ZXRD1000

ZXRD1000 SERIES HIGH EFFICIENCY SIMPLESYNC PWM DC-DC CONTROLLERS DESCRIPTION The ZXRD1000 series provides complete control and protection functions for a high efficiency (> 95%) DC-DC converter solution. The choice of external MOSFETs allow the designer to size devices according to application. The ZXRD1000 series uses advanced DC-DC converter techniques to provide synchronous drive capability, using innovative circuits that allow easy and cost effective implementation of shoot through protection. The FEATURES > 95% Efficiency Fixed frequency (adjustable) PWM Voltage mode to ensure excellent stability & transient response Low quiescent current in shutdown mode,15µA Low battery flag Output down to 2.0V Overload protection Demonstration boards available Synchronous or non-synchronous operation Cost effective solution N or P channel MOSFETs QSOP16 package ZXRD1000 series can be used with an all N channel topology or a combination N & P channel topology. Additional functionality includes shutdown control, a user adjustable low battery flag and simple adjustment of the fixed PWM switching frequency. The controller is available with fixed outputs of 5V or 3.3V and an adjustable (2.0 to 12V) output. Fixed 3.3, 5V and adjustable outputs Programmable soft start APPLICATIONS High efficiency 5 to 3.3V converters up to 4A Sub-notebook computers Embedded processor power supply Distributed power supply Portable instruments Local on card conver...