LV5781

Ordering number : ENA0663A LV5781 Bi-CMOS IC 3A, Point-of-load, Chopper-type Step-down Converter http://onsemi.com Overview The LV5781 is a 1-channel chopper-type (low-side Schottky diode) step-down switching regulator. It incorporates an 80mΩ (typical) power MOSFET to achieve high-efficiency operation for 3A output currents. The output voltage is set internally to 3.3V. By adding two external resistors, it is possible to set the voltage to any desired setting above 0.85V. Inrush current at startup can be prevented by the soft start function. Using the ON/OFF pins, the converter can be set to standby mode in which the current consumption is 10μA or less. Both the load and the IC are protected by means of the overcurrent and thermal protection functions. The converter uses the HSSOP14 miniature package. Functions 3A, 1-channel chopper-type, step-down switching regulator Output voltage: 3.3V Setting of any output voltage enabled (external resistors required) High efficiency: 90% at IOUT=1A, VO=3.3V Miniature package: HSSOP14 Soft start function Standby mode Overcurrent protection Thermal shutdown Fixed frequency: 180kHz Applications LCD TVs Game machines Semiconductor Components Industries, LLC, 2013 August, 2013 13107 MS IM 20070112-S00004 No.A0663-1/7 LV5781 Specifications Absolute Maximum Ratings at Ta=25°C Parameter Symbol Conditions Ratings Unit Maximum input voltage Maximum CBOOT pin voltage VIN max VBT max 6.5 V 13 V Maximum SW pin...