APW7166

APW7166 5V to 12V Single Synchronous Buck PWM and Linear Controller Features Provides Two Regulated Voltages - Synchronous Buck Converter - Linear Controller Wide 5V to 12V Supply Voltage Excellent Output Voltage Regulations - 0.8V Internal Reference General Description The APW7166 integrates a synchronous buck PWM and linear controller, as well as monitoring and protection functions into a single package. The APW7166 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 0.8V temperature-compensated reference voltage with high accuracy is designed to meet the requirement of low output voltage applications. The APW7166 provides excellent output voltage regulations against load current variation. An adjustable oscillator with frequency range from 150kHz to 600kHz provides more flexibility in choosing external components that balance cost and efficiency. The PWM 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 APW7166 also integrates an Over-Voltage Protection (OVP) circuit which monitors the FB voltage to prevent the PWM ...