APW7165C

APW7165C 5V to 12V Synchronous Buck Controller Features General Description Wide Operation Supply Voltage from 5V to 12V Power-On-Reset Monitoring on VCC Excellent Reference Voltage Regulations - 0.6V Internal Reference - ±1% Over Temperature Range Integrated Soft-Start Automatic PSM/PWM Modes Voltage Mode PWM Operation with 90% (Max.) Duty Cycle Under-Voltage Protection Adjustable Over-Current Protection Threshold - Sensing the RDS(ON) of Low-Side MOSFET Over-Voltage Protection Under-Voltage Protection Simple SOP-8P Package Lead Free and Green Devices Available (RoHS Compliant) Applications Graphic Cards DSL, Switch HUB Wireless Lan Notebook Computer Mother Board LCD Monitor/TV Pin Configuration The APW7165Cis a voltage mode, fixed 300kHz-switching frequency, and synchronous buck controller. The APW7165C allows wide input voltage that is either a single 5~12V or two supply voltage(s) for various applications. A power-on-reset (POR) circuit monitors the VCC supply voltage to prevent wrong logic controls. A builtin digital soft-start circuit prevents the output voltages from overshoot as well as limits the input current. An internal 0.6V temperature-compensated reference voltage with high accuracy is designed to meet the requirement of low output voltage applications. The APW7165C provides excellent output voltage regulations against load current variation. The controller’s over-current protection monitors the output current by using th...