RT7270

Design Sample & Tools Buy ® RT7270 3A, 18V, 340kHz Synchronous Step-Down Converter General Description The RT7270 is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 18V input supply. The RT7270's current mode architecture and external compensation allow the transient response to be optimized over a wide input voltage range and loads. Cycle-by-cycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start-up. The RT7270 also provides under voltage protection and thermal shutdown protection. The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT7270 is available in an SOP-8 (Exposed Pad) package. Ordering Information RT7270 Package Type SP : SOP-8 (Exposed Pad-Option 2) Lead Plating System Z : ECO (Ecological Element with Halogen Free and Pb free) H : UVP Hiccup N : UVP Disabled 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. Marking Information RT7270xZSP : Product Number RT7270x ZSPYMDNN x : H or N YMDNN : Date Code Features  ±1.5% High Accuracy Reference Voltage  4.5V to 18V Input Voltage Range  3A Output Current  Integrated N-MOSFET Switches  Current Mode Control  Fixed Frequency Operation : 340kHz  Output Adjustable f...