1.25MHz工作频率,升压转换器,DC-DC转换控制器升压PT1305

uDO嘉泰姆

GENERAL DESCRIPTION
uDO嘉泰姆

The PT1305 is a step - up DC/DC converter designed for driving up output voltage to 3 4V from a single cell Lithium Ion battery. The PT1305 switches at 1.25MHz, allowing the use of tiny, low cost and low height inductors and capacitors. A constant frequency internally compensated current mode PWM architecture results in low, predictable output noise that is easy to filter. Low ESR ceramic capacitors can be used at the outpu t, further reducing noise to mill i volt level. The high voltage switc h on the PT1305 is rated at 3 6V. It can generate 18V at 30mA from 3.6V supply. The PT1305 is available in SOT23 - 5 package . F EATURES  18V at 30mA from 3.6V  Up to 90 % Efficiency  1.2 5 MHz Fixed Switching Frequency  High output voltage up to 3 4V  Uses small surfa ce mount components  Low shutdown current < 1 μ A  SOT23 - 5 Package  RoHS compliant A PPLICATIONS  TFT - LCD Bias Supplies  OLED Bias Supply  Local 12V or 18V Supplies  C ordless phones  Digital Cameras    
uDO嘉泰姆