APW7165

APW7165 5V to 12V Synchronous Buck Controller Features Wide Operation Supply Voltage from 5V to 12V Power-On-Reset Monitoring on VCC Excellent Reference Voltage Regulations - 0.8V Internal Reference - ±1% Over Temperature Range General Description The APW7165 is a voltage mode, fixed 300kHz-switching frequency, and synchronous buck controller. The APW7165 allows wide input voltage that is either a single 5~12V or two supply voltages for various applications. A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent wrong logic controls. A built-in digital soft-start circuit prevents the output voltages from overshoot as well as limits the input current. An internal 0.8V temperature-compensated reference voltage with high accuracy is designed to meet the requirement of low output voltage applications. The AP W7165 provides excellent output voltage regulations against load current variation. The controller’ s over-current protection monitors the output current by using the voltage drop across the RDS(ON) of low-side MOSFET, eliminating the need for a current sensing resistor that features high efficiency and low cost. The AP W7165 also integrates over-voltage protection (OVP) and under-voltage protection circuit which monitors the FB voltage to prevent the PWM output from over and under voltage. The APW7165 is available in a simple SOP-8 package. Integrated Soft-Start Automatic PSM/PWM Modes Voltage Mode PWM Operation with 90% (Max.) ...