V 1-MHz Fixed Frequency Operation Low-profile 10-pin WSON Package (3 mm x 3 mm x 0.8 mm) 2 Applications Organic LED Panel Power Supply Charging Holster White LED Backlight USB Power Supply Class D Audio Amplifier Camera Flash LED Driver 3 Description The LM4510 is a current mode step-up DC/DC converter with a 1.2-A internal NMOS switch designed to deliver up to 120 mA at 16 V from a LiIon battery. The device's synchronous switching operation (no external Schottky diode) at heavy-load, and nonsynchronous switching operation at light-load, maximizes power efficiency. True shutdown function by synchronous FET and related circuitry ensures input and output isolation. A programmable soft-start circuit allows the user to limit the amount of inrush current during start-up. The output voltage can be adjusted by external resistors. The LM4510 featu...