View max668ev datasheet:

19-4778; Rev 0a; 8/98 MAX668 Evaluation Kit General Description Features The MAX668 evaluation kit (EV kit) combines a con- ¦ +3V to V Input Range (as shipped) OUT stant-frequency, pulse-width-modulation (PWM) step- ¦ +12V or Adjustable Output Voltage up controller with an external N-channel MOSFET and ¦ Output Current Up to 1A Schottky diode to provide a regulated output voltage. The EV kit accepts a +3V to V input and converts it OUT ¦ N-Channel External MOSFET to a +12V output for currents up to 1A, with greater than ¦ 4µA IC Shutdown Current 90% conversion efficiency. The EV kit operates at 500kHz, allowing the use of small external components. ¦ 500kHz Switching Frequency The MAX668 EV kit is a fully assembled and tested sur- ¦ Surface-Mount Components face-mount cir