RT7266

® RT7266 3A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter General Description The RT7266 is an adaptive on-time ACOT TM mode synchronous buck converter. The adaptive on-time ACOTTM mode control provides a very fast transient response with few external components. The low impedance internal MOSFET can support high efficiency operation with wide input voltage range from 4.5V to 18V . The proprietary circuit of the RT7266 enables to support all ceramic capacitors. The output voltage can be adjustable between 0.8V and 8V. The soft-start is adjustable by an external capacitor. Features z z z z z z z z z z z Ordering Information RT7266 Package Type SP : SOP-8 (Exposed Pad-Option 2) Lead Plating System Z : ECO (Ecological Element with Halogen Free and Pb free) Note : Richtek products are : RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. z z z z ACOTTM Mode Enables Fast Transient Response 4.5V to 18V Input Voltage Range 3A Output Current 60mΩ Internal Low Site N-MOSFET Adaptive On-Time Control Fast Transient Response Support All Ceramic Capacitors Up to 95% Efficiency 700kHz Switching Frequency Adjustable Output Voltage from 0.8V to 8V Adjustable Soft-Start Cycle-by-Cycle Current Limit Input Under Voltage Lockout Thermal Shutdown Protection RoHS Compliant and Halogen Free Applications z z z z z Industrial and Commercial Low Power Systems Computer Peripherals LCD Monitors and TVs ...