RT9259A Datasheet | Richtek

Description The RT9259A is a dual-channel DC/DC controller specifically designed to deliver high quality power where 12V power source is available. This part consists of a synchronous buck controller and an LDO controller. The synchronous buck controller integrates MOSFET drivers that support 12V+12V bootstrapped voltage for high efficiency power conversion. The bootstrap diode is builtin to simplify the circuit design and minimize external part count. The LDO controller drives an external N-MOSFET for lower power requirement. Other features include adjustable operation frequency, internal soft start, under voltage protection, over current protection and shut down function. With the above functions, this part provides customers a pact, high efficiency, well-protected and cost-effective solution. This part es to SOP-14 package. Features z z Single 12V Bias Supply Support Dual Channel Power Conversion `One Synchronous Rectified Buck PWM Controller `One Linear Controller Both Controllers Drive Low Cost N-Channel MOSFETs Adjustable Frequency from 150k Hz to 1MHz and Free-Run Frequency at 230k Hz Small External ponent Count Output Voltage Regulation `PWM Controller : ±1% Accuracy `LDO Controller : ±2% Accuracy Two Internal VREF Power Support Lower to 0.8V Adjustable External pensation Linear Controller Drives N-Channel MOSFET Pass Transistor Fully-Adjustable Outputs Under Voltage Protection for Both Outputs Adjustable Over Current Protection Ro HS pliant and 100% Lead (Pb)-Free z z z z z z z z Ordering Information RT9259A Package Type S : SOP-14 Operating Temperature Range P : Pb Free with mercial Standard G : Green (Halogen Free with mercial Standard) z z z Applications z z z Note : Rich Tek Pb-free and Green products are : `Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020. `Suitable for use in Sn Pb or Pb-free soldering processes. `100% matte tin (Sn) plating. z z z Graphic Card GPU, Memory Core Power Graphic Card Interface Power...