RT9259
RT9259 is 12V Synchronous Buck PWM DC-DC and Linear Power Controller manufactured by Richtek.
Description
The RT9259 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 built-in 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 VQFN-16L 4x4, SOP14 and SSOP-16 packages.
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-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-MOSFET Pass Transistor Fully-Adjustable Outputs Under Voltage Protection for Both Outputs Over Current Fault Monitor on MOSFET; No Current Sense Resistor is Required. Ro HS pliant and 100% Lead (Pb)-Free z z z z z z z z z z
Ordering Information
RT9259 Package Type S : SOP-14 A : SSOP-16 QV : VQFN-16 4x4 (V-Type)
Operating Temperature Range P : Pb Free with mercial Standard G : Green (Halogen Free with mercial Standard)
Note : Richtek 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....
